Release version 2.6.0

Improve Linux detection
__gnu_linux__ is not always present on all Linux platforms - add checking for __linux__ too.
2026-05-17 08:26:29 +03:00 · 2024-08-31 16:30:35 -07:00 · 2024-08-31 16:19:59 -07:00 · 2024-08-31 16:01:38 -07:00 · 2024-08-31 15:52:12 -07:00 · 2024-08-16 14:05:14 -07:00
8 changed files with 431 additions and 125 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,7 @@ uhubctl

 # Mac symbols
 *.dSYM
+
+# Patches
+*.patch
+*.diff
--- a/Formula/uhubctl.rb
+++ b/Formula/uhubctl.rb
@@ -2,8 +2,8 @@ class Uhubctl < Formula
  desc "USB hub per-port power control"
  homepage "https://github.com/mvp/uhubctl"
  head "https://github.com/mvp/uhubctl.git"
-  url "https://github.com/mvp/uhubctl/archive/v2.2.0.tar.gz"
-  sha256 "e5a722cb41967903bedbab4eea566ab332241a7f05fc7bc9c386b9a5e1762d8b"
+  url "https://github.com/mvp/uhubctl/archive/v2.5.0.tar.gz"
+  sha256 "d4452252f7862f7a45dd9c62f2ea7cd3a57ab5f5ab0e54a857d4c695699bbba3"
  license "GPL-2.0"

  depends_on "libusb"
--- a/2
+++ b/2
@@ -1,6 +1,6 @@
 uhubctl – USB hub per-port power control.

-Copyright (c) 2009-2020, Vadim Mikhailov
+Copyright (c) 2009-2024, Vadim Mikhailov

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
--- a/7
+++ b/7
@@ -10,6 +10,7 @@ INSTALL		:= install
 INSTALL_DIR	:= $(INSTALL) -m 755 -d
 INSTALL_PROGRAM	:= $(INSTALL) -m 755
 RM		:= rm -rf
+PKG_CONFIG	?= pkg-config

 CC ?= gcc
 CFLAGS ?= -g -O0
@@ -26,9 +27,9 @@ ifeq ($(UNAME_S),Linux)
 endif

 # Use pkg-config if available
-ifneq (,$(shell which pkg-config))
-	CFLAGS  += $(shell pkg-config --cflags libusb-1.0)
-	LDFLAGS += $(shell pkg-config --libs libusb-1.0)
+ifneq (,$(shell which $(PKG_CONFIG)))
+	CFLAGS  += $(shell $(PKG_CONFIG) --cflags libusb-1.0)
+	LDFLAGS += $(shell $(PKG_CONFIG) --libs libusb-1.0)
 else
 # But it should still build if pkg-config is not available (e.g. Linux or Mac homebrew)
 	LDFLAGS += -lusb-1.0
--- a/README.md
+++ b/README.md
@@ -18,66 +18,114 @@ This is list of known compatible USB hubs:

 | Manufacturer       | Product                                              | Ports | USB | VID:PID   | Release | EOL  |
 |:-------------------|:-----------------------------------------------------|:------|:----|:----------|:--------|:-----|
+| Acer               | BE270U monitor ([see](https://tinyurl.com/acer550))  | 4     | 3.0 |`2109:2811`| 2016    |      |
 | AmazonBasics       | HU3641V1 ([RPi issue](https://goo.gl/CLt46M))        | 4     | 3.0 |`2109:2811`| 2013    |      |
 | AmazonBasics       | HU3770V1 ([RPi issue](https://goo.gl/CLt46M))        | 7     | 3.0 |`2109:2811`| 2013    |      |
-| AmazonBasics       | HU9003V1EBL                                          | 7     | 3.1 |`2109:2817`| 2018    |      |
-| AmazonBasics       | HU9002V1SBL, HU9002V1ESL                             | 10    | 3.1 |`2109:2817`| 2018    |      |
+| AmazonBasics       | HU9003V1EBL, HUC9003V1EBL                            | 7     | 3.1 |`2109:2817`| 2018    |      |
+| AmazonBasics       | HU9002V1SBL, HU9002V1EBL, HU9002V1ESL ([note](https://bit.ly/3awM2Ei)) | 10    | 3.1 |`2109:2817`| 2018    |      |
 | AmazonBasics       | HUC9002V1SBL, HUC9002V1EBL, HUC9002V1ESL             | 10    | 3.1 |`2109:2817`| 2018    |      |
-| Anker              | AK-68ANHUB-BV7A-0004                                 | 7     | 3.0 |`2109:0812`| 2014    |      |
+| AmazonBasics       | U3-7HUB (only works for 1 charge port)               | 7     | 3.0 |`2109:2813`| 2020    |      |
+| Anker              | AK-68ANHUB-BV7A-0004 ([note](https://git.io/JLnZb))  | 7     | 3.0 |`2109:0812`| 2014    |      |
+| Apple              | Pro Display XDR MWPE2LL/A (internal USB hub)         | 4     | 2.0 |`05AC:9139`| 2019    |      |
 | Apple              | Thunderbolt Display 27" (internal USB hub)           | 6     | 2.0 |           | 2011    | 2016 |
 | Apple              | USB Keyboard With Numeric Pad (internal USB hub)     | 3     | 2.0 |           | 2011    |      |
+| Asus               | Z77 Sabertooth Motherboard (onboard USB hub)         | 6     | 2.0 |           | 2012    |      |
 | Asus               | Z87-PLUS Motherboard (onboard USB hub)               | 4     | 3.0 |           | 2013    | 2016 |
+| Aukey              | CB-C59                                               | 4     | 3.0 |`2109:2813`| 2017    |      |
 | B+B SmartWorx      | UHR204                                               | 4     | 2.0 |`0856:DB00`| 2013    |      |
-| B+B SmartWorx      | USH304                                               | 4     | 3.0 |`04B4:6506`| 2017    |      |
+| B+B SmartWorx      | USH304                                               | 4     | 3.0 |`04B4:6506`| 2017    | 2019 |
 | Basler             | 2000036234                                           | 4     | 3.0 |`0451:8046`| 2016    |      |
 | Belkin             | F5U101                                               | 4     | 2.0 |`0451:2046`| 2005    | 2010 |
+| Belkin             | F5U238UKCRL-MOB                                      | 4     | 2.0 |`0409:0059`| 2004    | 2010 |
+| BenQ               | PD2700U 4K Monitor (works only in USB2 mode)         | 4     | 3.0 |`05E3:0610`| 2018    |      |
+| BenQ               | PD3220U                                              | 4     | 3.1 |`05E3:0610`| 2019    |      |
 | Buffalo            | BSH4A05U3BK                                          | 4     | 3.0 |`05E3:0610`| 2015    |      |
-| Bytecc             | BT-UH340                                             | 4     | 3.0 |`2109:8110`| 2010    |      |
+| Bytecc             | BT-UH340 ([warning](https://bit.ly/35BNi5U))         | 4     | 3.0 |`2109:8110`| 2010    |      |
+| Centech            | CT-USB4HUB ReTRY HUB                                 | 4     | 3.0 |`0424:2744`| 2017    |      |
 | Circuitco          | Beagleboard-xM (internal USB hub)                    | 4     | 2.0 |`0424:9514`| 2010    |      |
 | Club3D             | CSV-3242HD Dual Display Docking Station              | 4     | 3.0 |`2109:2811`| 2015    |      |
-| CyberPower         | CP-H420P                                             | 4     | 2.0 |`0409:0059`| 2004    |      |
-| Cypress            | CY4608 HX2VL development kit                         | 4     | 2.0 |`04B4:6570`| 2012    |      |
-| D-Link             | DUB-H4 rev B (silver)                                | 4     | 2.0 |`05E3:0605`| 2005    | 2010 |
+| Coolgear           | USBG-12U2ML                                          | 12    | 2.0 |`05e3:0607`| 2015    |      |
+| Cypress            | CY4608 HX2VL devkit ([note](https://bit.ly/3sMPfpu)) | 4     | 2.0 |`04B4:6570`| 2012    |      |
 | D-Link             | DUB-H4 rev D,E (black). Note: rev A,C,F not supported| 4     | 2.0 |`05E3:0608`| 2012    |      |
 | D-Link             | DUB-H7 rev A (silver)                                | 7     | 2.0 |`2001:F103`| 2005    | 2010 |
-| D-Link             | DUB-H7 rev D,E (black). Note: rev B,C,F not supported| 7     | 2.0 |`05E3:0608`| 2012    |      |
+| D-Link             | DUB-H7 rev D,E (black). Rev B,C,F,G not supported    | 7     | 2.0 |`05E3:0608`| 2012    |      |
 | Dell               | P2416D 24" QHD Monitor ([note](https://git.io/JUAu8))| 4     | 2.0 |           | 2017    |      |
-| Dell               | S2719DGF 27" WQHD Gaming-Monitor                     | 5     | 3.1 |`0424:5734`| 2018    |      |
+| Dell               | S2719DGF 27" WQHD Gaming-Monitor                     | 5     | 3.0 |`0424:5734`| 2018    |      |
 | Dell               | UltraSharp 1704FPT 17" LCD Monitor                   | 4     | 2.0 |`0424:A700`| 2005    | 2015 |
 | Dell               | UltraSharp U2415 24" LCD Monitor                     | 5     | 3.0 |           | 2014    |      |
+| Dell               | UltraSharp U3419W 34" Curved Monitor                 | 6     | 3.0 |           | 2020    |      |
+| Dell               | Wyse 3040 ([-f required](https://tinyurl.com/wyse3k))| 6     | 3.0 |           | 2017    |      |
+| Delock             | 62537                                                | 4     | 3.0 |           | 2017    | 2021 |
+| Delock             | 87445 ([note](https://git.io/Jsuz5))                 | 4     | 2.0 |`05E3:0608`| 2009    | 2013 |
 | Elecom             | U2H-G4S                                              | 4     | 2.0 |           | 2006    | 2011 |
+| Gigabyte           | G27Q monitor ([see](http://tinyurl.com/G27Q551)      | 4     | 3.0 |`2109:0817`| 2020    |      |
 | GlobalScale        | ESPRESSObin SBUD102 V5                               | 1     | 3.0 |`1D6B:0003`| 2017    |      |
+| Hardkernel         | ODROID-C4 ([note](https://git.io/JG0mP))             | 4     | 3.0 |           | 2020    |      |
 | Hawking Technology | UH214                                                | 4     | 2.0 |           | 2003    | 2008 |
+| Hewlett Packard    | USB-C Dock G5 5TW10AA                                | 5     | 3.0 |`03F0:076B`| 2019    |      |
+| Hewlett Packard    | P5Q58UT                                              | 3     | 3.0 |           | 2019    |      |
+| Inateck            | HB2025A ([USB2 only](https://bit.ly/3wXF5UO))        | 4     | 3.1 |`2109:2822`| 2021    |      |
 | IOI                | U3H415E1                                             | 4     | 3.0 |           | 2012    |      |
-| j5create           | JUH470 (works only in USB2 mode)                     | 3     | 3.0 |`05E3:0610`| 2014    |      |
+| j5create           | JUH377 ([note](https://bit.ly/3Mx9eQI))              | 7     | 3.0 |           | 2016    |      |
+| j5create           | JUH470 ([note](https://bit.ly/3CRWamP))              | 3     | 3.0 |`05E3:0610`| 2014    |      |
 | Juiced Systems     | 6HUB-01                                              | 7     | 3.0 |`0BDA:0411`| 2014    | 2018 |
+| KUNBUS GmbH        | RevPi Connect (+) / S / SE                           | 2     | 2.0 |`0424:9514`| 2018    |      |
+| KUNBUS GmbH        | RevPi Connect 4                                      | 2     | 3.0 |           | 2022    |      |
+| KUNBUS GmbH        | RevPi Core 3 / S / SE                                | 2     | 2.0 |`0424:9514`| 2017    |      |
+| LG Electronics     | 27MD5KL-B monitor                                    | 4     | 3.0 |`043E:9A60`| 2019    |      |
+| LG Electronics     | 27GL850-B monitor                                    | 4     | 3.0 |`0451:8142`| 2019    |      |
+| LG Electronics     | 27UK850-W monitor                                    | 2     | 3.0 |           | 2018    |      |
+| LG Electronics     | 27UN83A-W monitor                                    | 2     | 3.0 |`0451:8142`| 2020    |      |
 | LG Electronics     | 38WK95C-W monitor                                    | 4     | 3.0 |`0451:8142`| 2018    |      |
 | Lenovo             | ThinkPad Ultra Docking Station (40A20090EU)          | 6     | 2.0 |`17EF:100F`| 2015    |      |
 | Lenovo             | ThinkPad Ultra Docking Station (40AJ0135EU)          | 7     | 3.1 |`17EF:3070`| 2018    |      |
 | Lenovo             | ThinkPad X200 Ultrabase 42X4963                      | 3     | 2.0 |`17EF:1005`| 2008    | 2011 |
 | Lenovo             | ThinkPad X6 Ultrabase 42W3107                        | 4     | 2.0 |`17EF:1000`| 2006    | 2009 |
+| Lenovo             | ThinkPlus 4-in-1 USB-C hub 4X90W86497                | 3     | 3.0 |           | 2021    |      |
+| Lenovo             | ThinkVision T24i-10 Monitor                          | 4     | 2.0 |`17EF:0610`| 2018    |      |
+| Lenovo             | USB-C to 4 Port USB-A Hub                            | 4     | 2.0 |`17EF:103A`| 2020    |      |
 | Lindy              | USB serial converter 4 port                          | 4     | 1.1 |`058F:9254`| 2008    |      |
-| Linksys            | USB2HUB4                                             | 4     | 2.0 |           | 2004    | 2010 |
+| Linksys            | USB2HUB4 ([note](https://git.io/JYiDZ))              | 4     | 2.0 |           | 2004    | 2010 |
 | Maplin             | A08CQ                                                | 7     | 2.0 |`0409:0059`| 2008    | 2011 |
+| Metadot            | Das Keyboard 4                                       | 2     | 3.0 |           | 2014    |      |
+| Microchip          | EVB9512                                              | 2     | 2.0 |           | 2009    |      |
 | Microchip          | EVB-USB2517                                          | 7     | 2.0 |           | 2008    |      |
 | Microchip          | EVB-USB2534BC                                        | 4     | 2.0 |           | 2013    |      |
+| Microchip          | EVB-USB5807                                          | 7     | 3.0 |           | 2016    |      |
 | Moxa               | Uport-407                                            | 7     | 2.0 |`110A:0407`| 2009    |      |
 | NVidia             | Jetson Nano B01 ([details](https://git.io/JJaFR))    | 4     | 3.0 |           | 2019    |      |
+| NVidia             | Jetson Xavier NX ([details](https://bit.ly/3PN2DDp)) | 4     | 3.0 |           | 2020    |      |
 | Phidgets           | HUB0003_0                                            | 7     | 2.0 |`1A40:0201`| 2017    |      |
+| Philips            | 346B1C UltraWide 34" Curved Monitor                  | 4     | 3.0 |`05E3:0610`| 2019    |      |
 | Plugable           | USB3-HUB7BC                                          | 7     | 3.0 |`2109:0813`| 2015    |      |
-| Plugable           | USB3-HUB7C                                           | 7     | 3.0 |`2109:0813`| 2015    |      |
-| Plugable           | USB3-HUB7-81X                                        | 7     | 3.0 |`2109:0813`| 2012    |      |
+| Plugable           | USB3-HUB7C (only works for 2 charge ports)           | 7     | 3.0 |`2109:0813`| 2015    |      |
+| Plugable           | USBC-HUB7BC (works for 6/7 ports, not the rightmost) | 7     | 3.0 |`2109:0817`| 2021    |      |
+| Plugable           | USB3-HUB10-C2 (only works for 2 charge ports)        | 10    | 3.0 |           | 2014    |      |
+| Port Inc           | NWUSB01                                              | 4     | 1.1 |`0451:1446`| 1999    | 2003 |
 | Raspberry Pi       | B+, 2B, 3B ([see below](#raspberry-pi-b2b3b))        | 4     | 2.0 |           | 2011    |      |
 | Raspberry Pi       | 3B+        ([see below](#raspberry-pi-3b))           | 4     | 2.0 |`0424:2514`| 2018    |      |
 | Raspberry Pi       | 4B         ([see below](#raspberry-pi-4b))           | 4     | 3.0 |`2109:3431`| 2019    |      |
+| Raspberry Pi       | 5          ([see below](#raspberry-pi-5))            | 4     | 3.0 |`1d6b:0002`| 2023    |      |
 | Renesas            | uPD720202 PCIe USB 3.0 host controller               | 2     | 3.0 |           | 2013    |      |
 | Rosewill           | RHUB-210                                             | 4     | 2.0 |`0409:005A`| 2011    | 2014 |
-| Rosonway           | RSH-A16 ([note](https://git.io/JTawg))               | 16    | 3.2 |`0bda:0411`| 2020    |      |
+| Rosonway           | RSH-518C ([note](https://bit.ly/3kYZUsA))            | 7     | 3.0 |`2109:0817`| 2021    |      |
+| Rosonway           | RSH-A10 ([see](https://tinyurl.com/2ppyyaj8))        | 10    | 3.0 |`0bda:0411`| 2020    |      |
+| Rosonway           | RSH-A13 ([warning](https://bit.ly/3OToUOL))          | 13    | 3.1 |`2109:2822`| 2021    |      |
+| Rosonway           | RSH-A16 ([note](https://git.io/JTawg), [warning](https://bit.ly/39B0tGS)) | 16    | 3.0 |`0bda:0411`| 2020    |      |
+| Rosonway           | RSH-A104 ([USB2 only](https://bit.ly/3A0qiKF))       | 4     | 3.1 |`2109:2822`| 2022    |      |
+| Rosonway           | RSH-A107 (aka ikuai A107-5)                          | 7     | 3.1 |`0bda:5411`| 2022    |      |
+| Rosonway           | RSH-ST07C ([only 4](https://tinyurl.com/4pjnujrn))   | 7     | 3.0 |`2109:2822`| 2023    |      |
 | Sanwa Supply       | USB-HUB14GPH                                         | 4     | 1.1 |           | 2001    | 2003 |
 | Seagate            | Backup Plus Hub STEL8000100                          | 2     | 3.0 |`0BC2:AB44`| 2016    |      |
+| Seeed Studio       | reTerminal CM4104032                                 | 2     | 2.0 |`0424:2514`| 2021    |      |
+| StarTech           | HB30A4AIB ([warning](https://tinyurl.com/ycxravwk))  | 4     | 3.0 |`2109:2817`| 2018    |      |
 | Sunix              | SHB4200MA                                            | 4     | 2.0 |`0409:0058`| 2006    | 2009 |
-| Targus             | PAUH212U                                             | 7     | 2.0 |           | 2004    | 2009 |
+| System Talks       | Sugoi USB2-HUB4X                                     | 4     | 2.0 |           | 2007    |      |
+| Targus             | PA095UZ                                              | 2     | 2.0 |           | 2004    |      |
+| Targus             | PAUH212/PAUH212U                                     | 7     | 2.0 |           | 2004    | 2009 |
 | Texas Instruments  | TUSB4041PAPEVM                                       | 4     | 2.1 |`0451:8142`| 2015    |      |
+| UUGear             | MEGA4 (for Raspberry Pi 4B)                          | 4     | 3.0 |`2109:0817`| 2021    |      |
+| VirtualHere        | USB3 4-port hub ([note](https://tinyurl.com/vhusb))  | 4     | 3.0 |           | 2024    |      |

 This table is by no means complete.
 If your hub works with `uhubctl`, but is not listed above, please report it
@@ -163,7 +211,7 @@ You can control the power on a USB port(s) like this:
    uhubctl -a off -p 2

 This means operate on default smart hub and turn power off (`-a off`, or `-a 0`)
-on port 2 (`-p 2`). Supported actions are `off`/`on`/`cycle` (or `0`/`1`/`2`).
+on port 2 (`-p 2`). Supported actions are `off`/`on`/`cycle`/`toggle` (or `0`/`1`/`2`/`3`).
 `cycle` means turn power off, wait some delay (configurable with `-d`) and turn it back on.
 Ports can be comma separated list, and may use `-` for ranges e.g. `2`, or `2,4`, or `2-5`, or `1-2,5-8`.

@@ -183,20 +231,35 @@ Linux USB permissions
 =====================

 On Linux, you should configure `udev` USB permissions (otherwise you will have to run it as root using `sudo uhubctl`).
-To fix USB permissions, first run `sudo uhubctl` and note all `vid:pid` for hubs you need to control.
-Then, add one or more udev rules like below to file `/etc/udev/rules.d/52-usb.rules` (replace 2001 with your vendor id):

-    SUBSYSTEM=="usb", ATTR{idVendor}=="2001", MODE="0666"
+Starting with Linux Kernel 6.0 there is a standard interface to turn USB hub ports on or off,
+and `uhubctl` will try to use it (instead of `libusb`) to set the port status.
+This is why there are additional rules for 6.0+ kernels.
+There is no harm in having these rules on systems running older kernel versions.
+
+To fix USB permissions, first run `sudo uhubctl` and note all `vid:pid` for hubs you need to control.
+Then, add udev rules like below to file `/etc/udev/rules.d/52-usb.rules`
+(replace `2001` with your hub vendor id, or completely remove `ATTR{idVendor}` filter to allow any USB hub access):
+
+    SUBSYSTEM=="usb", DRIVER=="usb", MODE="0666", ATTR{idVendor}=="2001"
+    # Linux 6.0 or later (its ok to have this block present for older Linux kernels):
+    SUBSYSTEM=="usb", DRIVER=="usb", \
+      RUN="/bin/sh -c \"chmod -f 666 $sys$devpath/*-port*/disable || true\""

 Note that for USB3 hubs, some hubs use different vendor ID for USB2 vs USB3 components of the same chip,
-and both need permissions to make uhubctl work properly. E.g. for Raspberry Pi 4B, you need to add these 2 lines:
+and both need permissions to make uhubctl work properly.
+E.g. for Raspberry Pi 4B, you need to add these 2 lines (or remove idVendor filter):

-    SUBSYSTEM=="usb", ATTR{idVendor}=="2109", MODE="0666"
-    SUBSYSTEM=="usb", ATTR{idVendor}=="1d6b", MODE="0666"
+    SUBSYSTEM=="usb", DRIVER=="usb", MODE="0666", ATTR{idVendor}=="2109"
+    SUBSYSTEM=="usb", DRIVER=="usb", MODE="0666", ATTR{idVendor}=="1d6b"

 If you don't like wide open mode `0666`, you can restrict access by group like this:

-    SUBSYSTEM=="usb", ATTR{idVendor}=="2001", MODE="0664", GROUP="dialout"
+    SUBSYSTEM=="usb", DRIVER=="usb", MODE="0664", GROUP="dialout"
+    # Linux 6.0 or later (its ok to have this block present for older Linux kernels):
+    SUBSYSTEM=="usb", DRIVER=="usb", \
+      RUN+="/bin/sh -c \"chown -f root:dialout $sys$devpath/*-port*/disable || true\"" \
+      RUN+="/bin/sh -c \"chmod -f 660 $sys$devpath/*-port*/disable || true\""

 and then add permitted users to `dialout` group:

@@ -206,6 +269,7 @@ For your `udev` rule changes to take effect, reboot or run:

    sudo udevadm trigger --attr-match=subsystem=usb

+For your convenience, ready to use udev rule is provided [here](https://github.com/mvp/uhubctl/blob/master/udev/rules.d/52-usb.rules).


 FAQ
@@ -255,6 +319,8 @@ Per-port power switching:
 3. If tests above were successful, please report your hub
   by opening new issue at https://github.com/mvp/uhubctl/issues,
   so we can add it to list of supported devices.
+   Please do not report unsupported hubs, unless it is different
+   hardware revision of some already listed supported model.


 #### _USB devices are not removed after port power down on Linux_
@@ -262,11 +328,10 @@ Per-port power switching:
 After powering down USB port, udev does not get any event, so it keeps the device files around.
 However, trying to access the device files will lead to an IO error.

-This is Linux kernel issue. It may be eventually fixed in kernel, see more discussion [here](https://bit.ly/2JzczjZ).
-Basically what happens here is that kernel USB driver knows about power off,
-but doesn't send notification about it to udev.
+This is Linux kernel [issue](https://bit.ly/2JzczjZ) and is [fixed](https://github.com/mvp/uhubctl/pull/450)
+since uhubctl 2.5.0 for systems with Linux kernel 6.0 or later.

-You can use this workaround for this issue:
+If you are still using Linux 5.x or older, you can use this workaround for this issue:

    sudo uhubctl -a off -l ${location} -p ${port}
    sudo udevadm trigger --action=remove /sys/bus/usb/devices/${location}.${port}/
@@ -279,9 +344,13 @@ When you turn power back on, device should re-enumerate properly (no need to cal

 Some device drivers in kernel are surprised by USB device being turned off and automatically try to power it back on.

-You can use option `-r N` where N is some number from 10 to 1000 to fix this -
+This is Linux kernel [issue](https://bit.ly/2JzczjZ) and is [fixed](https://github.com/mvp/uhubctl/pull/450)
+since uhubctl 2.5.0 for systems with Linux kernel 6.0 or later.
+
+If you are still using Linux 5.x or older:
+
+You can use option `-r N`, where N is some number from 10 to 1000 to fix this -
 `uhubctl` will try to turn power off many times in quick succession, and it should suppress that.
-This may be eventually fixed in kernel, see more discussion [here](https://bit.ly/2JzczjZ).

 Disabling USB authorization for device in question before turning power off with `uhubctl` should help:

@@ -306,7 +375,10 @@ Doing so will confuse internal hub circuitry and will cause unpredictable behavi

 #### _Raspberry Pi turns power off on all ports, not just the one I specified_

-This is limitation of Raspberry Pi hardware design.
+This is the limitation of Raspberry Pi hardware design.
+As a workaround, you can buy any external USB hub from supported list above,
+attach it to any USB port of Raspberry Pi, and control power on its ports independently.
+Also, there are supported hubs designed specifically for Raspberry Pi, e.g. UUGear MEGA4.

 For reference, supported Raspberry Pi models have following internal USB topology:

@@ -348,38 +420,70 @@ to make power switching work on RPi 4B.

  * USB2 hub `3`, 1 port, OTG controller. Power switching is [not supported](https://git.io/JUc5Q).

+##### Raspberry Pi 5

-As a workaround, you can buy any external USB hub from supported list,
-attach it to any USB port of Raspberry Pi, and control power on its ports independently.
+  Raspberry Pi 5 has two USB2 ports and two USB3 ports (total 4).
+These ports are connected to 4 distinct USB hubs `1`,`2`,`3`,`4` in really weird configuration.
+If USB3 device is connected to blue socket, it will be detected on USB3 hub `2` or `4`.
+If USB2 device is connected to any socket or USB3 device connected to black socket,
+it will be detected on USB2 hub `1` or `3`.
+Regardless of USB2/USB3 connection type, blue sockets are always port `1`,
+and black sockets are always port `2`.

+  Each of 4 USB onboard hubs advertises as supporting per-port power switching, but this is not true.
+In reality, Raspberry Pi 5 all 4 ports are ganged together in one group,
+despite belonging to 4 different logical USB hubs.

+To turn off VBUS power it has to be disabled across all onboard hubs and ports with:
+
+   ```
+   uhubctl -l 1 -a 0
+   uhubctl -l 3 -a 0
+   ```
+
+To turn it back on:
+
+   ```
+   uhubctl -l 1 -a 1
+   uhubctl -l 3 -a 1
+   ```
+
+Note that VBUS power goes down only if all ports are off -
+enabling any single port enables VBUS back for all 4 ports.

 Notable projects using uhubctl
 ==============================
-| Project                                                  | Description                                           |
-|:---------------------------------------------------------|:------------------------------------------------------|
-| [Morse code USB light](https://git.io/fj1F4)             | Flash a message in Morse code with USB light          |
-| [Webcam USB light](https://git.io/fj1FB)                 | Turn on/off LED when webcam is turned on/off          |
-| [Cinema Lightbox](https://goo.gl/fjCvkz)                 | Turn on/off Cinema Lightbox from iOS Home app         |
-| [Build Status Light](https://goo.gl/3GA82o)              | Create a build status light in under 10 minutes       |
-| [Buildenlights](https://git.io/fj1FC)                    | GitLab/GitHub project build status as green/red light |
-| [Weather Station](https://goo.gl/3b1FzC)                 | Reset Weather Station when it freezes                 |
-| [sysmoQMOD](https://bit.ly/2VtWrVt)                      | Reset cellular modems when necessary                  |
-| [Smog Sensor](https://bit.ly/2EMwgCk)                    | Raspberry Pi based smog sensor power reset            |
-| [Terrible Cluster](https://goo.gl/XjiXFu)                | Power on/off Raspberry Pi cluster nodes as needed     |
-| [Ideal Music Server](https://bit.ly/39MeVFQ)             | Turn off unused USB ports to improve audio quality    |
-| [USB drives with no phantom load](https://goo.gl/qfrmGK) | Power USB drives only when needed to save power       |
-| [USB drive data recovery](https://goo.gl/4MddLr)         | Recover data from failing USB hard drive              |
-| [Control power to 3D printer](https://git.io/fh5Tr)      | OctoPrint web plugin for USB power control            |
-| [USB fan for Raspberry Pi](https://bit.ly/2TRV6sM)       | Control USB fan to avoid Raspberry Pi overheating     |
-| [Raspberry Pi Reboot Router](https://bit.ly/3aNbQqs)     | Automatically reboot router if internet isn't working |
-| [Control USB Lamp With Voice](https://bit.ly/2VtW2SX)    | Voice Control of USB Lamp using Siri and Raspberry Pi |
+| Project                                                  | Description                                             |
+|:---------------------------------------------------------|:--------------------------------------------------------|
+| [Morse code USB light](https://git.io/fj1F4)             | Flash a message in Morse code with USB light            |
+| [Webcam USB light](https://git.io/fj1FB)                 | Turn on/off LED when webcam is turned on/off            |
+| [Cinema Lightbox](https://goo.gl/fjCvkz)                 | Turn on/off Cinema Lightbox from iOS Home app           |
+| [Build Status Light](https://goo.gl/3GA82o)              | Create a build status light in under 10 minutes         |
+| [Buildenlights](https://git.io/fj1FC)                    | GitLab/GitHub project build status as green/red light   |
+| [Weather Station](https://goo.gl/3b1FzC)                 | Reset Weather Station when it freezes                   |
+| [sysmoQMOD](https://bit.ly/2VtWrVt)                      | Reset cellular modems when necessary                    |
+| [Smog Sensor](https://bit.ly/2EMwgCk)                    | Raspberry Pi based smog sensor power reset              |
+| [Terrible Cluster](https://goo.gl/XjiXFu)                | Power on/off Raspberry Pi cluster nodes as needed       |
+| [Ideal Music Server](https://bit.ly/39MeVFQ)             | Turn off unused USB ports to improve audio quality      |
+| [USB drives with no phantom load](https://goo.gl/qfrmGK) | Power USB drives only when needed to save power         |
+| [USB drive data recovery](https://goo.gl/4MddLr)         | Recover data from failing USB hard drive                |
+| [Control power to 3D printer](https://git.io/fh5Tr)      | OctoPrint web plugin for USB power control              |
+| [USB fan for Raspberry Pi](https://bit.ly/2TRV6sM)       | Control USB fan to avoid Raspberry Pi overheating       |
+| [Raspberry Pi Reboot Router](https://bit.ly/3aNbQqs)     | Automatically reboot router if internet isn't working   |
+| [Control USB Lamp With Voice](https://bit.ly/2VtW2SX)    | Voice Control of USB Lamp using Siri and Raspberry Pi   |
+| [Control USB LED Strip](https://bit.ly/3oVWfeZ)          | Controlling USB powered LED Light Strip                 |
+| [Brew beer with Raspberry Pi](https://git.io/JtbLd)      | Automated beer brewing system using Raspberry Pi        |
+| [Webcam On-Air Sign](https://bit.ly/3witNsa)             | Automatically light up a sign when webcam is in use     |
+| [Do it yourself PPPS](https://git.io/J3lHs)              | Solder wires in your USB hub to support uhubctl         |
+| [Open source PPPS hub](https://tinyurl.com/yckhystt)     | Open source hardware project for uhubctl compatible hub |
+| [Python Wrapper for uhubctl](https://github.com/nbuchwitz/python3-uhubctl) | Module to use uhubctl with Python     |
+| [labgrid](https://github.com/labgrid-project/labgrid)    | Framework for testing embedded Linux on hardware        |


 Copyright
 =========

-Copyright (C) 2009-2020 Vadim Mikhailov
+Copyright (C) 2009-2024 Vadim Mikhailov

 This file can be distributed under the terms and conditions of the
 GNU General Public License version 2.
--- a/2
+++ b/2
@@ -1 +1 @@
-2.3.0
+2.6.0
--- a/udev/rules.d/52-usb.rules
+++ b/udev/rules.d/52-usb.rules
@@ -0,0 +1,24 @@
+# uhubctl – USB hub per-port power control https://github.com/mvp/uhubctl
+#
+# Copyright (c) 2009-2024, Vadim Mikhailov
+#
+# This file can be distributed under the terms and conditions of the
+# GNU General Public License version 2.
+
+# uhubctl udev rules for rootless operation on Linux for users in group `dialout`.
+#
+# Copy this file to /etc/udev/rules.d, then reboot or run:
+#
+#   sudo udevadm trigger --attr-match=subsystem=usb
+#
+# To add yourself to this permission group, run:
+#
+#   sudo usermod -a -G dialout $USER
+
+# This is for Linux before 6.0:
+SUBSYSTEM=="usb", DRIVER=="usb", MODE="0664", GROUP="dialout"
+
+# This is for Linux 6.0 or later (ok to keep this block present for older Linux kernels):
+SUBSYSTEM=="usb", DRIVER=="usb", \
+  RUN+="/bin/sh -c \"chown -f root:dialout $sys$devpath/*-port*/disable || true\"" \
+  RUN+="/bin/sh -c \"chmod -f 660 $sys$devpath/*-port*/disable || true\""
--- a/uhubctl.c
+++ b/uhubctl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009-2020 Vadim Mikhailov
+ * Copyright (c) 2009-2024 Vadim Mikhailov
 *
 * Utility to turn USB port power on/off
 * for USB hubs that support per-port power switching.
@@ -29,7 +29,7 @@
 #include <unistd.h>
 #endif

-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(_WIN32)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(_WIN32)
 #include <libusb.h>
 #else
 #include <libusb-1.0/libusb.h>
@@ -47,6 +47,10 @@ int snprintf(char * __restrict __str, size_t __size, const char * __restrict __f
 #include <time.h>   /* for nanosleep */
 #endif

+#if defined(__gnu_linux__) || defined(__linux__)
+#include <fcntl.h> /* for open() / O_WRONLY */
+#endif
+
 /* cross-platform sleep function */

 void sleep_ms(int milliseconds)
@@ -75,6 +79,8 @@ void sleep_ms(int milliseconds)
 #define POWER_OFF                0
 #define POWER_ON                 1
 #define POWER_CYCLE              2
+#define POWER_TOGGLE             3
+#define POWER_FLASH              4

 #define MAX_HUB_CHAIN            8  /* Per USB 3.0 spec max hub chain is 7 */

@@ -220,6 +226,18 @@ static int opt_wait   = 20; /* wait before repeating in ms */
 static int opt_exact  = 0;  /* exact location match - disable USB3 duality handling */
 static int opt_reset  = 0;  /* reset hub after operation(s) */
 static int opt_force  = 0;  /* force operation even on unsupported hubs */
+static int opt_nodesc = 0;  /* skip querying device description */
+#if defined(__gnu_linux__) || defined(__linux__)
+static int opt_nosysfs = 0; /* don't use the Linux sysfs port disable interface, even if available */
+#endif
+
+
+static const char short_options[] =
+    "l:L:n:a:p:d:r:w:s:hvefRN"
+#if defined(__gnu_linux__) || defined(__linux__)
+    "S"
+#endif
+;

 static const struct option long_options[] = {
    { "location", required_argument, NULL, 'l' },
@@ -233,6 +251,10 @@ static const struct option long_options[] = {
    { "wait",     required_argument, NULL, 'w' },
    { "exact",    no_argument,       NULL, 'e' },
    { "force",    no_argument,       NULL, 'f' },
+    { "nodesc",   no_argument,       NULL, 'N' },
+#if defined(__gnu_linux__) || defined(__linux__)
+    { "nosysfs",  no_argument,       NULL, 'S' },
+#endif
    { "reset",    no_argument,       NULL, 'R' },
    { "version",  no_argument,       NULL, 'v' },
    { "help",     no_argument,       NULL, 'h' },
@@ -240,7 +262,7 @@ static const struct option long_options[] = {
 };


-static int print_usage()
+static int print_usage(void)
 {
    printf(
        "uhubctl: utility to control USB port power for smart hubs.\n"
@@ -248,16 +270,20 @@ static int print_usage()
        "Without options, show status for all smart hubs.\n"
        "\n"
        "Options [defaults in brackets]:\n"
-        "--action,   -a - action to off/on/cycle (0/1/2) for affected ports.\n"
+        "--action,   -a - action to off/on/cycle/toggle/flash (0/1/2/3/4) for affected ports.\n"
        "--ports,    -p - ports to operate on    [all hub ports].\n"
        "--location, -l - limit hub by location  [all smart hubs].\n"
        "--level     -L - limit hub by location level (e.g. a-b.c is level 3).\n"
        "--vendor,   -n - limit hub by vendor id [%s] (partial ok).\n"
        "--search,   -s - limit hub by attached device description.\n"
-        "--delay,    -d - delay for cycle action [%g sec].\n"
+        "--delay,    -d - delay for cycle/flash action [%g sec].\n"
        "--repeat,   -r - repeat power off count [%d] (some devices need it to turn off).\n"
        "--exact,    -e - exact location (no USB3 duality handling).\n"
        "--force,    -f - force operation even on unsupported hubs.\n"
+        "--nodesc,   -N - do not query device description (helpful for unresponsive devices).\n"
+#if defined(__gnu_linux__) || defined(__linux__)
+        "--nosysfs,  -S - do not use the Linux sysfs port disable interface.\n"
+#endif
        "--reset,    -R - reset hub after each power-on action, causing all devices to reassociate.\n"
        "--wait,     -w - wait before repeat power off [%d ms].\n"
        "--version,  -v - print program version.\n"
@@ -379,7 +405,7 @@ static int get_hub_info(struct libusb_device *dev, struct hub_info *info)
        return rc;
    if (desc.bDeviceClass != LIBUSB_CLASS_HUB)
        return LIBUSB_ERROR_INVALID_PARAM;
-    int bcd_usb = libusb_le16_to_cpu(desc.bcdUSB);
+    int bcd_usb = desc.bcdUSB;
    int desc_type = bcd_usb >= USB_SS_BCD ? LIBUSB_DT_SUPERSPEED_HUB
                                          : LIBUSB_DT_HUB;
    rc = libusb_open(dev, &devh);
@@ -402,8 +428,8 @@ static int get_hub_info(struct libusb_device *dev, struct hub_info *info)
            snprintf(
                info->vendor, sizeof(info->vendor),
                "%04x:%04x",
-                libusb_le16_to_cpu(desc.idVendor),
-                libusb_le16_to_cpu(desc.idProduct)
+                desc.idVendor,
+                desc.idProduct
            );

            /* Convert bus and ports array into USB location string */
@@ -465,6 +491,32 @@ static int get_hub_info(struct libusb_device *dev, struct hub_info *info)
                lpsm = HUB_CHAR_INDV_PORT_LPSM;
            }
            info->lpsm = lpsm;
+
+            /* Raspberry Pi 5 hack */
+
+            /* TODO: make this hack more reliable by querying Raspberry Pi model */
+
+            if (strlen(info->container_id)==0 &&
+                info->lpsm==HUB_CHAR_INDV_PORT_LPSM &&
+                info->pn_len==0)
+            {
+                /* USB2 */
+                if (strcasecmp(info->vendor, "1d6b:0002")==0 &&
+                    info->nports==2 &&
+                    !info->super_speed &&
+                    (info->bus==1 || info->bus==3))
+                {
+                    strcpy(info->container_id, "Raspberry Pi 5 Fake Container Id");
+                }
+                /* USB3 */
+                if (strcasecmp(info->vendor, "1d6b:0003")==0 &&
+                    info->nports==1 &&
+                    info->super_speed &&
+                    (info->bus==2 || info->bus==4))
+                {
+                    strcpy(info->container_id, "Raspberry Pi 5 Fake Container Id");
+                }
+            }
            rc = 0;
        } else {
            rc = len;
@@ -499,7 +551,121 @@ static int get_port_status(struct libusb_device_handle *devh, int port)
    if (rc < 0) {
        return rc;
    }
-    return ust.wPortStatus;
+    return libusb_le16_to_cpu(ust.wPortStatus);
+}
+
+
+#if defined(__gnu_linux__) || defined(__linux__)
+/*
+ * Try to use the Linux sysfs interface to power a port off/on.
+ * Returns 0 on success.
+ */
+
+static int set_port_status_linux(struct libusb_device_handle *devh, struct hub_info *hub, int port, int on)
+{
+    int configuration = 0;
+    char disable_path[PATH_MAX];
+
+    int rc = libusb_get_configuration(devh, &configuration);
+    if (rc < 0) {
+        return rc;
+    }
+
+    /*
+     * The "disable" sysfs interface is available only starting with kernel version 6.0.
+     * For earlier kernel versions the open() call will fail and we fall back to using libusb.
+     */
+    if (hub->pn_len == 0) {
+      snprintf(disable_path, PATH_MAX,
+          "/sys/bus/usb/devices/%s-0:%d.0/usb%s-port%i/disable",
+          hub->location, configuration, hub->location, port
+      );
+    } else {
+      snprintf(disable_path, PATH_MAX,
+          "/sys/bus/usb/devices/%s:%d.0/%s-port%i/disable",
+          hub->location, configuration, hub->location, port
+      );
+    }
+
+    int disable_fd = open(disable_path, O_WRONLY);
+    if (disable_fd >= 0) {
+        rc = write(disable_fd, on ? "0" : "1", 1);
+        close(disable_fd);
+    }
+
+    if (disable_fd < 0 || rc < 0) {
+        /*
+         * ENOENT is the expected error when running on Linux kernel < 6.0 where
+         * sysfs disable interface does not exist yet - no need to report anything in this case.
+         * If the file exists but another error occurs it is most likely a permission issue.
+         * Print an error message mostly geared towards setting up udev.
+         */
+        if (errno != ENOENT) {
+            fprintf(stderr,
+                "Failed to set port status by writing to %s (%s).\n"
+                "Follow https://git.io/JIB2Z to make sure that udev is set up correctly.\n"
+                "Falling back to libusb based port control.\n"
+                "Use -S to skip trying the sysfs interface and printing this message.\n",
+                disable_path, strerror(errno)
+            );
+        }
+
+        return -1;
+    }
+
+    return 0;
+}
+#endif
+
+
+/*
+ * Use a control transfer via libusb to turn a port off/on.
+ * Returns >= 0 on success.
+ */
+
+static int set_port_status_libusb(struct libusb_device_handle *devh, int port, int on)
+{
+    int rc = 0;
+    int request = on ? LIBUSB_REQUEST_SET_FEATURE
+                     : LIBUSB_REQUEST_CLEAR_FEATURE;
+    int repeat = on ? 1 : opt_repeat;
+
+    while (repeat-- > 0) {
+        rc = libusb_control_transfer(devh,
+            LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_OTHER,
+            request, USB_PORT_FEAT_POWER,
+            port, NULL, 0, USB_CTRL_GET_TIMEOUT
+        );
+        if (rc < 0) {
+            perror("Failed to control port power!\n");
+        }
+        if (repeat > 0) {
+            sleep_ms(opt_wait);
+        }
+    }
+
+    return rc;
+}
+
+
+/*
+ * Try different methods to power a port off/on.
+ * Return >= 0 on success.
+ */
+
+static int set_port_status(struct libusb_device_handle *devh, struct hub_info *hub, int port, int on)
+{
+#if defined(__gnu_linux__) || defined(__linux__)
+    if (!opt_nosysfs) {
+        if (set_port_status_linux(devh, hub, port, on) == 0) {
+            return 0;
+        }
+    }
+#else
+    (void)hub;
+#endif
+
+    return set_port_status_libusb(devh, port, on);
 }


@@ -530,27 +696,30 @@ static int get_device_description(struct libusb_device * dev, struct descriptor_
    if (rc)
        return rc;
    bzero(ds, sizeof(*ds));
-    id_vendor  = libusb_le16_to_cpu(desc.idVendor);
-    id_product = libusb_le16_to_cpu(desc.idProduct);
+    id_vendor  = desc.idVendor;
+    id_product = desc.idProduct;
    rc = libusb_open(dev, &devh);
    if (rc == 0) {
-        if (desc.iManufacturer) {
-            libusb_get_string_descriptor_ascii(devh,
-                desc.iManufacturer, (unsigned char*)ds->vendor, sizeof(ds->vendor));
-            rtrim(ds->vendor);
-        }
-        if (desc.iProduct) {
-            libusb_get_string_descriptor_ascii(devh,
-                desc.iProduct, (unsigned char*)ds->product, sizeof(ds->product));
-            rtrim(ds->product);
-        }
-        if (desc.iSerialNumber) {
-            libusb_get_string_descriptor_ascii(devh,
-                desc.iSerialNumber, (unsigned char*)ds->serial, sizeof(ds->serial));
-            rtrim(ds->serial);
+        if (!opt_nodesc) {
+            if (desc.iManufacturer) {
+                rc = libusb_get_string_descriptor_ascii(devh,
+                    desc.iManufacturer, (unsigned char*)ds->vendor, sizeof(ds->vendor));
+                rtrim(ds->vendor);
+            }
+            if (rc >= 0 && desc.iProduct) {
+                rc = libusb_get_string_descriptor_ascii(devh,
+                    desc.iProduct, (unsigned char*)ds->product, sizeof(ds->product));
+                rtrim(ds->product);
+            }
+            if (rc >= 0 && desc.iSerialNumber) {
+                rc = libusb_get_string_descriptor_ascii(devh,
+                    desc.iSerialNumber, (unsigned char*)ds->serial, sizeof(ds->serial));
+                rtrim(ds->serial);
+            }
        }
        if (desc.bDeviceClass == LIBUSB_CLASS_HUB) {
            struct hub_info info;
+            bzero(&info, sizeof(info));
            rc = get_hub_info(dev, &info);
            if (rc == 0) {
                const char * lpsm_type;
@@ -689,7 +858,7 @@ static int print_port_status(struct hub_info * hub, int portmask)
 *  In case of error returns negative error code.
 */

-static int usb_find_hubs()
+static int usb_find_hubs(void)
 {
    struct libusb_device *dev;
    int perm_ok = 1;
@@ -876,15 +1045,15 @@ static int usb_find_hubs()
            hub_phys_count++;
        }
    }
-#ifdef __gnu_linux__
-    if (perm_ok == 0 && geteuid() != 0) {
-        fprintf(stderr,
-            "There were permission problems while accessing USB.\n"
-            "Follow https://git.io/JIB2Z for a fix!\n"
-        );
-    }
-#endif
    if (perm_ok == 0 && hub_phys_count == 0) {
+#if defined(__gnu_linux__) || defined(__linux__)
+        if (geteuid() != 0) {
+            fprintf(stderr,
+                "There were permission problems while accessing USB.\n"
+                "Follow https://git.io/JIB2Z for a fix!\n"
+            );
+        }
+#endif
        return LIBUSB_ERROR_ACCESS;
    }
    return hub_phys_count;
@@ -898,8 +1067,7 @@ int main(int argc, char *argv[])
    int option_index = 0;

    for (;;) {
-        c = getopt_long(argc, argv, "l:L:n:a:p:d:r:w:s:hvefR",
-            long_options, &option_index);
+        c = getopt_long(argc, argv, short_options, long_options, &option_index);
        if (c == -1)
            break;  /* no more options left */
        switch (c) {
@@ -913,16 +1081,16 @@ int main(int argc, char *argv[])
            printf("\n");
            break;
        case 'l':
-            strncpy(opt_location, optarg, sizeof(opt_location));
+            snprintf(opt_location, sizeof(opt_location), "%s", optarg);
            break;
        case 'L':
            opt_level = atoi(optarg);
            break;
        case 'n':
-            strncpy(opt_vendor, optarg, sizeof(opt_vendor));
+            snprintf(opt_vendor, sizeof(opt_vendor), "%s", optarg);
            break;
        case 's':
-            strncpy(opt_search, optarg, sizeof(opt_search));
+            snprintf(opt_search, sizeof(opt_search), "%s", optarg);
            break;
        case 'p':
            if (!strcasecmp(optarg, "all")) { /* all ports is the default */
@@ -942,6 +1110,12 @@ int main(int argc, char *argv[])
            if (!strcasecmp(optarg, "cycle") || !strcasecmp(optarg, "2")) {
                opt_action = POWER_CYCLE;
            }
+            if (!strcasecmp(optarg, "toggle") || !strcasecmp(optarg, "3")) {
+                opt_action = POWER_TOGGLE;
+            }
+            if (!strcasecmp(optarg, "flash") || !strcasecmp(optarg, "4")) {
+                opt_action = POWER_FLASH;
+            }
            break;
        case 'd':
            opt_delay = atof(optarg);
@@ -952,6 +1126,14 @@ int main(int argc, char *argv[])
        case 'f':
            opt_force = 1;
            break;
+        case 'N':
+            opt_nodesc = 1;
+            break;
+#if defined(__gnu_linux__) || defined(__linux__)
+        case 'S':
+            opt_nosysfs = 1;
+            break;
+#endif
        case 'e':
            opt_exact = 1;
            break;
@@ -1029,6 +1211,9 @@ int main(int argc, char *argv[])
            continue;
        if (k == 1 && opt_action == POWER_KEEP)
            continue;
+        /* if toggle requested, do it only once when `k == 0` */
+        if (k == 1 && opt_action == POWER_TOGGLE)
+            continue;
        int i;
        for (i=0; i<hub_count; i++) {
            if (hubs[i].actionable == 0)
@@ -1045,44 +1230,32 @@ int main(int argc, char *argv[])
            if (rc == 0) {
                /* will operate on these ports */
                int ports = ((1 << hubs[i].nports) - 1) & opt_ports;
-                int request = (k == 0) ? LIBUSB_REQUEST_CLEAR_FEATURE
-                                       : LIBUSB_REQUEST_SET_FEATURE;
+                int should_be_on = k;
+                if (opt_action == POWER_FLASH) {
+                    should_be_on = !should_be_on;
+                }
+
                int port;
                for (port=1; port <= hubs[i].nports; port++) {
                    if ((1 << (port-1)) & ports) {
                        int port_status = get_port_status(devh, port);
                        int power_mask = hubs[i].super_speed ? USB_SS_PORT_STAT_POWER
                                                             : USB_PORT_STAT_POWER;
-                        if (k == 0 && !(port_status & power_mask))
-                            continue;
-                        if (k == 1 && (port_status & power_mask))
-                            continue;
-                        int repeat = 1;
-                        if (k == 0)
-                            repeat = opt_repeat;
-                        if (!(port_status & ~power_mask))
-                            repeat = 1;
-                        while (repeat-- > 0) {
-                            rc = libusb_control_transfer(devh,
-                                LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_OTHER,
-                                request, USB_PORT_FEAT_POWER,
-                                port, NULL, 0, USB_CTRL_GET_TIMEOUT
-                            );
-                            if (rc < 0) {
-                                perror("Failed to control port power!\n");
-                            }
-                            if (repeat > 0) {
-                                sleep_ms(opt_wait);
-                            }
+                        int is_on = (port_status & power_mask) != 0;
+
+                        if (opt_action == POWER_TOGGLE) {
+                            should_be_on = !is_on;
+                        }
+
+                        if (is_on != should_be_on) {
+                            rc = set_port_status(devh, &hubs[i], port, should_be_on);
                        }
                    }
                }
                /* USB3 hubs need extra delay to actually turn off: */
                if (k==0 && hubs[i].super_speed)
                    sleep_ms(150);
-                printf("Sent power %s request\n",
-                    request == LIBUSB_REQUEST_CLEAR_FEATURE ? "off" : "on"
-                );
+                printf("Sent power %s request\n", should_be_on ? "on" : "off");
                printf("New status for hub %s [%s]\n",
                    hubs[i].location, hubs[i].ds.description
                );
@@ -1100,7 +1273,7 @@ int main(int argc, char *argv[])
            }
            libusb_close(devh);
        }
-        if (k == 0 && opt_action == POWER_CYCLE)
+        if (k == 0 && (opt_action == POWER_CYCLE || opt_action == POWER_FLASH))
            sleep_ms((int)(opt_delay * 1000));
    }
    rc = 0;
@@ -1 +1 @@
 .3.0
 .6.0