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Add a note about USB authorization on Linux

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Vadim Mikhailov
2020-10-06 10:51:51 -07:00
parent 2a4df4ee6c
commit a7b5f6b362
1 changed files with 5 additions and 2 deletions
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README.md
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@@ -261,8 +261,11 @@ 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).
If your device is USB mass storage, invoking `udisksctl` before calling `uhubctl`
might help to mitigate this issue:
Disabling USB authorization for device in question before turning power off with `uhubctl` should help:
echo 0 > sudo tee /sys/bus/usb/devices/${location}.${port}/authorized
If your device is USB mass storage, invoking `udisksctl` before calling `uhubctl` should help too:
sudo udisksctl power-off --block-device /dev/disk/...`
sudo uhubctl -a off ...