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Old 10-30-2017, 11:09 AM   #11
Wunsz
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Join Date: Oct 2017
Posts: 11
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Quote:
Originally Posted by k001 View Post
This seems like a device wants to sleep, and the kernel can't prevent it and is losing it.
That actually gave me an idea. I've attached the dell dock to USB described as 2-2.1 and did:

Code:
echo on | sudo tee /sys/bus/usb/devices/2-2.1/power/level > /dev/null
echo 2 | sudo tee /sys/bus/usb/devices/2-2.1/power/autosuspend > /dev/null
essentially disabling autosuspend on this bus. Will test how it works, but you may want to try it too.

Edit: For XPS 9560 USB-C Port it will be:
Code:
echo on | sudo tee /sys/bus/usb/devices/4-1.1/power/level > /dev/null
echo 2 | sudo tee /sys/bus/usb/devices/4-1.1/power/autosuspend > /dev/null

Last edited by Wunsz; 10-30-2017 at 11:18 AM.
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