I have a similar problem with a USB mouse, except in my case:
* Unplugging the mouse from the dock and replugging it fixes the problem.
* If I do nothing, the kernel appears to disconnect and reconnect the mouse
with a new device number, and it works again until the next hang.
Dell Precision 5530
Yep - I'd seen the man page for xrandr, but xbacklight has no effect on
my hardware, which is why I used xrandr. I guess as far as the
workarounds go, just use whatever works for you. Cheers.
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I have the same problem with a ZBook 14 with Intel/AMD graphics. My
current workaround is to use this script (which is actually what I use
on my desktop at night):
#!/bin/bash
xrandr -q | grep " connected" | awk '{print $1}' | while read d; do
echo "setting $d"
xrandr --output $d --brightness
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