This did happen to me on Intrepid, thinkpad X41 tablet. The issue was that the 
fingerprint reader would "crash", thus not being recognized by the USB 
subsystem anymore (error -71). The solution was to activate autosuspend for it:
echo "auto" > /sys/devices/pci0000:00/0000:00:1d.2/usb4/4-2/power/level
Then the device would virtually "disconnect" from the USB bus and reconnect 
upon usage, which does not only reduce energy consumption, but in this case 
helped that it would be recognized again.

-- 
gnome-screensaver doesn't use fingerprint reader after suspend or hibernate
https://bugs.launchpad.net/bugs/252012
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to