You have been subscribed to a public bug:
laptop: HP G42
Ubuntu: 18.04 LTS
After clicking logout or switch user, once the system reaches the
greeter/login screen, input devices -- keyboard, mouse, touchpad -- stop
working, making it impossible to login back or shutdown.
Initially I thought the system is frozen, but log shows that it still
respnds to lid open/close, usb plug/unplug events, scheduled background
tasks etc. Only the input devices, both onboard and external, are not
usable. There's an external monitor attached to the laptop, and it shows
the greeter and changes when lid is open or closed.
What works:
* logging in during fresh boot. Keyboard and mouse work at the greeter.
* suspend/resume, lock/unlock screen. I'm able to enter password and get back
to my session.
* shutdown/restart while logged in.
What doesn't work:
* logout
* switch user
17.10 and other previous versions of ubuntu didn't have this issue on
the same machine.
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: 18.04
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Input devices stop working after logout or switch-user
https://bugs.launchpad.net/bugs/1776534
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Bugs, which is subscribed to gdm3 in Ubuntu.
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