Black screen, 100 percent CPU usage
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
LightDM GTK Greeter |
New
|
Unknown
|
Bug Description
Hello,
after boot and lock screen (`lightdm-
This happens on my laptop with closed lid in a docking station with two external monitors.
Name : lightdm
Version : 1:1.18.3-1
Name : lightdm-gtk-greeter
Version : 1:2.0.2-1
`uname -a`
Linux schwarzbaer 4.8.2-1-ARCH #1 SMP PREEMPT Mon Oct 17 08:11:46 CEST 2016 x86_64 GNU/Linux
During the high CPU usage, I get:
`ps ax | grep lightdm`
578 ? SLsl 0:00 /usr/bin/lightdm
591 tty7 Ssl+ 0:34 /usr/lib/
1596 ? Sl 0:00 lightdm --session-child 12 19
4264 tty8 Ssl+ 0:00 /usr/lib/
4270 ? Sl 0:00 lightdm --session-child 19 23
4280 ? Ssl 0:03 /usr/sbin/
4307 ? S 0:00 lightdm --session-child 13 23
4328 tty2 S+ 0:00 grep lightdm
So maybe there are two sessions started somehow?
`sudo tail -n 30 /var/log/
[+1819.28s] DEBUG: Seat seat0 changes active session to c6
[+1852.17s] DEBUG: Seat seat0 changes active session to c7
[+1852.17s] DEBUG: Session c7 is already active
[+1857.07s] DEBUG: Continue authentication
[+1857.08s] DEBUG: Session pid=4307: Authentication complete with return value 0: Success
[+1857.08s] DEBUG: Authenticate result for user dominik: Success
[+1857.08s] DEBUG: User dominik authorized
[+1857.08s] DEBUG: Greeter sets language en_US.utf8
[+1857.14s] DEBUG: Greeter requests session xmonad-dominik
[+1857.14s] DEBUG: Seat seat0: Returning to existing user session dominik
[+1857.14s] DEBUG: Unlocking login1 session c2
[+1857.15s] DEBUG: Activating VT 7
[+1857.15s] WARNING: Error using VT_WAITACTIVE 7 on /dev/tty0: Interrupted system call
[+1857.15s] DEBUG: Seat seat0: Stopping greeter
[+1857.15s] DEBUG: Session pid=4270: Sending SIGTERM
[+1857.15s] DEBUG: Activating login1 session c2
[+1857.15s] DEBUG: Session pid=4307: Exited with return value 0
[+1857.15s] DEBUG: Seat seat0: Session stopped
[+1857.18s] DEBUG: Greeter closed communication channel
[+1857.18s] DEBUG: Session pid=4270: Exited with return value 0
[+1857.18s] DEBUG: Seat seat0: Session stopped
[+1857.18s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+1857.18s] DEBUG: Sending signal 15 to process 4264
[+1857.50s] DEBUG: Seat seat0 changes active session to c2
[+1857.50s] DEBUG: Session c2 is already active
[+1857.52s] DEBUG: Process 4264 exited with return value 0
[+1857.52s] DEBUG: DisplayServer x-1: X server stopped
[+1857.52s] DEBUG: Releasing VT 8
[+1857.52s] DEBUG: DisplayServer x-1: Removing X server authority /run/lightdm/
[+1857.52s] DEBUG: Seat seat0: Display server stopped
Please let me know if I can provide further logs.
description: | updated |
Changed in lightdm-gtk-greeter: | |
importance: | Undecided → Unknown |
status: | New → Unknown |
Changed in lightdm-gtk-greeter: | |
status: | Unknown → New |
This is still affecting me and renders lightdm unusable. It only happens when two external screens are attached.