[Pkg-xfce-devel] Bug#878313: lightdm-gtk-greeter: laptop, external monitor, Debian 9.2 amd64 Xfce, lock screen -> 100 %CPU
Package: lightdm-gtk-greeter
Version: 2.0.2-1
Severity: normal
Dear Maintainer,
* What led up to the situation?
Install Debian 9 amd64 Xfce on Dell Inspiron 6400 and update.
Connect external monitor, switch screen to external monitor, close laptop lid.
Add CPU Graphs and Action Buttons to Xfce panel.
Enable Action Buttons -> Lock Screen button.
Click on Lock Screen button.
After a while, CPU fan goes to high speed.
Unlock screen.
CPU Graph indicates one CPU was pegged, but returned to normal after
unlocking screen.
* What exactly did you do (or not do) that was effective (or
ineffective)?
Log in via SSH from another machine and run 'top':
top - 20:02:15 up 12:54, 1 user, load average: 0.28, 0.42, 0.73
Tasks: 217 total, 3 running, 214 sleeping, 0 stopped, 0 zombie
%Cpu(s): 45.6 us, 6.3 sy, 0.0 ni, 48.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 2043196 total, 820100 free, 661892 used, 561204 buff/cache
KiB Swap: 1952764 total, 1823528 free, 129236 used. 1145664 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7473 lightdm 20 0 587348 51332 25584 R 94.6 2.5 0:14.52 lightdm-gt+
7462 root 20 0 259828 19656 13144 S 10.6 1.0 0:01.66 Xorg
2463 root 20 0 349180 44600 6068 S 0.4 2.2 3:20.36 mongod
514 mongodb 20 0 322476 11664 5328 R 0.2 0.6 2:59.51 mongod
638 root 20 0 384964 24920 15168 S 0.2 1.2 6:34.34 Xorg
886 root 20 0 3333780 10052 7872 S 0.2 0.5 0:26.93 jsvc
7455 dpchrist 20 0 43272 3344 2768 R 0.2 0.2 0:00.06 top
993 root 20 0 4413496 289804 10428 S 0.1 14.2 1:36.59 java
1113 dpchrist 20 0 191548 17040 12000 S 0.1 0.8 1:01.25 xfwm4
If I enarge the Terminal, I can see more of the COMMAND names. In this
case, 'lightdm-gtk-gre'.
* What was the outcome of this action?
'lightdm-gtk-greeter' is using 100 %CPU when screen is locked while
using external monitor with laptop.
* What outcome did you expect instead?
%CPU should be at or near 0 for all COMMANDs.
* Additional information:
https://lists.debian.org/debian-user/2017/10/msg00379.html
https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1635125
https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1448214
https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1509780
Thank you,
David
-- System Information:
Debian Release: 9.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968), LANGUAGE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages lightdm-gtk-greeter depends on:
ii libc6 2.24-11+deb9u1
ii libcairo2 1.14.8-1
ii libgdk-pixbuf2.0-0 2.36.5-2+deb9u1
ii libglib2.0-0 2.50.3-2
ii libgtk-3-0 3.22.11-1
ii liblightdm-gobject-1-0 1.18.3-1
ii libx11-6 2:1.6.4-3
Versions of packages lightdm-gtk-greeter recommends:
ii adwaita-icon-theme [gnome-icon-theme-symbolic] 3.22.0-1+deb9u1
ii desktop-base 9.0.2+deb9u1
ii gnome-themes-standard 3.22.2-2
ii policykit-1 0.105-18
lightdm-gtk-greeter suggests no packages.
-- no debconf information
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