Re: Debian 9.2 amd64 Xfce lock screen -> 100 %CPU by lightdm-gt+
On 10/11/17 21:43, davidson wrote:
On Wed, 11 Oct 2017, David Christensen wrote:
I have a Dell Inspiron 6400 laptop with:
2017-10-11 20:06:21 dpchrist@tinkywinky ~
$ cat /etc/debian_version
9.2
2017-10-11 20:07:34 dpchrist@tinkywinky ~
$ uname -a
Linux tinkywinky 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28)
x86_64 GNU/Linux
Recently, I've noticed that if I lock the screen and walk away, when I
return the CPU fan is on high speed. When I unlock the screen, the
CPU Graph indicates that one of my two CPU cores was pegged at 100%,
but dropped off once I logged in.
If I lock the screen and SSH in from another machine, 'top' says:
...
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+
...
AFAICT, that command name is truncated. In interactive top, you can
scroll with right-arrow, to view the rest of the name. With that
information, your search results might improve.
Could be lightdm-gtk-greeter? Or something else, I guess.
...
Thanks for the tip. Making my Xfce Terminal wider, I see more of the
name, but it's still truncated (as are several others with long names).
RTFM top(1) -- I can use the -b (batch mode), -n 1 (number of
iterations), and -w (output-width-override) options and redirect the
output to file:
2017-10-11 22:51:04 dpchrist@tinkywinky ~
$ top -b -n 1 -w
top - 22:52:43 up 15:45, 2 users, load average: 0.98, 0.53, 0.27
Tasks: 232 total, 3 running, 229 sleeping, 0 stopped, 0 zombie
%Cpu(s): 13.7 us, 2.3 sy, 0.2 ni, 83.4 id, 0.4 wa, 0.0 hi, 0.0 si,
0.0 st
KiB Mem : 2043196 total, 535484 free, 780640 used, 727072 buff/cache
KiB Swap: 1952764 total, 1744820 free, 207944 used. 980428 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
9957 lightdm 20 0 587348 51196 25444 R 88.2 2.5 2:41.03
lightdm-gtk-gre
...
Searching for a package 'lightdm-gtk-gre':
2017-10-11 23:00:37 dpchrist@tinkywinky ~
$ apt-cache search lightdm-gtk-gre
lightdm-gtk-greeter - simple display manager (GTK+ greeter)
lightdm-gtk-greeter-settings - settings editor for the LightDM GTK+ Greeter
Your hunch of 'lightdm-gtk-greeter' looks right.
Checking the bugs for 'lightdm-gtk-greeter' -- nope:
https://bugs.debian.org/cgi-bin/pkgreport.cgi?dist=unstable;package=lightdm-gtk-greeter
David
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