This bug was fixed in the package lightdm - 1.2.3-0ubuntu2.7
---
lightdm (1.2.3-0ubuntu2.7) precise; urgency=medium
* debian/patches/15_gsources.patch:
- Correctly remove GSources on finalize (LP: #1431654)
lightdm (1.2.3-0ubuntu2.6) precise; urgency=medium
*
I can confirm this bug
Solution with package version 1.2.3-0ubuntu2.7 works.
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To manage
Confirmation for the 32-bit version as well: 1.2.3-0ubuntu2.7 fixed it.
Thanks!
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To
Confirmation as well: Fix in 1.2.3-0ubuntu2.7 works, no longer high CPU
usage.
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To manage
The bug fixed for me on Linux paz 3.2.0-79-generic-pae #115-Ubuntu SMP Thu Mar
12 14:33:25 UTC 2015 i686 i686 i386 GNU/Linux
Thank you very much!
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I can confirm as well that lightdm v1.2.3-0ubuntu2.7 has indeed fixed
this issue for me. Thank you for the quick turnaround!
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Title:
lightdm
** Tags removed: verification-needed
** Tags added: verification-done
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To manage
Hello timothymowens, or anyone else affected,
Accepted lightdm into precise-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/lightdm/1.2.3-0ubuntu2.7 in a few
hours, and then in the -proposed repository.
Please help us by testing this new package.
** Branch linked: lp:ubuntu/precise-proposed/lightdm
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To manage notifications about this
this new package lightdm/1.2.3-0ubuntu2.7
is ok for me. thank
Le 19/03/2015 21:01, Brian Murray a écrit :
Hello timothymowens, or anyone else affected,
Accepted lightdm into precise-proposed. The package will build now and
be available at
Thank's to @robert-ancell and @timothyowens.
Noob question : when will we see the new patch version in update manager ?
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Title:
lightdm
It looks like the changes in 1.2.3-0ubuntu2.6 may have changed the
timing slightly and exposed an existing bug (possibly bug 836616).
@timothyowens tested a fix from lp:lightdm/1.2 so I've released
1.2.3-0ubuntu2.7 with that.
** Changed in: lightdm (Ubuntu)
Status: Confirmed = Fix
** Tags added: regression-proposed
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
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I'm still not able to reproduce this problem locally.
There are two patches that may be causing this problem:
09_close_pipes.patch and 11_quit_timeout.patch (the others seem unlikely
to have caused a problem like this).
What would be very useful is if someone who is reproducing the problem can:
I may not be doing this correctly, but I ran the following to attempt to
debug the running lightdm process using the package from the precise
proposed ppa again. The command I ran is:
sudo gdb lightdm 24513
Of course, 24513 was the running lightdm process. Interesting thing
here is, once
To add to comment #17, just now I replaced my empty 09_close_pipes.patch
file with the actual patch, then rebuilt, installed and restarted the
lightdm process. Upon logging in, it's back to using 100% of a cpu core
again. So when the 09 patch is removed, no high cpu usage. When the
patch is put
Could you try building with an updated version of the patch I've
attached? It's a bit of a stab in the dark but I've fixed a potential
case where stdout might get accidentally closed.
** Patch added: 09_close_pipes.patch
First patch didn't fix the issue:
root 11395 93.0 0.0 270668 3488 ?Rsl 22:26 1:00 lightdm
root 11401 12.3 1.2 263008 149876 tty7Ss+ 22:26 0:08 /usr/bin/X :0
-auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
I will try the 2nd one now.
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Unfortunately, the 2nd patch still produces the high cpu usage on one
core:
root 2054 93.8 0.0 270668 3488 ?Rsl 22:35 1:40 lightdm
root 2091 10.4 1.3 283756 170820 tty7Ss+ 22:35 0:11 /usr/bin/X :0
-auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
--
Third times a charm :)
** Patch added: 09_close_pipes.patch
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+attachment/4346681/+files/09_close_pipes.patch
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** Tags added: patch
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
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Looks like that did it:
root 18958 0.0 0.0 270668 3496 ?Ssl 23:26 0:00 lightdm
root 18964 11.0 1.0 246424 133256 tty7Ss+ 23:26 0:08 /usr/bin/X :0
-auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
Good work!
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Hi Robert,
While I am a developer, I don't have much experience developing in Linux
or using Bazaar (bzr). With that being said, I wasn't exactly sure how
to disable a patch per say, so what I did was backed up
09_close_pipes.patch by moving it to my desktop, then issuing touch
And it that doesn't work here is another updated patch.
** Patch added: 09_close_pipes.patch
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+attachment/4346676/+files/09_close_pipes.patch
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@timothyowens - great work! Thanks for pinpointing the patch.
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
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FYI, in case there are some lesser experienced users that have this
issue and are looking for a temporary solution for the time being, below
are the instructions to revert to the previous release of lightdm until
this gets resolved.
You can do this with the following command in a terminal (CTRL +
Also, an addendum to the previous instructions, the Ubuntu repo that has
version 1.2.3-0ubuntu2.5 of lightdm is the precise-updates repo. To add
that repository, do the following:
From terminal:
sudo gedit /etc/apt/sources.list
Add the following lines to the end of your file:
##
Fully confirm bug.
Ubuntu 12.04.5 LTS
3.2.0-79-generic-pae #115-Ubuntu SMP Thu Mar 12 14:33:25 UTC 2015 i686 i686
i386 GNU/Linux
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Title:
Same bug here
Ubuntu 12.04.5 LTS
3.2.0-79-generic #115-Ubuntu SMP Thu Mar 12 14:18:19 UTC 2015 x86_64 x86_64
x86_64 GNU/Linux
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Title:
lightdm
Same issues on Dell XPS developer edition:
PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND
1562 root 20 0 264m 3488 2836 R 100
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: lightdm (Ubuntu)
Status: New = Confirmed
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Title:
Same here, 32_bit:
3.2.0-79-generic #115-Ubuntu SMP Thu Mar 12 14:21:14 UTC 2015 i686 i686 i386
GNU/Linux
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Title:
lightdm (1.2.3-0ubuntu2.6)
If it helps, here's the x-0-greeter.log file while running lightdm
v1.2.3-0ubuntu2.5 (when the 100% usage doesn't occur).
** Attachment added: x-0-greeter1.log
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+attachment/4343757/+files/x-0-greeter1.log
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You received this bug
Here's the x-0-greeter.log file generated from lightdm
v1.2.3-0ubuntu2.6.
** Attachment added: x-0-greeter.log
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+attachment/4343749/+files/x-0-greeter.log
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I apologize, the version of the kernel that was running when log file
was generated was 3.2.0-79-generic (not 3.2.0-19-generic). Sorry for
the typo.
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Do you have /var/log/lightdm/lightdm.log after this occurs? Thanks.
** Changed in: lightdm (Ubuntu)
Importance: Undecided = Critical
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Title:
Process 28882 is the X server that has been started for the greeter.
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
To manage
Could you also get /var/log/lightdm/x-0-greeter.log?
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Title:
lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage
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Here is the lightdm log file pulled from /var/log/lightdm/lightdm.log.
At 98.76s, I logged out of my session, but didn't get a log-in screen
again (black screen on both monitors).
At this point I killed the process (28882) so that I could downgrade
lightdm again (from ctrl+alt+F1) and log back
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