touch-packages team mailing list archive

[timothymowens <1431654@xxxxxxxxxxxxxxxxxx>]

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 gdb output debug info, the process stopped utilizing 100%
of my cpu.  Once I quit gdb, the process started utilizing 100% of a cpu
core once again.

If it helps, the debug output is in the attached file.

** Attachment added: "lightdm_gdb_output.txt"
   https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+attachment/4346642/+files/lightdm_gdb_output.txt

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1431654

Title:
  lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage

Status in lightdm package in Ubuntu:
  Confirmed

Bug description:
  Since updating lightdm today, one core of my CPU is always maxed out
  at 100%.  I rolled back to version 1.2.3-0ubuntu2.5 and the issue
  stopped.  I tried this with 2 different kernels: 3.2.0-77-generic and
  3.2.0-79-generic and and version 1.2.3-0ubuntu2.6 of lightdm still
  caused 100% cpu usage.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: lightdm 1.2.3-0ubuntu2.6
  ProcVersionSignature: Ubuntu 3.2.0-77.114-generic 3.2.66
  Uname: Linux 3.2.0-77-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.8
  Architecture: amd64
  Date: Thu Mar 12 20:20:12 2015
  ExecutablePath: /usr/sbin/lightdm
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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