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[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Changed in: ubuntu
   Importance: Undecided => Critical

** Package changed: ubuntu => xorg (Ubuntu)

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https://bugs.launchpad.net/bugs/1441570

Title:
  System becomes unresponsive during normal usage

Status in xorg package in Ubuntu:
  Confirmed

Bug description:
  The system becomes unresponsive (including stuttering audio, slow
  mouse cursor, freezing) after an hour or so of usage (sometimes more
  and sometimes less). Usage at the time was a web browser idling
  (observed with both Chromium and Firefox) and a music player
  (Clementine) in the background. There were no CPU intensive
  applications running at the time.

  I was able to capture cpu usage during an episode with the following command (nice set to -20).:
  'while true; do ps -eo pcpu,pid,user,args | sort -k 1 -nr | head -30 >> logfile; echo -e "\n"`date` >> logfile; sync; sleep 1; done'
  Attached is an excerpt from the generated log file.

  
  Ubuntu Version:
  Ubuntu Vivid Vervet (development branch) 15.04

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
  Uname: Linux 3.19.0-12-generic x86_64
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Wed Apr  8 20:15:52 2015
  EcryptfsInUse: Yes
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)

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