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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

Based on the info in the Guest user's ~/.cache/upstart/unity7.log file,
it looks to be some issue in the Intel driver in the kernel:

intel_do_flush_locked failed: Invalid argument

When this occurs, Compiz starts over and over again.

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https://bugs.launchpad.net/bugs/1355196

Title:
  unity crashes on login, compiz cpu and memory intensive

Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  Recent upgrade and reboot/re-login left me with a generally unusable compiz/unity.
  On login, the desktop icons move back and forth several times, I believe this correlates with ~/.xesssion-errors 'unity main process ended' messages like:

  upstart: gnome-keyring main process (7364) killed by TERM signal
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd main process ended, respawning
  upstart: at-spi2-registryd respawning too fast, stopped
  upstart: unity7 main process (7477) terminated with status 1
  upstart: unity7 main process ended, respawning
  upstart: unity7 main process (7910) terminated with status 1
  upstart: unity7 main process ended, respawning
  upstart: unity7 main process (7939) terminated with status 1

  Then after login unity/compiz is basically unusable.
  compiz has 
   $ pidof compiz
  8144
  $ cat /proc/8144/statm 
  424082 75989 15631 3 0 241850 0
  $ cat /proc/8144/status 
  Name:	compiz
  State:	S (sleeping)
  Tgid:	8144
  Ngid:	0
  Pid:	8144
  PPid:	7240
  TracerPid:	0
  Uid:	1000	1000	1000	1000
  Gid:	1000	1000	1000	1000
  FDSize:	64
  Groups:	4 20 24 46 104 116 118 124 126 127 133 1000 
  VmPeak:	 1764100 kB
  VmSize:	 1694584 kB
  VmLck:	       0 kB
  VmPin:	       0 kB
  VmHWM:	  302272 kB
  VmRSS:	  302092 kB
  VmData:	  965520 kB
  VmStk:	     136 kB
  VmExe:	      12 kB
  VmLib:	  101692 kB
  VmPTE:	    1504 kB
  VmSwap:	       0 kB
  Threads:	8
  SigQ:	0/15005
  SigPnd:	0000000000000000
  ShdPnd:	0000000000000000
  SigBlk:	0000000000000000
  SigIgn:	0000000000001000
  SigCgt:	0000000180014003
  CapInh:	0000000000000000
  CapPrm:	0000000000000000
  CapEff:	0000000000000000
  CapBnd:	0000003fffffffff
  Seccomp:	0
  Cpus_allowed:	3
  Cpus_allowed_list:	0-1
  Mems_allowed:	00000000,00000001
  Mems_allowed_list:	0
  voluntary_ctxt_switches:	269139
  nonvoluntary_ctxt_switches:	116421

  
  top shows compiz eating anywhere from 40 to 80% cpu, and having 300M resident memory.  Additionally, Xorg is sitting 5-20% while I'm typing this in firefox.  The only application I have open at the moment is gnome-terminal and firefox.

  My previous attempt to use chromium left its window un-resizable.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: unity 7.3.0+14.10.20140731.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7
  Uname: Linux 3.16.0-6-generic x86_64
  ApportVersion: 2.14.5-0ubuntu4
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,snap,commands,mousepoll,grid,move,place,imgpng,session,vpswitch,resize,regex,gnomecompat,unitymtgrabhandles,wall,resizeinfo,animation,workarounds,fade,scale,expo,ezoom,unityshell]
  CurrentDesktop: Unity
  Date: Mon Aug 11 09:53:07 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2011-10-19 (1027 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  SourcePackage: unity
  UpgradeStatus: Upgraded to utopic on 2013-05-20 (448 days ago)

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