Every once in a while (almost once a day!!!!!) at the very moment I click on some launcher icon (on the left of the screen), the whole system freezes and stops responding to both mouse and keyboard. The mouse cursor still moves but it doesn't respond to clicks.
CPU use goes relatively high, but not even close to 100%. And no disk activity at all.
The system doesn't even respond to Ctrl+Alt+F1 (switch to virtual terminal).
This has happened to me clicking on launcher icons of the Terminal in some occasions, and of Thunderbird on other occasions, so it doesn't seem to be related to any application in particular.
THIS IS HUGE, this happens to me almost every day (sometimes more than once a day)
This is similar to other issues I've reported recently but this is not exactly the same (actually I thought I _had_ reported this very one but I can't find it):
- CPU consumption does NOT reach 100%, though it does go relatively high. I can tell because of the fan: when cpu is 100% it spins much faster; while in other issues I've reported cpu went to 100% (it was compiz)
- the system becomes COMPLETELY unresponsive, not just _almost_ unresponsive, meaning that you don't have even the smallest chance to have a keystroke or click captured (well, or the chance is so much smaller that it basically never happens); and everything is completely frozen, it won't move the smallest bit after a while: for example the launcher won't ever hide - while in other issues I reported you would see things happening at intervals and very jerkily.
- this alway at the precise instant I click on a launcher icon, while in other issues I've reported it happens randomly at any time, e.g. while typing.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.12.0-0ubuntu0.2
ProcVersionSignature: Ubuntu 3.5.0-27.46-generic 3.5.7.7
Uname: Linux 3.5.0-27-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
CompizPlugins: [core,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,commands,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Sun Apr 7 15:53:17 2013
InstallationDate: Installed on 2010-06-23 (1019 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to quantal on 2013-01-13 (84 days ago)
Happened one more time.
Please for god's sake, what logs can I upload to help diagnose and fix this issue quickly?
I can't believe this isn't getting the least attention. This renders Ubuntu completely unusable and makes it the most unstable OS ever.