[Expired for Unity because there has been no activity for 60 days.]
** Changed in: unity
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1134357
Title:
At random times whole system hangs; on occasions Ctrl+Alt+F1 followed
by Ctrl+Alt+F7 fixes it, other times have to do hardware power off
Status in Unity:
Expired
Status in unity package in Ubuntu:
Expired
Bug description:
I clicked on the Thunderbird launcher icon in the launcher, and the whole
system hanged and stopped responding.
The cursor still kept moving with the movements of the mouse (it got stuck
every once in a while), though the cursor arrow graphics got corrupted, but I
couldn't click on anything.
Keyboard didn't work too: I tried alt+tab and even ctrl+alt+F1 to access a
virtual terminal, but keyboard input didn't produce any effect.
CPU consumption was high, or at least the cooler fan was running fast.
I had no choice but to force a power down.
After that, after a new fresh boot, I clicked the Thunderbird launcher icon
again and the same happened again!!!! There's probably some bug in Thunderbird
triggering this, but if a single program can hang the whole system in an
unrecoverable way something's wrong in either Unity, Xorg or Linux.
This second time, I was able to switch to a virtual terminal with
Ctlr+Alt+F1. Then I went back to normal screen with Ctrl+Alt+F7 and it fixed
the issue!!!!!! (without doing anything from the terminal).
After this, everything behaved as if the Tab key of the keyboard was
continuously pressed (which it wasn't, ovbviously) and this got fixed by
actually pressing and releasing it. (I guess when the system was not
responding, the key press was received and the key released was not processed;
this must never ever happen no matter how hanged the cpu is).
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.12.0-0ubuntu0.2
ProcVersionSignature: Ubuntu 3.5.0-25.38-generic 3.5.7.4
Uname: Linux 3.5.0-25-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: Wed Feb 27 14:24:00 2013
InstallationDate: Installed on 2010-06-23 (980 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 (45 days ago)
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