Comment 0 for bug 947844

I have problems with alt+tab. When I use it the bars where are (close,minimize and maximize) disappear. And compiz is not even installed. I installed it and try to make some changes but it almost always crashes and I can't even reboot with terminal. System freezes. I thing maybe is something to do with VGA drivers, because when I installed 12.10 when I move windows they appear to lag like I have low fps. My VGA is nvidia 450GTS and now I am with 295 .20 drivers which I install from app "additional drivers".

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: libnux-2.0-0 2.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
Date: Tue Mar 6 11:29:38 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fd9446a56e0: cmp 0x18(%rax),%r14
 PC (0x7fd9446a56e0) ok
 source "0x18(%rax)" (0x1e000060002be1c) not located in a known VMA region (needed readable region)!
 destination "%r14" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 calloc () from /lib/x86_64-linux-gnu/libc.so.6
 XOpenDisplay () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 nux::WindowThread::ThreadCtor(_XDisplay*, unsigned long, __GLXcontextRec*) () from /usr/lib/libnux-2.0.so.0
 nux::CreateFromForeignWindow(unsigned long, __GLXcontextRec*, void (*)(nux::NThread*, void*), void*) () from /usr/lib/libnux-2.0.so.0
Title: compiz crashed with SIGSEGV in calloc()
UpgradeStatus: Upgraded to precise on 2012-03-06 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare