Comment 7 for bug 942286

since applying the update CCSM occasionally freezes when enabling a
plug-in and will crash the desktop I can still get to a console (ttty3)
where I have tried restarting lightdm and restarting the X-server and
compiz, sometimes sudo restart lightdm does get the desktop going again,
but usually I have to sudo reboot.
After rebooting the plugin seems to work but when I try to enable or
disable anything it freezes again and I end up having to reboot again.
so mixed results so far
Cliff Tinker
--
John Clifford Tinker

On Thu, 2012-04-26 at 09:55 +0000, Omer Akram wrote:

> ** Description changed:
>
> + SRU testcase
> +
> + 1. install unity from precise-proposed
> + 2. make sure unity does not crash while enabling/disabling a plugin in CCSM
> +
> crashes evry time i change the settings
>
> ProblemType: Crash
> DistroRelease: Ubuntu 12.04
> Package: libnux-2.0-0 2.4.0-0ubuntu2
> ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
> Uname: Linux 3.2.0-17-generic x86_64
> NonfreeKernelModules: fglrx
> ApportVersion: 1.93-0ubuntu2
> Architecture: amd64
> CrashCounter: 1
> Date: Mon Feb 27 22:23:49 2012
> ExecutablePath: /usr/bin/compiz
> InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.2)
> ProcCmdline: compiz
> ProcEnviron:
> - LANGUAGE=en_GB:en
> - PATH=(custom, no user)
> - LANG=en_GB.UTF-8
> - SHELL=/bin/bash
> + LANGUAGE=en_GB:en
> + PATH=(custom, no user)
> + LANG=en_GB.UTF-8
> + SHELL=/bin/bash
> SegvAnalysis:
> - Segfault happened at: 0x7fcbefbb026e: mov %r12,0x10(%rcx)
> - PC (0x7fcbefbb026e) ok
> - source "%r12" ok
> - destination "0x10(%rcx)" (0x300000b0002e914) not located in a known VMA region (needed writable region)!
> + Segfault happened at: 0x7fcbefbb026e: mov %r12,0x10(%rcx)
> + PC (0x7fcbefbb026e) ok
> + source "%r12" ok
> + destination "0x10(%rcx)" (0x300000b0002e914) not located in a known VMA region (needed writable region)!
> SegvReason: writing unknown VMA
> Signal: 11
> SourcePackage: nux
> StacktraceTop:
> - unity::dash::ResultView::~ResultView() () from /usr/lib/compiz/libunityshell.so
> - unity::dash::ResultViewGrid::~ResultViewGrid() () from /usr/lib/compiz/libunityshell.so
> - unity::dash::ResultViewGrid::~ResultViewGrid() () from /usr/lib/compiz/libunityshell.so
> - nux::Object::Destroy() () from /usr/lib/libnux-core-2.0.so.0
> - nux::Object::UnReference() () from /usr/lib/libnux-core-2.0.so.0
> + unity::dash::ResultView::~ResultView() () from /usr/lib/compiz/libunityshell.so
> + unity::dash::ResultViewGrid::~ResultViewGrid() () from /usr/lib/compiz/libunityshell.so
> + unity::dash::ResultViewGrid::~ResultViewGrid() () from /usr/lib/compiz/libunityshell.so
> + nux::Object::Destroy() () from /usr/lib/libnux-core-2.0.so.0
> + nux::Object::UnReference() () from /usr/lib/libnux-core-2.0.so.0
> Title: compiz crashed with SIGSEGV in unity::dash::ResultView::~ResultView()
> UpgradeStatus: Upgraded to precise on 2012-02-26 (1 days ago)
> UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
>
> ** Also affects: unity (Ubuntu Precise)
> Importance: High
> Status: Fix Committed
>