I encounter this problem on my desktop pc that has just been freshly
installed with Ubuntu 14.04 on a regular basis. No changes or tweaks to
Unity. The problem started right after install. I have two laptops
running Ubuntu with Unity not having this problem.
The crash is triggered when you open multiple windows of the same
application and click on the application icon in the launcher bar. The
first time I do this compiz can recover itself and I get a Apport
notification. If I accidentally trigger the bug a second time it
completely crashes, does not recover and launcher, window borders as
well as menubar are gone.
Using Alt+Tab to switch the window works without problems.
** Changed in: unity
Status: New => Confirmed
** Tags added: amd64
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https://bugs.launchpad.net/bugs/1293242
Title:
compiz crashed with SIGSEGV in ScaleScreen::getWindows()
Status in Unity:
Confirmed
Status in “unity” package in Ubuntu:
Confirmed
Bug description:
Unity se cerró luego de utilizar la utilidad ''Unity Tweak Tool''
especificamente al activar la opción ''Despliegue de ventanas''
Sistema actualizado, he debido reiniciar el equipo.
ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140313-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
Uname: Linux 3.13.0-17-generic i686
ApportVersion: 2.13.3-0ubuntu1
Architecture: i386
CurrentDesktop: Unity
Date: Sun Mar 16 17:58:29 2014
ExecutablePath: /usr/bin/compiz
InstallationDate: Installed on 2014-02-27 (17 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140224)
ProcCmdline: compiz
SegvAnalysis:
Segfault happened at: 0xb177dc54 <_ZNK11ScaleScreen10getWindowsEv+4>:
mov 0x24(%eax),%eax
PC (0xb177dc54) ok
source "0x24(%eax)" (0x00000024) not located in a known VMA region (needed
readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
ScaleScreen::getWindows() const () from /usr/lib/compiz/libscale.so
unity::UnityScreen::OnInitiateSpread() () from
/usr/lib/compiz/libunityshell.so
sigc::internal::slot_call0<sigc::bound_mem_functor0<void,
unity::UnityScreen>, void>::call_it(sigc::internal::slot_rep*) () from
/usr/lib/compiz/libunityshell.so
sigc::internal::signal_emit0<void,
sigc::nil>::emit(sigc::internal::signal_impl*) () from
/usr/lib/compiz/libunityshell.so
unity::PluginAdapter::OnScreenGrabbed() () from
/usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in ScaleScreen::getWindows()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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