Seems like cairo releated. It's an old bug and without duplicated. Marking as invalid.
** Changed in: unity Status: New => Invalid ** Changed in: unity (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/943813 Title: unity crashed with SIGSEGV Status in Unity: Invalid Status in unity package in Ubuntu: Invalid Bug description: 1. opened dash menu 2. inserted usb-flash & unity freezed 3. after removing flash unity/compiz were restarted ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: unity 5.4.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6 Uname: Linux 3.2.0-17-generic-pae i686 ApportVersion: 1.93-0ubuntu2 Architecture: i386 CrashCounter: 1 Date: Thu Mar 1 08:44:32 2012 ExecutablePath: /usr/bin/compiz InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120228) ProcCmdline: compiz SegvAnalysis: Segfault happened at: 0xb3f4a558: or %bh,(%ecx) PC (0xb3f4a558) ok source "%bh" ok destination "(%ecx)" (0x00000014) not located in a known VMA region (needed writable region)! Stack memory exhausted (SP below stack segment) SegvReason: writing NULL VMA Signal: 11 SourcePackage: unity StacktraceTop: ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2 Title: compiz crashed with SIGSEGV UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/943813/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp