ok, found and installed the unity-dbgsym and libnux-4.0-0-dbgsym but that does not change the backtrace, so I assume it's a compiz bug.
I followed https://wiki.ubuntu.com/DebuggingCompiz. There they say to install compiz-core-dbgsym compiz-plugins-dbgsym compiz-fusion-plugins-main-dbgsym compiz-fusion-plugins-extra-dbgsym compizconfig-backend-gconf-dbgsym libcompizconfig0-dbgsym compiz-gnome-dbgsym after adding the debug debs deb http://ddebs.ubuntu.com vivid main restricted universe multiverse deb http://ddebs.ubuntu.com vivid-updates main restricted universe multiverse deb http://ddebs.ubuntu.com vivid-proposed main restricted universe multiverse and running apt-get update. ;-) But there are not any compiz-dbgsym in the repositories. any idea? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity in Ubuntu. https://bugs.launchpad.net/bugs/1470097 Title: Unity does not support cpus without sse4 Status in Compiz: New Status in Unity: Incomplete Status in compiz package in Ubuntu: New Status in unity package in Ubuntu: Incomplete Bug description: Unity uses sse4 instructions which are not available on older celeron or pentium cpus. The instruction being used causing unity to crash is PEXTRD In this case one cannot login into the default unity session. current workaround is to install gnome. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: unity 7.3.2+15.04.20150420-0ubuntu1 [modified: usr/bin/unity] ProcVersionSignature: Ubuntu 3.19.0-21.21-generic 3.19.8 Uname: Linux 3.19.0-21-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CurrentDesktop: GNOME Date: Tue Jun 30 14:32:20 2015 InstallationDate: Installed on 2015-06-29 (0 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1470097/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
