I installed 12.04 alpha 1 on a newly partitioned disk. The behaviour was exactly the same: mousing over the sound applet icon caused the error reported above. zerwas' Composite xorg.conf edit seems to be all that was needed to make the problem go away.
My xorg.conf was generated by nvidia-settings for two monitors of different resolutions on the same card using 'X screen + Xinerama', if that helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/883592 Title: Clicking sound menu crashes unity-panel-service To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/883592/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs