According to the (just linked) Debian bug this is related to using Option "BackingStore" "true" in xorg.conf.
Also, when it just now happened again this happened after giving focus to thunderbird and selecting some mail folder. Like mentioned in the Debian bug, thunderbird was likely to popup its "new mail" window, but then Xorg crashed. -- Xorg crashed with SIGSEGV in miRegionDestroy() https://bugs.launchpad.net/bugs/157881 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
