I'm not able to reproduce this bug on my oneiric box, and unfortunately the stacktrace that was automatically included lacks most of the symbols.
Please collect a full backtrace manually using gdb - see http://wiki.ubuntu.com/X/Backtracing for directions (skip down past all the apport directions for the stuff relating to gdb). ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete ** Visibility changed to: Public -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/821090 Title: Xephyr assert failure: Xephyr: ../../../../include/privates.h:116: dixGetPrivateAddr: Assertion `key->initialized' failed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/821090/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp