You have to use gdb to get a backtrace from Xorg like described in https://wiki.ubuntu.com/DebuggingXorg and you need another machine to log in remotely.
-- [HARDY] X crashes randomly (i915) https://bugs.launchpad.net/bugs/201352 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
