I have the same error at intel_set_mode+0x25/0x30 [i915]. X won't always come back to login screen, but screen turns black and every X client dies.
I can reproduce it consistently by triggering resolution changes. Important information: I am using kde with kwin as window manager (this appears to be OP's case as well, since his "InstallationMedia" is listed as "Kubuntu 12.04"). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1251873 Title: X crashes back to login screen when running firefox, chrome, etc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1251873/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
