Got the same problem on 12.10 on a ivy bridge and intel HD4000, some times after log in black screen, als when I switch users in X.
Kernel show these messages: [ 241.667578] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 0 stuck This happens on stock 12.10 kernel and on kernel 3.6.2 from the ppa Linux neghvar 3.6.2-030602-generic #201210121823 SMP Fri Oct 12 22:24:18 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/929635 Title: [snb-m-gt2] Blank screen after login or after connecting second monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/929635/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
