Would it be possible to get the info requested in comment #10 please? Does booting with drm_kms_helper.poll=0 added to the kernel command line help? That is the fix for the known stall referenced in comment #6. Is there a known good kernel that does work, and if not would it be possible to try later kernels to see if they do work please? Seeing if it works properly on http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.8.8-raring/ for instance would be a helpful start.
** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/964231 Title: System Stutter When HDMI Monitor Is Connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/964231/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs