As stated above, the kernel i915 driver is the most likely place for root cause analysis. Package 'xserver-xorg-video-intel' might be a likely candidate for further investigation. Looking at the changelog (https://launchpad.net/ubuntu/+source/xserver-xorg-video- intel/+changelog) I see a patch was added to allow the user to disable page-flipping, and later a subsequent removal of said patch.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/765813 Title: [drm:intel_prepare_page_flip] *ERROR* Prepared flip multiple times every frame with intel graphics -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
