Looks like the same issue as https://bugs.freedesktop.org/show_bug.cgi?id=83497, "Pipe A FIFO underrun" can be seen from dmesg.
@PHLin, our bug is https://bugs.launchpad.net/somerville/+bug/1352820, can you grab the kernel in comment #72 and give it a try? ** Changed in: linux (Ubuntu) Assignee: Alberto Milone (albertomilone) => (unassigned) ** Bug watch added: freedesktop.org Bugzilla #83497 https://bugs.freedesktop.org/show_bug.cgi?id=83497 ** Changed in: hwe-next Status: Triaged => Incomplete ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: hwe-next Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407913 Title: In 3840x2160 high resolution mode, display would blink with Chrome / Chromium browser opened, or with certain page in Firefox To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1407913/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
