[Bug 95010] New: Screen Flickering on Intel Card

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95010

            Bug ID: 95010
           Summary: Screen Flickering on Intel Card
           Product: DRI
           Version: XOrg git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: carlo.abelli at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

I have a Dell XPS 13 running Arch Linux. Updating to kernel version 4.5.0 has
caused screen flickering (quick black flashes that come in bursts). Downgrading
to 4.4.5 does fix this flickering. Not sure exactly what the issue is but it
persists whether the xf86-video-intel driver is installed or not.

dmesg reports the following error when running kernel 4.5.0 but not 4.4.5:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun

Perhaps this is related. Here the thread on Arch Linux forums:
https://bbs.archlinux.org/viewtopic.php?pid=1620382#p1620382

Booting with i915.enable_rc6=0 solves the issue; however this is just a
temporary fix in my opinion.

Bug was initially filed here:
https://bugzilla.kernel.org/show_bug.cgi?id=116431

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20160418/34426942/attachment-0001.html>