[Bug 99659] New: [KBL] Display Flashing Every Few Seconds

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99659

            Bug ID: 99659
           Summary: [KBL] Display Flashing Every Few Seconds
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: viveksjain at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 129307
  --> https://bugs.freedesktop.org/attachment.cgi?id=129307&action=edit
dmesg with drm.debug=0xe

Bug description:
I've been trying to get Ubuntu 16.10 working on my custom PC with Intel core
i3-7100 (Kaby Lake), but can't get the graphics working properly. My display
flashes off regularly - about once every second if I use resolution 1920x1080,
rendering it practically unusable, and once every 5-10 seconds with resolution
800x600. I'm fairly certain it's a driver issue because everything worked fine
when I installed Windows, and also works in Ubuntu if I switch to the console
(Ctrl-Alt-F1). The frequency seems to be correlated with how much change there
is on the screen - if I don't move anything at resolution 800x600, it doesn't
blink.

I've tried suggestions online to use the latest kernel version (tried both
4.10-rc6 from mainline kernel PPA and latest from drm-intel-nightly), updated
graphics drivers from Oibaf's PPA, used Intel's Graphics Update Tool, and put
magical incantations in Xorg conf files (including turning DRI off), but
ultimately to no avail.

System environment:
-- system architecture: x86_64
-- kernel: 4.10.0-994.201702012102 (latest on
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/)
-- xserver-xorg-video-intel: 2:2.99.917+git1702011933.9fe04a~gd~y (from Oibaf)
-- Linux distribution: Ubuntu (also tried Fedora)
-- Motherboard model: Gigabyte H270N-WIFI
-- Display connector: HDMI

Additional info:
Let me know if there's anything else I should run.

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