[Bug 105201] New: [SKL] LFP flickers continuously making it unusable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105201

            Bug ID: 105201
           Summary: [SKL] LFP flickers continuously making it unusable
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: kumar at shobhit.info
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 137520
  --> https://bugs.freedesktop.org/attachment.cgi?id=137520&action=edit
Kernel Dmesg Logs for single display LFP boot.

The system configuration is as follows

Laptop - Hp pro-book 440 g3
SKU - SKL GT2
OS - Failed in same way for Elementary OS, Ubuntu 17.04
Native Resolution - 1366x768

System boots without flickers if we put nomodset, but not otherwise. Already
tried almost latest drm-intel-next. Dmesg attached(for Ubuntu single display
boot). Some experiments done which do not have any impact - disable rc6, FBC,
DC states

Connecting an HDMI in dual display config, has HDMI working but thats on 10x7
config and not in its native 14x9. Local eDP still continues to flicker like
crazy. Don't see any under run error logs.

Any patches to try just let me know and I can get the testing done. Right now
short on time and resources to debug myself and any help/pointers will be very
much appreciated. Thanks.

-- 
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/20180222/23b05324/attachment-0001.html>