[Bug 80010] New: screen black when starting X after commit eb1bfe807cb7b62a326fa20df5e3118a32c6f923 in linux kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80010

          Priority: medium
            Bug ID: 80010
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: screen black when starting X after commit
                    eb1bfe807cb7b62a326fa20df5e3118a32c6f923 in linux
                    kernel
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: trohwer85 at gmail.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: DRI CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 101023
  --> https://bugs.freedesktop.org/attachment.cgi?id=101023&action=edit
log of bisection process

I have the problem with newer Linux kernels, that after starting X the screen
is black. Suspend/resume fixes the problem.
I bisected the problem (log attached). I then reproduced the problem with Linux
kernel version 3.15.0:
In the vanilla version the problem exists (dmesg output attached in comment).
Removing the line

.initial_config = intel_fb_initial_config,

in drivers/gpu/drm/i915/intel_fbdev.c

fixes the problem (dmesg output attached in comment).

The machine is a Thinkpad T61. I also attached the kernel .config in a comment.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140614/284a9317/attachment.html>