[Bug 68030] New: [Haswell] blank Screen with intel ddx on first use right after using fbdev ddx. Breaking SuSE Install

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68030

          Priority: medium
            Bug ID: 68030
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [Haswell] blank Screen with intel ddx on first use
                    right after using fbdev ddx. Breaking SuSE Install
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: rodrigo.vivi at gmail.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 83979
  --> https://bugs.freedesktop.org/attachment.cgi?id=83979&action=edit
script to reproduce bug

Bug description:

Blank screen on the first intel DDX run right after running FBDEV DDX.
Not even possible to alternate to fbcon. Have to reboot or restart X to get
screen back.

This behaviour breaks SuSE installation.

System environment:
-- chipset: Haswell
-- system architecture: x86_64
-- xf86-video-intel: xorg-x11-driver-video-7.4.0.1-0.81.27
-- xserver: 1.6.5
-- libdrm: 2.4.41-0.8.46
-- kernel: nightly 7e4f3f0cb9d232721bfdaa00c27c5550f70428a8 3.11.0-rc4-0.11
-- Linux distribution: SLED
-- Display connector: DP

Reproducing steps:

- Run Intel ddx and stop it.
- Run FBDEV ddx and stop it.
- Run Intel ddx again.
- Blank Screen (only on first run after fbdev)
- Restart X or machine and screen is back.

-- 
You are receiving this mail because:
You are the QA Contact 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/20130812/9f9b45db/attachment.html>