[Bug 58552] New: [Bisected]Xinit fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58552

          Priority: high
            Bug ID: 58552
                CC: xunx.fang at intel.com
          Assignee: chris at chris-wilson.co.uk
           Summary: [Bisected]Xinit fails
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 71837
  --> https://bugs.freedesktop.org/attachment.cgi?id=71837&action=edit
Xorg.0.log

System Environment:
--------------------------
Arch:        x86_64     
Platform:    Ivybridge
Libdrm:    (master)libdrm-2.4.40-3-g0980633afd9c7eecc0c75ef3bea4d3c6b7aa1898
Mesa:    (master)d8287bac1fd4a77abc2db38de134f14176740d23
Xserver:(master)xorg-server-1.13.0-207-g3420a7778c7d5eaa638327f31dd460554c257bb1
Xf86_video_intel:(master)2.20.16-28-gbfd96b092db5e4e0fc2446752deafd1156cf37b3
Cairo:    (master)5d21c9e224617110678a5b854a6a41049a02fca2
Libva:    (staging)b8d3cf092c9b07cfd909552a3c160b7db3b5a91d
Libva_intel_driver:(staging)a6dfb8f7fb601f102b414ac0c9088b5b8e88060f
Kernel:    (drm-intel-nightly) 44a679d18424b218190ef8b505cced30e4605cb5

Bug detailed description:
------------------------- 
xinit fails.

Bisect shows: 79cb6304e983514dd754065e65e2381a903f9bd6 is the first bad commit.
commit 79cb6304e983514dd754065e65e2381a903f9bd6
Author:     Chris Wilson <chris at chris-wilson.co.uk>
AuthorDate: Tue Dec 18 13:49:59 2012 +0000
Commit:     Chris Wilson <chris at chris-wilson.co.uk>
CommitDate: Tue Dec 18 14:09:03 2012 +0000

    sna/xvmc: Clean up to avoid crash'n'burn


output:
Initializing built-in extension DRI2
Loading extension GLX

Fatal server error:
no screens found
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE) Please also check the log file at "/opt/X11R7/var/log/Xorg.0.log" for
additional information.
(EE)
Server terminated with error (1). Closing log file.
xinit: giving up
xinit: unable to connect to X server: Connection refused
xinit: server error


Reproduce steps:
----------------
1. xinit

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