[Bug 60391] New: [i915 regr] 3.7.x corrupt console image, crash starting X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60391

          Priority: medium
            Bug ID: 60391
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [i915 regr] 3.7.x corrupt console image, crash
                    starting X
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: blocker
    Classification: Unclassified
                OS: Linux (All)
          Reporter: ncm at cantrip.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: DRI CVS
         Component: DRM/Intel
           Product: DRI

On booting a 3.7.x kernel (tried 3.7.[45]), when the display switches from VGA
to HD DRI mode, small fragments of the upper left part of the image are
scattered and duplicated over the full screen.  The fragments are about 1/2 of
a text line high, and maybe 1/10 screen wide.  After boot, I can see just
enough to recognize a prompt, and blind login/halt succeeds.  All the image
fragments update in sync.

On starting X, locks up solid, with staggered color stripes maybe 1/10 screen
high, no response to any input/ping.  No errors are preserved in Xorg.log on
reboot.

Kernels 3.[23456].x have been fine, incl. current 3.6.10.

Dell Latitude E6510 1920x1080, intel M520 2.4GHz, i915 Arrandale.
Modules i915,drm,drm_kms_helper,intel_gtt,intel_agp,agpgart,i2c_algo_bit
No boot options are set

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