[Bug 54711] New: Screen corruption with Intel Integrated Graphics i915

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=54711

           Summary: Screen corruption with Intel Integrated Graphics i915
           Product: Drivers
           Version: 2.5
    Kernel Version: >=3.7
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
        AssignedTo: intel-gfx-bugs at lists.freedesktop.org
        ReportedBy: jackhill at jackhill.us
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: Yes


Created an attachment (id=94321)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=94321)
Image of screen corruption

I have an Intel graphics contoller,

$ lspci |grep VGA
00:02.0 VGA compatible controller: Inter Corporation Core Processor Integrated
Graphics Controller (rev 02)

I am using kms/drm. On older kernels (e.g. 3.6) during startup, kms would be
enable and it would switch to the high resolution consols (later, X could also
ue the graphics contoller correctly). On newer kernels (e.g. 3.7 and 3.8) I
observed the corruption (see attached image) when kms was enabled. Other than
the screen corruption in both the text console and X, everything worked fine.

I used git bisect to narrow down the problem to commit
edef7e685da05c13cce50c0126189c80fe2c8f71

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