[Bug 107511] New: gpu drm bug that it sometimes prevents gdm startup

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=107511

            Bug ID: 107511
           Summary: gpu drm bug that it sometimes prevents gdm startup
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.1.10-100.fc21.x86_64
          Hardware: Intel
                OS: Linux
              Tree: Fedora
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: failtofail at 126.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 192471
  --> https://bugzilla.kernel.org/attachment.cgi?id=192471&action=edit
it is the output of command 'dmesg'

I upgraded my Fedora21 kernel to 4.1.10-100.fc21.x86_64, after upgrade, when I
startup my PC, sometimes, it looks like the gdm can't start. Because of that, I
can't input my username\password to login. I used dmesg to check that, it looks
like the bug occurs in gpu relevant drivers.
I attached the dmesg.log below.

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