[Bug 87869] New: Screen reset on external DVI monitors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87869

            Bug ID: 87869
           Summary: Screen reset on external DVI monitors
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: frank at franksworld.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

I have a Dell Ultrabook E7440 using one of the Dell ePort docking stations with
dual DVI outputs on it.

Periodically my screen will reset, almost like the resolution was changed. This
only happens on the 2 monitors connected via DVI. the Xorg logs do not show any
relevant information.

I upgraded to kernel 3.19.0-rc2 when the issue started occuring. I was
originally running an older kernel that did not natively support both monitors.
I had to use a modified libXinrama to span the display across both monitors.

Now, with 3.19, both monitors are properly detected, but this reset is rather
annoying.

I believe this may be related to this bug:

https://bugs.freedesktop.org/show_bug.cgi?id=72795

Let me know what information needs to be provided to look into this.

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