[Bug 92575] Massive graphics corruption on Iris Graphics 6100

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92575

            Bug ID: 92575
           Summary: Massive graphics corruption on Iris Graphics 6100
           Product: Mesa
           Version: 10.6
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: kirys at neoteroi.org
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Hi all
I own an Intel NUC5i7RYH linked to 3 monitors (1 on HDMI and two on the display
port using a splitter)
The cpu is an i7-5557U with Iris Graphics 6100.
Till 3 week ago (older fedora provided mesa driver) I was using the SNA driver
without any issues till the update of the mesa and kernel.

Now the SNA is unusable, under SNA some monitors are not drawed at all for
hours (the login progress bar stays also after the login is completed and
neither the mouse shows) but sometimes (at random) it remember to update the
screen and it shows that it should appear there...
And most of software (like firefox) shows massive graphics corruptions.
So I switched to UXA and as a result the performance dropped so much that a
video played on youtube make the machine unusable and any kde animation is
choppy!

Distribution Fedora 22
Hardware: NUC5i7RYH
Kernel: 4.2.3-200.fc22.x86_64
X.Org X Server 1.17.2
GLX version: 1.4
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.6.9
(git-8957b69)
OpenGL core profile shading language version string: 3.30
OpenGL version string: 3.0 Mesa 10.6.9 (git-8957b69)
OpenGL shading language version string: 1.30
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.6.9 (git-8957b69)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
libdrm 2.4.61

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