[Bug 100790] [REGRESSION] Civilization VI start screen rendered incorrectly with Mesa 17.1-rc2 on Skylake GT2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100790

            Bug ID: 100790
           Summary: [REGRESSION] Civilization VI start screen rendered
                    incorrectly with Mesa 17.1-rc2 on Skylake GT2
           Product: Mesa
           Version: 17.1
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: bero at lindev.ch
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 131026
  --> https://bugs.freedesktop.org/attachment.cgi?id=131026&action=edit
Garbled screen

The Civilization VI start screen (unfortunately, so far I haven't found a way
to reproduce this using only open code) is displayed incorrectly (see attached
screenshot) with Mesa 17.1-rc2.

Mesa 17.0.4 works well.

Graphics card is:
00:02.0 0300: 8086:191b (rev 06) (prog-if 00 [VGA controller])
        Subsystem: 1025:105b
        Flags: bus master, fast devsel, latency 0, IRQ 126
        Memory at 82000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 90000000 (64-bit, prefetchable) [size=256M]
        I/O ports at b000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

Linux kernel 4.11-rc5, libdrm 2.4.80, latest released Xorg bits.

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