[Bug 98494] Screen flickering in Black Mesa game

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98494

            Bug ID: 98494
           Summary: Screen flickering in Black Mesa game
           Product: Mesa
           Version: 13.0
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: wolfgang-wallner at gmx.at
        QA Contact: dri-devel at lists.freedesktop.org

The Black Mesa game has been released for Linux.[1]
Unfortunately, the game flickers every 2-3 seconds when I run it on my discrete
AMD card.

System:
HP Pavilion Laptop
Intel Sandybridge
AMD HD6770M discrete graphics card
8GB RAM
Kubuntu 16.10 with Kernel 4.8 (default)
Mesa 13.1.0-devel (according to kinfocenter) from the oibaf PPA
KDE Plasma 5.7.5

The screen flickering does not happen if I run the game on the integrated Intel
graphics card.

I tried the following without effect:
*) Changing graphics settings
*) Enabling/disabling desktop effects
*) Changing from two monitors to only one monitor

The bug is also reported to the Black Mesa developers in the steam forums [2].
If I can provide any additional information, please let me know.

[1]
http://steamcommunity.com/games/362890/announcements/detail/548704237438813135
[2]
http://steamcommunity.com/app/362890/discussions/0/312265327168384714/?ctp=2#c312265589446784251

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