[Bug 96743] [BYT, HSW, SKL, BXT, KBL] GPU hangs with GfxBench 4.0 CarChase

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96743

--- Comment #14 from Topi Pohjolainen <topi.pohjolainen at intel.com> ---
After some narrowing down I hacked the driver to use CCS_E only for three
surfaces of size 1920:1080. None of them is mipmapped or arrayed. Two of them
are rendered and sampled as pair. Disable CCS_E even for one these and I don't
seem to get the gpu hang anymore. But even with these three I get roughly one
run out of four runs without the hang. So I don't have anything conclusive yet.
Still trying to narrow this down.

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