[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #7 from Alexander Tsoy  ---
(In reply to Alexander Tsoy from comment #2)
> (In reply to Michel Dänzer from comment #1)
> > Seems to work fine on my Cape Verde. What brand and model do you have
> > specifically?
> 
> Gigabyte GV-R775OC-2GI.

JFYI: This card was unstable when operating at 850Mhz sclk (same problem on
Windows). After flashing VBIOS from GV-R775D3-2GI (same card physically, but
with 800MHz sclk) it works fine now. So this looks like a faulty vendor
overclock.

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84836

Marek Olšák  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #6 from Marek Olšák  ---
Not sure what fixed this, but there is no GPU hang anymore. I also disabled the
drirc workaround, so that Heaven would fail to compile its shaders. Tested on
my VERDE.

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #5 from Michel D?nzer  ---
(In reply to Alexander Tsoy from comment #4)
> - Unrelated to this bug, but.. animation is VERY choppy. I constantly see
> several-seconds-long freezes, and sometimes >10 sec long freezes.

Should be better with current Mesa Git master, see bug 84662.

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #4 from Alexander Tsoy  ---
(In reply to Marek Ol??k from comment #3)
> I think you forgot to install drirc from Mesa. What happens if you set this
> env var?

No, I have correct drirc.

> 
> allow_glsl_extension_directive_midshader=true

Setting this env variable doesn't help.


(In reply to Michel D?nzer from comment #1)

> Can you try a newer kernel?

I just tried 3.17.0:

- GPU still hangs if ARB_sample_shading is not disabled.

- It seems lockup detection timeout was increased significantly:

kernel: radeon :01:00.0: ring 0 stalled for more than 91985msec
kernel: radeon :01:00.0: GPU lockup (waiting for 0xe90a last
fence id 0xe8fb on ring 0)

- Unrelated to this bug, but.. animation is VERY choppy. I constantly see
several-seconds-long freezes, and sometimes >10 sec long freezes.

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #3 from Marek Ol??k  ---
I think you forgot to install drirc from Mesa. What happens if you set this env
var?

allow_glsl_extension_directive_midshader=true

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #2 from Alexander Tsoy  ---
(In reply to Michel D?nzer from comment #1)
> Seems to work fine on my Cape Verde. What brand and model do you have
> specifically?

Gigabyte GV-R775OC-2GI. And if that matters, it's a revision with Micron
memory, flashed with latest available BIOS version F3.

> 
> Can you try a newer kernel?

I'll try 3.16 and 3.17 kernels next week.

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[Bug 84836] VERDE lockup with Unigine Valley/Heaven if ARB_sample_shading is enabled

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https://bugs.freedesktop.org/show_bug.cgi?id=84836

--- Comment #1 from Michel D?nzer  ---
Seems to work fine on my Cape Verde. What brand and model do you have
specifically?

Can you try a newer kernel?

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