[Bug 93649] [radeonsi] Graphics lockup while playing tf2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93649

--- Comment #27 from AmarildoJr <amarildosjr at riseup.net> ---
(In reply to Marek Olšák from comment #26)
> (In reply to AmarildoJr from comment #25)
> > Marek, since you work for AMD, I wonder if you could get a few hints for the
> > fix on Catalyst's sources?
> 
> It's not so simple. This is a bug somewhere in the Mesa driver such that
> looking at other drivers won't likely help.

This is a very weird issue. I think it may not be in Mesa, and here's why:

* On Debian Jessie with kernel 3.16 and Mesa 10.3, the problem doesn't happen;
* On the same Debian, but with mesa backported, the problem also doesn't
happen;
* On the same Debian with Mesa backported and the Kernel backported, the
problem still doesn't happen;
* On Arch Linux with Mesa downgraded to 10.3, the problem happens;
* On the same Arch Linux with Mesa and Kernel downgraded (Kernel to version
3.16 and even 3.10), the problem still happens;
* I'm not 100% sure I downgraded the Firmware on Arch, but I'll try today since
I'm testing a few drivers in Linux;
* On vanilla Arch with Catalyst/FGLRX, the problem doesn't happen;

So I do think this issue is much bigger than everybody thinks and only happens
with a certain combination of Mesa, Kernel, Firmware, and possibly libdrm,
llvm, and other pieces of software as well.

What I really think is that VALVe should investigate this since this problem
started happening after they introduced mandatory Texture Streaming.

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