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Samuel Pitoiset (Valve) discovered an issue in radeonsi (Mesa) that Marek Olšák has now patched up and is already in Mesa-git.

The patch was sent to the Mesa-dev list here on the 18th and made it into Mesa-git the next day.

From the commit:
Quoteradeonsi: don't forget to add HTILE to the buffer list for texturing

This fixes VM faults. Discovered by Samuel Pitoiset.

I was pointed to this thanks to by Pierre-Loup Griffais (Valve) on Twitter, as I completely overlooked this patch myself.

This should fix issues in:
- Wasteland 2 (bug report)
- Dirt Showdown (bug report)
- CS:GO (bug report)
- Payday 2 (bug report)
- Deus Ex Mankind Divided

And possibly even more games!

The issue wasn't the same in each game. Some games would hang after a while due to a "GPU fault", but others may have had broken graphics. This seems to fix a bunch of issues together caused by the root issue. Article taken from GamingOnLinux.com.
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ziabice 21 Jan, 2017
Liam, do you know if there will be a new point release after Mesa 13.0.3 including this bugfix or we should expect it directly into Mesa 17?
dmantione 21 Jan, 2017
I also experienced VM faults in Cities:Skylines, which runs perfectly fine with the GPUPRO driver on my RX460. I hope this patch is backported to Mesa 13.x.
Grim85 21 Jan, 2017
Quoting: ziabiceLiam, do you know if there will be a new point release after Mesa 13.0.3 including this bugfix or we should expect it directly into Mesa 17?

If it's in mesa-git today, then it wont be in 17.0 (the next release) as it has already branched, unless they deem it an important enough fix
gurv 21 Jan, 2017
Great news, thanks for reporting!

RadeonSI just keeps getting better and better!
So thank you / merci Samuel and Valve.
And thank you to all people involved on amdgpu/radeonsi/dc-dal/radv...

My shiny new MSI RX 470 should be arriving next week, so I'll be able to test all that :)
natewardawg 21 Jan, 2017
I'm more and more convinced I will go all AMD on my next rig :)
Kyrottimus 21 Jan, 2017
I get the impression Valve is going to announce/release something in the not-too-distant-future. They've been clearing a path of any and all obstacles, and for Linux gamers, the last real ones were that proper support for AMD cards had fallen way behind. I don't think it'll be like that much longer.

At this rate, in a month or two it would not surprise me to have AMD/NVIDIA driver parity, at least regarding supported features, working stable version of Vulkan, etc.

The only way to get Linux Gaming to really take off is to remove the drawbacks [fewer and fewer each month] and the benefits will speak for themselves.

Mark my words, someday, when Vulkan is at full speed (the true equalizer), and a big AAA game comes out for Linux/Mac/Windows, someone will do a comparative benchmark and realize how powerful a Linux Kernel is when its no longer staked to the ground with outdated APIs, hodge-podge drivers or a shoddy game port.


Last edited by Kyrottimus on 21 January 2017 at 3:04 pm UTC
Liam Dawe 21 Jan, 2017
Quoting: KyrottimusI get the impression Valve is going to announce/release something in the not-too-distant-future. They've been clearing a path of any and all obstacles, and for Linux gamers, the last real ones were that proper support for AMD cards had fallen way behind. I don't think it'll be like that much longer.
Yes, VR support for Linux is a big reason why Valve is getting Mesa sorted out on AMD.
Kyrottimus 21 Jan, 2017
Quoting: liamdaweYes, VR support for Linux is a big reason why Valve is getting Mesa sorted out on AMD.

Yes, indeed. But is VR the only reason? Let's hope they have more up their sleeve.


Last edited by Kyrottimus on 21 January 2017 at 3:19 pm UTC
Liam Dawe 21 Jan, 2017
Quoting: Kyrottimus
Quoting: liamdaweYes, VR support for Linux is a big reason why Valve is getting Mesa sorted out on AMD.

Yes, indeed. But is VR the only reason? Let's hope they have more up their sleeve.
VR is very demanding hardware and feature wise, so it's easily their main reason.
LinuxDonald 21 Jan, 2017
Quoting: ziabiceLiam, do you know if there will be a new point release after Mesa 13.0.3 including this bugfix or we should expect it directly into Mesa 17?

The change will be backportet to mesa 13.0 and 17.0

See commit:
https://cgit.freedesktop.org/mesa/mesa/commit/?id=e490b7812cae778c61004971d86dc8299b6cd240
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