The latest 6GB patch is causing an error on Steam Deck when loading the game…

The error reads - “unsupported backbuffer image count”

It’s in front of a blank black screen and won’t load the game at all after multiple attempts. The game was successfully loading on the Steam Deck before the patch.

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Assertion failed: !status && "vkDestroyQueryPool", file /home/ubuntu/buildbot/runners/wine/wine-src/dlls/winevulkan/loader_thunks.c, line 3426

this is the error that pops up on lutris

Removing this as it is no longer necessary and so no one links to it in 3 years talking about how they found a "great tweak".

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Update: The hotfix on July 25th seems to have addressed this issue, you should be able to just delete the .drirc and carry on.

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dkamerad wrote:

Copy pasting my post from reddit. This is assuming you're using AMD.

There was a workaround in Mesa's drivers for PoE that is no longer neccessary. You'll need to put a file named ".drirc" in your home directory with these contents https://pastebin.com/9KnFpwTb . Then the game should launch, at least it does on my desktop linux system.

darn, it works. i put it in env variables in lutris

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dkamerad wrote:

Copy pasting my post from reddit. This is assuming you're using AMD.

There was a workaround in Mesa's drivers for PoE that is no longer neccessary. You'll need to put a file named ".drirc" in your home directory with these contents https://pastebin.com/9KnFpwTb . Then the game should launch, at least it does on my desktop linux system.

this worked for my Fedora 37 workstation, nice tip

Before the patch I was using Proton 7.0-6 on PopOS with MESA to get the game running. After the patch it bricked all three 7.0-6, 8.0-3 and Experimental versions for me while 8.0 and Experimental would only flash a black screen and 7.0-6 throwing the "unsupported backbuffer image count" error.

With the following fix [1] (thank you kindly) I got all three versions running - testing Experimental for now assuming to achieve best performance -.

As a sidenote don't forget to backup your filters. Luckily booting with different Proton versions did not reset my filters yet but I can recall losing all my filters last time after having to switch Proton versions.


EDIT: Thanks to the side effect of making newest Proton run the performance increased quite a lot on my end. Obviously shaders had to be rerendered though. CPU and GPU ( 6800 XT at 100W 55C) running fine.

[1]

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dkamerad wrote:

Copy pasting my post from reddit. This is assuming you're using AMD.

There was a workaround in Mesa's drivers for PoE that is no longer neccessary. You'll need to put a file named ".drirc" in your home directory with these contents https://pastebin.com/9KnFpwTb . Then the game should launch, at least it does on my desktop linux system.

So I was able to add that flag to Lutris to make it work but making that file in my home dir didnt fix steam. Did I do something wrong? Or can someone assit in directing me on what might be going on?

https://imgur.com/a/IK689uZ

https://imgur.com/a/z13Lrsw


EDIT: I spelled the file wrong it works now. PEBKAC

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There was a workaround in Mesa's drivers for PoE that is no longer neccessary. You'll need to put a file named ".drirc" in your home directory with these contents https://pastebin.com/9KnFpwTb . Then the game should launch, at least it does on my desktop linux system.

The .drirc file worked for me! Thank you very much.

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dkamerad wrote:

Copy pasting my post from reddit. This is assuming you're using AMD.

Thanks so much! Would have had to play D4 instead without this.

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internet_TOUGH_GUY_123456 wrote:

i put it in env variables in lutris

Doh, thank you for saying you put it in your Lutris's enviornment variables (i.e. you click `configure` > `System options` and then you add them there). I was wondering why the Lutris wasn't picking up the values from the dot file.

This env adjustment, fixes the issue for me, too.