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Ready for a long weekend testing out the latest Steam Play Proton compatibility layer? Good news! Valve announced the release of Proton 6.3-1 along with a Proton Experimental update.

This is a big release as it rebases Proton from Wine 5.13 to 6.3 which comes with thousands of changes! That does include a lot of new Windows games that Valve say are confirmed playable on Linux including:

  • Divinity: Original Sin 2
  • Shenmue I & II
  • Mass Effect 3 N7 Digital Deluxe Edition (2012)
  • Tom Clancy's Rainbow Six Lockdown
  • XCOM: Chimera Squad
  • Bioshock 2 Remastered
  • Company of Heroes 2
  • logiCally
  • Rise of the Triad
  • Home Behind 2
  • Shadow Empire
  • Arena Wars 2
  • King Arthur: Knight's Tale
  • Rise of Venice
  • ARK Park
  • Gravity Sketch
  • Battle Arena VR

On top of all that it also updates DXVK (D3D9, D3D10 and D3D11 to Vulkan) to version 1.8.1, it upgrades VKD3D-Proton (D3D12 to Vulkan) to version 2.2, FAudio was bumped up to 21.03.05 and also Wine-Mono to 6.1.1.

A bunch of what was previously in the separate Proton Experimental was pulled into Proton 6.3 including: improvements for non-US keyboard layouts, improved video support, support for setting thread priorities via RTKit (or Unix priorities if your user has permissions), controller layout and hotplugging improvements in Slay the Spire and Hades, improved PlayStation 5 controller support and also improvements to Virtual Reality startup time and compatibility.

Further to that there's also improvements to Uplay sign-in, G29 steering support in Assetto Corsa Competizione, fixes for Microsoft Flight Simulator in VR mode, fixes for cutscenes in Bioshock 2 Remastered and also an overhauled build system to greatly reduce build times.

You will also find a new updates to Proton Experimental too including:

  • All changes from Proton 6.3-1.
  • Performance improvements around input, windowing, and memory allocation.
  • Added support for Vulkan child window rendering.
  • Better support Anno 1404 - History Edition.
  • Updated file distribution method to save disk space.

Full changelog here.


Update - 07/04/21: Proton 6.3-2 is out now fixing "stuttering mouse cursor issue during longer play sessions".

Article taken from GamingOnLinux.com.
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23 comments
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STiAT 1 Apr
Divinity: Original Sin 2

No, I did not read that. It's not there.

Oh damn, weekend wasted.
Corben 1 Apr
Interesting to see Bioshock 2 Remastered on the list. I just completed it with Proton 5.13-6, I've just disabled esync, and it was running pretty solid. During my ca 20 hour play through (incl. the DLC), I had like 3 crashes.

Oh, and if it crashes, and even created a core file in the binary's path, make sure to delete the core file, as the game won't start otherwise anymore. Same is true for Bioshock 1 or even the Borderlands games, so it seems to be a 2K thing. It even won't start on Windows anymore if a core file is present, but Windows normally doesn't create a core dump on a crash :D
So it might side-load something on start from a core file.
dorron 2 Apr
Great! Took them a long time to release a new one...
Quoting: dorronGreat! Took them a long time to release a new one...

15 Feb - that's just a month-and-a-half. And I thought I was impatient. :)
Beamboom 2 Apr
Divinity 2!!🎉 Oh yay, finally! ❤️
dorron 2 Apr
Quoting: rustybroomhandle
Quoting: dorronGreat! Took them a long time to release a new one...

15 Feb - that's just a month-and-a-half. And I thought I was impatient. :)

My bad. I meant moving from wine 5 to 6 ...
Nanobang 2 Apr
Quoting: CorbenInteresting to see Bioshock 2 Remastered on the list. I just completed it with Proton 5.13-6, I've just disabled esync, and it was running pretty solid. During my ca 20 hour play through (incl. the DLC), I had like 3 crashes.

Oh, and if it crashes, and even created a core file in the binary's path, make sure to delete the core file, as the game won't start otherwise anymore. Same is true for Bioshock 1 or even the Borderlands games, so it seems to be a 2K thing. It even won't start on Windows anymore if a core file is present, but Windows normally doesn't create a core dump on a crash :D
So it might side-load something on start from a core file.

Hey Corben, thanks for the heads up. How would I go about finding this core dump file if I needed to?


Last edited by Nanobang on 2 April 2021 at 12:33 pm UTC
ColdPie 2 Apr
Quoting: dorron
Quoting: rustybroomhandle
Quoting: dorronGreat! Took them a long time to release a new one...

15 Feb - that's just a month-and-a-half. And I thought I was impatient. :)

My bad. I meant moving from wine 5 to 6 ...

What was there in newer Wine that you were waiting for? Most stuff that is important for gaming gets backported.
robredz 2 Apr
Lets see if it fixes Postal 4 that became dodgy with the latest update March 1st, as it fell over with the Epic C++ Runtime error, earlier version fine & dandy.
stan 2 Apr
  • Supporter
Divinity 2 has been working for a while with Proton Glorious Eggroll. But still good to see it included in the official proton release.
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