Confused on Steam Play and Proton? Be sure to check out our guide.

Proton Experimental fixes Final Fantasy XIV Online launcher

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Valve has pushed out another update to Proton Experimental, the special version of Proton you can try that has more features before they roll out to the stable versions.

As of the update on May 19 these are newly playable:

  • We Were Here Forever
  • Cities XXL
  • Cladun X2
  • Succubus x Saint
  • Cursed Armor

Some extra bug fixes and improvements:

  • Fix the new Final Fantasy XIV Online launcher
  • Fix The Turing Test crashing when starting Chapter 4
  • Improve FPS in Street Fighter V during online matches
  • Fix controller support in Mini Ninja

You will also find that video playback has been fixed for these titles:

  • Solasta: Crown of the Magister
  • Power Rangers: Battle for the Grid
  • The Room 4: Old Sins.

The changelog can be seen here at any time.

Need to know how to change the Proton version used? See the below video:

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Many more Steam Deck Guides available on our dedicated YouTube Playlist.

Text guide (Steam Deck):

  • Pick a game and head to the little COG icon on the right.
  • Click Properties, then Compatibility on the left.
  • Make sure the tickbox is done, then select it from the dropdown.

On a Linux desktop:

  • Right click a game, go to Properties.
  • Compatibility on the left.
  • Make sure the tickbox is done, then select it from the dropdown.
Article taken from GamingOnLinux.com.
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10 comments

I'd love to try FFXIV online…but I don't need another monthly subscription if I end up liking it that much.
Raaben 20 May
Sadly I still can't get the FFXIV launcher to work; both Proton Experimental and the latest GE crash as soon as I try to log in.
STiAT 20 May
Quoting: RaabenSadly I still can't get the FFXIV launcher to work; both Proton Experimental and the latest GE crash as soon as I try to log in.

I really had to set up a clean prefix for that crash to disappear after I used XIVLauncher and GE 6.21 for a while now.
Raaben 20 May
Quoting: STiAT
Quoting: RaabenSadly I still can't get the FFXIV launcher to work; both Proton Experimental and the latest GE crash as soon as I try to log in.

I really had to set up a clean prefix for that crash to disappear after I used XIVLauncher and GE 6.21 for a while now.

I made sure both the FF14 and relative compatdata directories were all deleted before trying each.


Last edited by Raaben on 20 May 2022 at 12:58 pm UTC
Rob-Retro 20 May
Quoting: Raaben
Quoting: STiAT
Quoting: RaabenSadly I still can't get the FFXIV launcher to work; both Proton Experimental and the latest GE crash as soon as I try to log in.

I really had to set up a clean prefix for that crash to disappear after I used XIVLauncher and GE 6.21 for a while now.

I made sure both the FF14 and relative compatdata directories were all deleted before trying each.

That normally works, but you could also check something has not got stuck in both steamapps/downloading and steamapps/temp folders, and last but not least have a look inside userdata/xxxxxxxxx/zzzzzzzzz (this folder is in the steam folder not the steamapp folder.

xxxxxxxxx = a long number folder, might be more then 1 folder so check them all (i have 2 in my userdata, a 0 and a longer number)

zzzzzzzzz = the game's steam id number, the same one used in compatdata.

Also depending on the Games Engine you might have the boring task of searching your hard drive for Unity 3D Data and/or Unreal Engine Data.

Unity: should be {home}/.config/unity3d/
Unreal: should be {home}/.config/Epic/

Or just do a file search for the game's name, that might find some hidden folder somewhere.


Last edited by Rob-Retro on 20 May 2022 at 3:33 pm UTC
Raaben 20 May
Quoting: Rob-RetroThat normally works, but you could also check something has not got stuck in both steamapps/downloading and steamapps/temp folders, and last but not least have a look inside userdata/xxxxxxxxx/zzzzzzzzz (this folder is in the steam folder not the steamapp folder.

Didn't think of that last bit, but unfortunately still no go for me; there's no folder for the game at all there. I'm not too bummed since my cobbled together Lutris solution works but do hope this gets working properly.
Huh, I wonder what's actually the problem with Succubus x Saint that they would specifically mention it. It played just fine when I tested it with normal Wine. I guess some RPG Maker MV games still aren't well optimized? I just finished playing Celesphonia today and the CPU spikes was brutal for such a simple game running on an engine based on Chromium.
Regarding Final Fantasy XIV, one option for Linux users is the (perhaps a tad confusingly named) "XIVLauncher", a FOSS unofficial launcher project which has a Linux native version! It even has a helpful SteamDeck specific install guide - https://goatcorp.github.io/faq/steamdeck .

There are many neat features included in the launcher alone, plus it enables you to use the Dalamud plugin API and an in-game library of UI addons/mods if you so choose. I've been using it for many months now, since I returned to FFXIV and it has been a useful utility indeed. I can confirm its viability on desktop Linux but alas do not have a Steam Deck as of yet (I'm scheduled for Q2 so hopefully my time will be coming soon). Enjoy!
illumi_x3 23 May
I’ve gotten to the launcher but when I log in I get an “unable to complete version update 30436” error I tried using gedit to change the browser but that didn’t solve the issue anyone run into this ?
xellex727 25 May
Greetings all. I can confirm I get the error 30436 when trying to update game after logging in on Steam Deck. Anyone else had any success?
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