protonscr

Men of War II

protonopen appid 1128860Game compatibility - Unofficial
ValveSoftware/Proton#9073 · opened 2025-09-28 by Patola · updated 2025-10-11 · 8 comments · github · game page · search this game
1 matching comments, n / p to jump
PPatola 2025-09-28 github

Compatibility Report

  • Name of the game with compatibility issues: Men of War II
  • Steam AppID of the game: 1128860

System Information

I confirm:

  • [X] that I haven't found an existing compatibility report for this game.
  • [X] that I have checked whether there are updates for my system available.

Symptoms

  • When starting the game, it shows splash screens and animations correctly. But when it gets to the part where it should be connecting to a server and showing a menu, it instead only shows a directory listing:
Image
  • The game also has a native version that is not working, and fails at the same stage but differently: it only shows a blue screen with "-6" on the upper-left corner.
  • In both cases, pressing Alt-F4 shows a dialog asking if we want to quit. Clicking ok works and exits the game:
Image
  • This behavior is on Desktop Linux. For some reason, the native version works out of the box on the Steam Deck.

Reproduction

  • Just start the game.

Attached are logs with Proton 9.0-4 and Proton 10.0 beta2

steam-1128860-proton10.log
steam-1128860-proton9.log

Notes

  • Also tried several different attempts, reinstalling from zero or cleaning the proton prefix between each attempt:
  • GE-Proton10-17
  • On native version, also tried running with Steam Linux Runtime 3.0 and Steam-Play-None
  • Tried the dxvk substitution suggested here: https://github.com/doitsujin/dxvk/issues/4438
  • Tried running in Xorg (icewm) and Wayland (KDE Wayland)
  • Tried running with gamescope
Ggofman 2025-10-10 github

This should work with the just updated Proton Experimental bleeding-edge Beta branch (https://github.com/ValveSoftware/Proton/wiki/Proton-Versions#proton-bleeding-edge).

PPatola 2025-10-11 github

Unfortunately it still didn't work here, the same -6 on the upper left side behavior as before. Here is the steam log:

steam-1128860.log

Latest experimental bleeding-edge.

Ggofman 2025-10-11 github

Eh, I wasn’t ever seeing any error -6, with or without the fix, I was seeing puzzling root directory listing instead of server connection exactly as described in the issue report and fixed the issue in lsteamclient responsible for that. Error -6 probably relates to native version where Proton is not involved.

PPatola 2025-10-11 github

Eh, I wasn’t ever seeing any error -6, with or without the fix, I was seeing puzzling root directory listing instead of server connection exactly as described in the issue report and fixed the issue in lsteamclient responsible for that. Error -6 probably relates to native version where Proton is not involved.

I know, it's the very same symptom of the native version. But you can see from the proton log of today that I sent that it's not the native version. The proton experimental string appears there too. And of course, the game is set this way:

Image

Then when it's like that:

Image

it's the windows version that's been running via proton:

Image
Ggofman 2025-10-11 github

The game opens locally stored web page through Steam interface. Before the fix that was failing with Proton due to Proton's lsteamclient's reasons. Now with that fixed that shows the same error as the native version. That 'error -6' is probably coming from Steam which cannot open that page for some reason (which I cannot immediately guess). Here both native and Window version (with fixed Proton) works... so something is different in your setup which triggers that error which would be interesting to know. Do you have anything special running Steam, like flatpak or else? As I a rather arbitrary guess, could you try with PROTON_SET_GAME_DRIVE=1 %command% launch options?

PPatola 2025-10-11 github

Tried PROTON_SET_GAME_DRIVE=1 %command% and nothing different happened. I have the normal steam package on arch, no flatpak or modified version in any way. My internet does not have anything special, maybe having ipv6 besides ipv4 but I think that's pretty common. In any fashion, I disabled ipv6 to see if it was interfering and still no change. I have a local intranet with 192.168.0.x and an external IP on my provider's modem.

Ggofman 2025-10-11 github

ipv6 is better to be enabled always, many games these daya depend on ipv6 per se been available locally even if the network / provider doesn't support it (that's the case on Windows).

We'll need some broader testing probably to narrow down the conditions which trigger this problem to make some sense of it (I couldn't repro on 2 different machines here). Could you please attach PROTON_LOG=+steamclient,+file,+path ? What if there is some clue, but I guess this specific issue, seemingly common to fixed Proton and native game version, is not Proton related.

PPatola 2025-10-11 github

steam-1128860.zip

Yes, thanks. Notice that I am still running the game with Proton Experimental bleeding-edge.

Proton versions

Launch options

Launch lines

Upstream links