Stellaris stopped working under Ubuntu Lunar after latest Steam update

[mgajda]

Compatibility Report

• Name of the game with compatibility issues: Stellaris
• Steam AppID of the game: 281990

System Information

• GPU: AMD Radeon 6800
• Driver/LLVM version: 15.0.7
• Kernel version: 15.0.7
• Link to full system information report as Gist:
• Proton version: 7.0-6

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

Today, after the latest Steam update, I cannot start the game any more. Neither game proper, not the Paradox launcher.

It looks like if a reaper process cannot be started any more:

GameAction [AppID 281990, ActionID 1] : LaunchApp changed task to SynchronizingCloud with ""
GameAction [AppID 281990, ActionID 1] : LaunchApp changed task to SiteLicenseSeatCheckout with ""
GameAction [AppID 281990, ActionID 1] : LaunchApp changed task to CreatingProcess with ""
GameAction [AppID 281990, ActionID 1] : LaunchApp waiting for user response to CreatingProcess ""
GameAction [AppID 281990, ActionID 1] : LaunchApp continues with user response "CreatingProcess"
/bin/sh\0-c\0/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=281990 -- /home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/steam-launch-wrapper -- '/home/m/snap/steam/common/.local/share/Steam/steamapps/common/Stellaris/dowser'\0
Game process added : AppID 281990 "/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=281990 -- /home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/steam-launch-wrapper -- '/home/m/snap/steam/common/.local/share/Steam/steamapps/common/Stellaris/dowser'", ProcID 32477, IP 0.0.0.0:0
chdir /home/m/snap/steam/common/.local/share/Steam/steamapps/common/Stellaris
GameAction [AppID 281990, ActionID 1] : LaunchApp changed task to WaitingGameWindow with ""
GameAction [AppID 281990, ActionID 1] : LaunchApp changed task to Completed with ""
ERROR: ld.so: object '/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/m/snap/steam/common/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
ERROR: ld.so: object '/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Game process removed: AppID 281990 "/home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=281990 -- /home/m/snap/steam/common/.local/share/Steam/ubuntu12_32/steam-launch-wrapper -- '/home/m/snap/steam/common/.local/share/Steam/steamapps/common/Stellaris/dowser'", ProcID 32477 Problems after most recent Steam client update:

The game ran flawlessly two days ago.

Reproduction

I am running it on Ubuntu Lunar (latest beta for April 2022 release):

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Lunar Lobster (development branch)
Release: 23.04
Codename: lunar

I am using standard Ubuntu on Wayland environment.

The same problem occurs in X.org. Upgrading to Steam Client Beta does not help.

So the problem will become relevant to most Ubuntu users within a month.

[kisak-valve]

Hello @mgajda, /home/m/snap/steam/common/.local/share/Steam/steamapps/common/Stellaris/dowser is the Linux native variant of this game. Proton is not involved.

In general, this feedback should go to the game's devs because it's for the Linux native version of the game. Secondarily, the Steam in Snap package maintainer(s) might be interested in hearing about this issue as well.

Out of mild curiosity, are you able to reproduce this issue without Ubuntu's snap packaging being involved?