Dedicated issue for futex2-specific problems

[Plagman]

If an issue happens when running Proton Experimental against a kernel that has both futex2 and FUTEX_WAIT_MULTIPLE, and stops happening when setting WINEFSYNC_FUTEX2=0, please post it here.

[NoXPhasma]

One Finger Death Punch 2 (980300) won't launch with Futex2 enabled. It would spawn an invisible window and hangs there. When I disable Futex2 it's starting fine.

steam-980300.log

[kodatarule]

Killing Floor 2 (232090) refuses to go past the splash screen so I have to manually stop/kill the process.
steam-232090.log
Grand Theft Auto V (271590) can't go past "Connecting to Rockstar Social Club" it just hangs there and I have to manually kill the process
steam-271590.log

[NoXPhasma]

Generation Zero (704270) starts fine to the main menu with Futex2 but hangs once you load a game. Instead of showing the world, it hangs either in the loading screen or a black screen. Audio keeps playing and I need to force kill it.

Without Futex2 it runs just fine.

steam-704270.log

[kodatarule]

Call Of Duty World At War (10090) main menu is fine, but once you load a level it just hangs on black screen, same for Multiplayer.
steam-10090.log
EDIT: Risk Of Rain 2 (632360) hangs on a black screen.
steam-632360.log

[kakra]

Elite Dangerous: Launcher doesn't seem to load its web content until the game is started, the game itself shows only a black screen (but intro sound and menu sound can be heard)

Titles using Origin Launcher (tested: Mirror's Edge Catalyst, Mass Effect: Andromeda): Launcher cannot correctly download/update itself, the process is either slow or eventually locks up, animations only run while moving the mouse on the window or turning the mouse wheel on the window, games itself seem to run just fine if the launcher doesn't want to update itself

Titles using Uplay Launcher (tested: AC:Odyssey, AC:Origin, AC:Unity): Launcher cannot update itself, it hangs trying to connect to servers but this seems not to be an exclusive futex2 issue, often it needs serveral launches until the connection is successful, however, with futex2, that always seems to fail. Games itself launch just fine if the launcher doesn't try to update itself.

Titles using Rockstar launcher (test: RDR2): Cannot connect to Rockstar online services, without futex2, the launcher connects just fine and the game starts.

Borderlands 3: Initial shader loading screen (walking robot) works but the game launches with an invisible/transparent window (holding an old copy of whatever screen content has been there on the desktop), sound sometimes starts playing but the game won't launch (it probably hangs at the Borderlands logo when trying to connect to servers).

Ori series (Blind Forest, Will of Wisps): Game launches a black screen, nothing happens. Usually, the game would load/compile shaders at that point, then start sound. But nothing happens.

[Ross-Carran]

Gloomhaven(780290) Hangs on a black screen doesn't load.
steam-780290.log

Star Renegades(651670) Hangs on a black screen doesn't load.
steam-651670.log

Ashes of the singularity: Escalation(507490)
launcher loads into a invisible window, the play button is undetectable even you scroll over where it should be. When taking a picture with Prtscr the window became visible, but the buttons were not select-able.
Had to hit stop in steam for the launcher to exit. (force quit)
steam-507490.log

Any games listed here have been tested with:
WINEFSYNC_FUTEX2=0 works
WINEFSYNC_FUTEX2=1 fails
kernel 5.11rc5
patched with
0001-futex-resync-from-gitlab.collabora.com.txt
0002-futex2-resync-from-gitlab.collabora.com.txt

[NoXPhasma]

Ultimate Epic Battle Simulator (616560) freezes one second after the window opens when the Unity logo is shown. Works fine without Futex2.

steam-616560.log

[pingubot]

Ubisoft Connect starts fine. The Far Cry 5 (552520) process is starting showing the splash screen, but the game window is not showing up afterwards (the process is still there using 100% cpu, so one core). Works fine disabling futex2.

steam-552520.log

[kakra]

Well, I found that "Ubisoft Connect" (or rather the older Uplay) may hang when it tries to update itself (not futex2-specific). But it's usually enough to run protontricks -s APPID uplay to get it going: It complains that uplay is already up to date, then it launches it and it's then able to update itself. After this, "Ubisoft Connect" will launch the game successfully. I still need to retest the games, tho, which I couldn't because of this problem.

[Melorn366]

Warframe (steamlog-230410. log) and Battlefield 1 (steam-1238840.log) not launching when futex 2 is being used (in both cases the launcher crashes, when futex2 interface patched kernel is being used along with fsync). Can be reproduced with proton experimental.
steam-230410.log
steam-1238840.log

Anomaly with gamescope and esync

When just esync is being used (with proton experimental using gamescope), randomly the gpu usage get 100% along with 100% CPU usage. It happens total randomly. The game becomes unstable and stutters a lot !

[Galcian79]

Killing Floor 2 (232090) refuses to go past the splash screen so I have to manually stop/kill the process.
steam-232090.log
Grand Theft Auto V (271590) can't go past "Connecting to Rockstar Social Club" it just hangs there and I have to manually kill the process
steam-271590.log

I don't have GTAV issue, is there a way to check if futex2 is actually running on my system?

[aeikum]

A possible futex2 issue was reported here: #167 (comment)

[alosarjos]

So, it's not a game thing, but gnome-shell crashed and I see some futex things on the core dump. Would prefer if you guys could tell me if it's a futex error before reporting the issue to gnome devs.

gnome_crash.log