Assassin's Creed Brotherhood
Hello @Cheaterman, this looks like a line of interest from the log: [1211/174928.064:ERROR:mf_helpers.cc(14)] Error in dxva_video_decode_accelerator_win.cc on line 379
Thanks a lot for your answer @kisak-valve - but to be honest I'm not quite sure I can act upon it, AIUI dxva is a DirectX video decoding API, like vaapi/vdpau here on Linux? It sure would explain why the game crashes while playing the intro video, but do you think there are packages I should install on my system to help address this?
Okay, FWIW I get the exact same issue with 5.0-10 so I suspect there is indeed something wrong with my system somehow.
Good news - sort of : the game works after rebooting my machine. Likely nothing to do with the game or Proton itself, more of an issue with vaapi/vdpau/nvidia and (I suspect) s2ram or general DPM.
EDIT: (And as usual, I nuked my profile in the process, losing my savegame. Bad habits die hard, haha.)
FYI: One mission in this game breaks, if the FPS is >60 (The mission with Leonardo's Flying Machine). FPS>60 cause the physics to break.
This can be fixed by setting the following launch options: DXVK_FRAME_RATE=60 %command%
When trying to launch the game with Proton 7.0-4 or Proton Experimental (2022/09/30) it hangs on the Ubisoft Launcher "Update checking" window. Tried to set PROTON_NO_FSYNC=1, but not success. The only solution was to add the parameter -playoffline.
Specs:
- O.S: Arch Linux
- Kernel: 5.19.13
- GPU: RX 6700 XT 12 GB (Mesa 22.1.7)
- CPU: Ryzen 7 5700G 3.8 -> 4.4
Logs: steam-48190.tar.gz
Game still hangs on Ubisoft launcher update for Proton 8.0-1 as well (only works using the parameter described above).
Log file:
steam-48190.tar.gz
Line of interest ?
2074.039:014c:0150:err:ole:marshal_object Failed to create an IRpcStubBuffer from IPSFactory for {e89f726e-c4f4-4c19-bb19-b647d7fa8478} with error 0x80004002
Specs:
- O.S: Arch Linux
- Kernel: 6.1.24
- GPU: RX 6700 XT 12 GB (Mesa 23.0.2)
- CPU: Ryzen 7 5700G
Replying to https://github.com/ValveSoftware/Proton/issues/4458#issuecomment-1512040112
The launcher defunct and no longer updates.
Using -playoffline no longer works, ubisoft connect is needed.
folks, this is probably not Proton's fault, but just wanted to report that the bundled UbisoftConnectInstaller for this game is outdated and comes with a bug that prevents the game to launch (tested with Proton 9.0-4, 10.0 beta and Experimental). I wasn't able to find out the issue until I removed the "silent" flag from the installer script in 48190_install.vdf (then a popup informs that you don't have enough disk space). Replacing the bundled installer by the latest, and removing the prefix solves the issue.
Proton versions
proton 9.0-4x1 2025-06proton 8.0-1x1 2023-04proton 7.0-4x1 2022-10proton experimentalx1 2022-10proton 5.13-4x1 2020-12
Launch options
PROTON_NO_FSYNC=1`,x1 2022-10DXVK_FRAME_RATE=60x1 2022-02
Launch lines
DXVK_FRAME_RATE=60 %command%x1 2022-02
Error codes
0x80004002x1 2023-04
Compatibility Report
System Information
I confirm:
Logs:
https://gist.github.com/54cda122887de0c0d06bcc5b965c336a
Note the ntlm_auth bit - I do have ntlm_auth:
Symptoms
Game crashes to desktop about one second into the Ubisoft intro video. It used to work on previous 5.13 release.
Reproduction
Install the game, start it on Proton 5.13-4. Do note I already disabled Steam overlay for this game as others have reported conflicts. I disabled Uplay overlay as well.