Hello @BinaryJava, please copy your system information from steam (Steam -> Help -> System Information) and put it in a gist, then include a link to the gist in this issue report. Additionally, please add PROTON_LOG=1 %command% to the game's launch options and drag and drop the generated $HOME/steam-$APPID.log into the comment box.
I added the launch command and the graphics setup menu appeared, I configured it but after it closed the game still won't open. I cannot find a steam-$9450.log file anywhere on my system, I have enabled hidden files and searched from /
Ultimate doom also crashes on my system, although it opens two windows first.
Edit: After adding the launch option ultimate doom runs even when I remove it
Somebody on the steamcommunity forums has fixed it for me, by adding this to launch options: WINEPREFIX=$STEAM_LIBRARY/steamapps/compatdata/9450/pfx
WINEPREFIX=$STEAM_LIBRARY/steamapps/compatdata/9450/pfxx1 2018-08PROTON_LOG=1x1 2018-08
Running ubuntu 18.04 with a GTX 1080ti and nvidia driver 396.54. Driver has been reinstalled and system restarted.
System info: https://gist.github.com/BinaryJava/e51030a50989f5a16b307d4358268987