This appears when simply running "gzdoom" in terminal, same as in desktop launcher. Full launch log: ----------------------- $ gzdoom -h GZDoom <unknown version> - - SDL version Compiled on Jun 30 2019 M_LoadDefaults: Load system defaults. Cannot find gzdoom.pk3 ----------------------- Searching for solution, I found only this: https://github.com/coelckers/gzdoom/pull/377 from there https://aur.archlinux.org/packages/gzdoom/?comments=all From discussions it seems, gzdoom needs some config file, but I can't find any info about it. Nor even command line options list. "gzdoom -h" doesn't work (-h is just ignored as if not specified) Exact files list ($ qlist -e gzdoom | sort ): /usr/bin/gzdoom /usr/share/applications/gzdoom-gzdoom.desktop /usr/share/doc/gzdoom-4.1.3/console.css /usr/share/doc/gzdoom-4.1.3/console.html /usr/share/doc/gzdoom-4.1.3/README.md.bz2 /usr/share/doc/gzdoom-4.1.3/rh-log.txt.bz2 /usr/share/doom/brightmaps.pk3 /usr/share/doom/fm_banks/GENMIDI.GS.wopl /usr/share/doom/fm_banks/gs-by-papiezak-and-sneakernets.wopn /usr/share/doom/gzdoom.pk3 /usr/share/doom/lights.pk3 /usr/share/doom/soundfonts/gzdoom.sf2 /usr/share/doom/zd_extra.pk3 /usr/share/pixmaps/gzdoom.xpm
GZDoom should create a config file the first time it starts up; it'll should be located at ~/.config/gzdoom/gzdoom.ini Inside this file, you can configure the default search path for GZDoom: [FileSearch.Directories] Path=$HOME/.config/gzdoom Path=/usr/local/share/ Path=/usr/local/share/doom Path=/usr/local/share/games/doom Path=/usr/share/doom Path=/usr/share/games/doom Path=$DOOMWADDIR The Gentoo gzdoom-4.1.3 ebuild should have installed installed the pk3 files under /usr/share/doom, so let's first make sure that the gzdoom.pk3 is under that directory and that your gzdoom.ini file is configured with a PATH=/usr/share/doom line.
Thanks, I looked to that file - it was: [FileSearch.Directories] Path=~/.config/gzdoom Path=/usr/share/doom-data/ Path=$DOOMWADDIR It needed Path=/usr/share/doom/ like above block, to begin work (not replacing /usr/share/doom-data, some modes from gamerlay are placed into it).
It was old config file. After its removal next gzdoom run recreated it without any issues.