lr-dolphin plugins issue

[satella]

CPU - intel i7-8650u
OS - Ubuntu 22.04

Hello. I installed lr-dolphin to use shader and overlay.
However, it won't lunch game. It seems like load game, but after few seconds of black screen, it goes back to menu.

Here is what log said

Executing: /opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-dolphin/dolphin_libretro.so --config /opt/retropie/configs/gc/retroarch.cfg "/home/pi/RetroPie/roms/gc/twilightprincess.iso" --appendconfig /dev/shm/retroarch.cfg
Couldn't open plugin directory: No such file or directory
No plugins found, falling back on no decorations
/opt/retropie/supplementary/runcommand/runcommand.sh: line 1313: 27496 Segmentation fault (core dumped) /opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-dolphin/dolphin_libretro.so --config /opt/retropie/configs/gc/retroarch.cfg "/home/pi/RetroPie/roms/gc/twilightprincess.iso" --appendconfig /dev/shm/retroarch.cfg

I have no idea what plugin directory is. I tried to find it, but google search didn't give me information.
I placed dolphin-emu folder in three place, because I don't know where is right location.

1. home/pi/BIOS
2. configs/all/retroarch/config
3. configs/all/retroarch/system

Regular dolphin works fine. It only happens on lr-dolphin.

Any idea or solution please?

[mitu]

Can you get a verbose log and post it on pastebin.com ?
I think the 'plugin' error is not from the core, but from RetroArch.

[satella]

@mitu I get two logs
https://pastebin.com/v5J2hVuy
https://pastebin.com/08aKeY8h

[mitu]

@satella This looks like a video driver switch which doesn't work. Did you set RetroArch's video driver to vulkan ?

EDIT: Try to set it to glcore.

[satella]

@mitu yes I did.
I tried with gl. It works. Thank you for giving me hint.

[mitu]

@satella You can still use vulkan for the other cores using your previous config by editing /opt/retropie/configs/gc/retroarch.cfg / /opt/retropie/configs/wii/retroarch.cfg. Add a line (near the beginning of the file) to set the gl / glcore video driver in the file with:

video_driver = "gl"

so that video driver is used only for the gc and wii systems.