So far I have tried different env variables, but not the ones you proposed. I am using this startup script, to which I change variables all the time. #!/bin/bash export CIN_EDITOR=kate export CIN_CONFIG=$HOME/.bcast6 MESA_LOADER_DRIVER_OVERRIDE=radeonsi_dri.so # MESA_VK_DEVICE_SELECT_FORCE_DEFAULT_DEVICE=1 MESA_VK_DEVICE_SELECT="vid:did" RADV_PERFTEST=video_decode,video_encode /home/paz/cinelerra5/cinelerra-5.1/bin/./cin The last test was with: MESA_LOADER_DRIVER_OVERRIDE=radeonsi_dri.so But it doesn't change anything. It's probably the one that's active by default. With: radeonsi_no_infinite_interp radeonsi_clamp_div_by_zero radeonsi_zerovram AMD_DEBUG=nodcc (nodisplaycdd) (noefc) (nohyperz) Nothing changes. After Georgy said the warning comes up with wayland, maybe it started with KDE6, which integrates wayland by default. But I'm not sure.