correct your main issue
MESA-LOADER: failed to retrieve device information
MESA-LOADER: failed to retrieve device information
MESA-LOADER: failed to retrieve device information
MESA-LOADER: failed to open kms_swrast: /usr/lib/dri/kms_swrast_dri.so: cannot open shared object file: Permission denied (search paths /usr/lib/arm-linux-gnueabihf/dri:$${ORIGIN}/dri:/usr/lib/dri)
failed to load driver: kms_swrast
MESA-LOADER: failed to open swrast: /usr/lib/dri/swrast_dri.so: cannot open shared object file: Permission denied (search paths /usr/lib/arm-linux-gnueabihf/dri:$${ORIGIN}/dri:/usr/lib/dri)
failed to load swrast driver
stop using multi-instance of MM² (by openning with a browser)
I have says you: MM² MUST display by itself and automaticaly
I can’t do anything for you
check your OS by example
maybe this wiki can help