libEGL warning: failed to open /dev/dri/renderD128: Permission denied

The following warnings appear when running mujoco environments on a headless machine using egl. I’ve set the MUJOCO_GL environment variable to egl using the export MUJOCO_GL=egl command.

libEGL warning: failed to open /dev/dri/renderD129: Permission denied libEGL warning: failed to open /dev/dri/renderD129: Permission denied libEGL warning: failed to open /dev/dri/renderD128: Permission denied libEGL warning: failed to open /dev/dri/renderD128: Permission denied

As they are warnings not errors, the program terminates normally, but it feels a bit slow. #209 seems to have solved a similar problem by using the nvidia/cudagl image, but I’m using a real machine not a virtual one, so the solution cannot be applied directly.

Any help would be greatly appreciated.

[bitsandscraps]

If you have full control (i.e. root privileges) on this machine, it might simply be a matter of correcting the permissions on /dev/dri/renderD129 (usually by adding your user to the group that owns the device).

After adding myself to the group, the warning messages changed to

libEGL warning: DRI2: failed to create dri screen libEGL warning: DRI2: failed to create dri screen libEGL warning: DRI2: failed to create dri screen libEGL warning: DRI2: failed to create dri screen

[bitsandscraps]

libnvidia-gl-470-server works like magic! Thanks a lot.