Usually when I get a new SBC one of the things I like to try out is to test the GPU. Usually I start with running glxinfo, but I’m get the error:
$ glxinfo
name of display: :0.0
Error: couldn't find RGB GLX visual or fbconfig
Is there anything that I can use to test the GPU? I can see the driver option when I reconfigured the kernel, but somehow after reconfiguring I can’t seem to find anything that suggests the GPU exists.
The GPU in the VF2 doesn’t support OpenGL, it does support EGL and GLES2 though. You can use the es2gears_x11 (or es2gears_wayland) demos to test the GPU.
You can also prepend the commandline with vblank_mode=0 to run unconstrained by vsync, eg vblank_mode=0 es2gears_x11 within an X session