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Re: DRM access rights

On 11/23/21 10:45 PM, Riccardo Mottola wrote:
Hi Matthew,

matthew green wrote:
how can I solve this? Usually it is the means of adding oneself to a
specific group, changing devfs, but found nothing of there like.
check the perms on /dev/dri/card0.  make sure your console
user has read/write access to it.

oh indeed, wheel had only "r", I added "w".
Now glxgears starts without complaining that, displays a half-broken gear and then will crash

i965: Failed to submit batchbuffer: Input/output error

wow! No wonder I cannot use WebGL in browsers, I think this needs to be solved first.

On my Intel 530:


OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.1.17
OpenGL core profile shading language version string: 4.50


it works fine - 'vblank_mode=0 glxgears' gives me about 570 fp/s when ran full screen, on a system from 22/11. Firefox 94.0.1 also works OK with WebGL - returns some 24 million triangles/sec.



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