[Bug 217886] xorg fails to init GL on stable/11 because of a devel/libdevq bug(?)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217886

--- Comment #11 from Jan Beich (mail not working) <jbeich at FreeBSD.org> ---
(In reply to Matthew Rezny from comment #8)
> What kernel are you running?

drm-next (c2af518bfd1) merged with /head at r316260 with some minor hacks like bug
206711 on amd64. GPU is Skylake GT2 which is supported by i965.

> DRM_MAJOR has been defined as 0 the entire time libdevq was used.

drm-next probably changed how drm is initialized which affects dev_t value.
According to major(3) manpage it no longer can be used to identify devices
classes. I don't remember when exactly major/minor was dropped but probably
around the same time devfs was introduced.

> How do you have 3?

I don't know, probably specific to my hardware, kernel configuration, etc.
DRM_MAJOR rarely dropped to 1, it was mostly 2 or 3. I didn't care until ports
r433862 moved libdevq logic to libdrm and broke my setup.

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