[Bug 267915] x11-wm/mutter: after graphics/mesa-* 21.3.8 -> 22.2.3 update OpenGL compositing fails on Intel Iris Pro

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267915

--- Comment #44 from steveh <stevehso51@gmail.com> ---
Recreated on freebsd 14.2-RELEASE on a thinkpad X201 using intel integrated
graphics.

Procedure to recreate.

$ uname -a
FreeBSD  14.2-RELEASE-p1 FreeBSD 14.2-RELEASE-p1 GENERIC amd64

I force installed the latest version of drm-61-kmod (yesterday) before running
the test.

Boot the machine and start X11 desktop.  Open an xterm and run
$ glxinfo -B | grep -i accel
    Accelerated: yes

Manualy switch to a different VT, then switch back to the X11 session, and
repeat the above command.

$ glxinfo -B | grep -i accel
    Accelerated: no
failed to load driver: crocus
failed to authenticate magic 1
failed to load driver: crocus
...

Conclusion: VT switch still causes loss of accelerated video driver.  The bug
is still present.

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