[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 #42 from Andre Albsmeier <mail@fbsd2.e4m.org> ---
I didn't have the module section so I added it. glx was apparently loaded
by default already:

(II) "glx" will be loaded. This was enabled by default and also specified in
the config file.

glamoregl is being loaded now but doesn't help. I added

        Option      "AccelMethod"    "glamor"

and received an addtional

(**) modeset(0): Option "AccelMethod" "glamor"

but this doesn't help as well. And

(WW) modeset(0): Option "DRI" is not used

remains. I checked "static const OptionInfoRec Options[]" in
xorg-server-21.1.14/hw/xfree86/drivers/modesetting/driver.c
and didn't find any mention of a DRI option. I fetched the official xorg-server
pkg but this didn't change anything. I did

strings -n 3 modesetting_drv.so | grep -E 'Atomic|DRI

and it returned only "Atomic" as a standalone string.

I tried all of your config stuff (as long as it seemed reasonable) and had
a 90 degrees turned output :-) but no accel mode after VT-switch.

Which xorg-server do you use? An official pkg or selfmade from ports?

Would you mind uploading your Xorg.log somewhere? Maybe I find something
compared to mine...

It could also be that it doesn't work with my "crocus" device as you have
"iris". But this wouldn't explain why I get an "Option "DRI" is not used".

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