[Bug 217664] [DRI3] OpenGL applications crash in brw_workaround_depthstencil_alignment()

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217664

--- Comment #7 from Matthew Rezny <rezny at freebsd.org> ---
(In reply to Sergei Akhmatdinov from comment #2)

>> Are you using i915.ko or i915kms.ko? If the latter try the kernel from 
>> https://github.com/FreeBSDDesktop/freebsd-base-graphics/tree/drm-next but 
>> ignore world
>>
>I am using the former.

You should be using the latter. The former only supports DRI1 and UMS. The
latter is required for DRI2 and KMS. While there is still UMS support in the
intel DDX, it is only intended for use on very old hardware for which there is
no KMS support, i.e. i8xx chipsets.

If you are manually loading i915.ko, cease doing so. Intel DDX will try to load
i915kms.ko first and only tries i915.ko if the first fails (or you are not on
the current version as there was a bug that would cause it to try loading
both).

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