[Bug 251836] x11-wm/plasma5-kwin: freezes with iris (Intel Gen8+)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251836

--- Comment #30 from Jan Beich <jbeich at FreeBSD.org> ---
(In reply to Guido Kollerie from comment #26)
> UHD 620 is not a Iris class GPU

iris is also the name of Gallium-based OpenGL driver (still doesn't use LLVM ;)
for Intel Gen8+ GPUs  (Broadwell and later). It has better compatibility and
sometimes better performance. For example, Persona 5 (under RPCS3) has massive
glitches with i965 but renders fine with iris. Other *modern* non-native games
(under Wine, linuxulator, emulators) maybe affected as well.

Note, Gen12+ (Tigerlake and later) doesn't support i965 per
https://gitlab.freedesktop.org/mesa/mesa/-/commit/107c22945fdc

(In reply to Roman from comment #28)
> If I create this file in ~/.drirc, then for some reason it did not work for me.

Maybe kwin_x11 is run under different user such as root. I already removed KDE,
so can't check.

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