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Date:      Fri, 18 Dec 2020 15:06:58 +0000
From:      bugzilla-noreply@freebsd.org
To:        x11@FreeBSD.org
Subject:   [Bug 251836] x11-wm/plasma5-kwin: freezes with iris (Intel Gen8+)
Message-ID:  <bug-251836-7141-3w6Y66bZ4t@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-251836-7141@https.bugs.freebsd.org/bugzilla/>
References:  <bug-251836-7141@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D251836

--- Comment #30 from Jan Beich <jbeich@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 LLV=
M ;)
for Intel Gen8+ GPUs  (Broadwell and later). It has better compatibility and
sometimes better performance. For example, Persona 5 (under RPCS3) has mass=
ive
glitches with i965 but renders fine with iris. Other *modern* non-native ga=
mes
(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 f=
or me.

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

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