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Date:      Fri, 07 Apr 2023 12:34:36 +0200
From:      Jan Beich <jbeich@FreeBSD.org>
To:        Oleksandr Kryvulia <shuriku@shurik.kiev.ua>
Cc:        x11@freebsd.org
Subject:   Re: suspend-resume and dri driver
Message-ID:  <edow-vv43-wny@FreeBSD.org>
In-Reply-To: <972c5100-823f-5af7-e1e7-d6ee59edaeb4@shurik.kiev.ua> (Oleksandr Kryvulia's message of "Fri, 7 Apr 2023 09:17:59 %2B0300")
References:  <972c5100-823f-5af7-e1e7-d6ee59edaeb4@shurik.kiev.ua>

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Oleksandr Kryvulia <shuriku@shurik.kiev.ua> writes:

> Hi
> After suspend-resume on my Thinkpad T490 dri driver fallbacks to swrast.
>
> On system boot:
> % xdriinfo
> Screen 0: iris
>
> After suspend-esume:
> % xdriinfo
> libGL error: failed to authenticate magic 1
> libGL error: failed to load driver: iris
> Screen 0: swrast

Maybe caused by https://github.com/freebsd/drm-kmod/issues/175
Neither Xwayland (X11) nor wlroots (Wayland) are affected.

Note, FreeBSD (unlike Linux and OpenBSD) runs Xorg (unlike anything
Wayland-related) as root (via setuid) which may affect how DRM
authentication works.



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