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From: Jan Beich <jbeich@FreeBSD.org>
To: Manuel =?utf-8?Q?St=C3=BChn?= <freebsdnewbie@freenet.de>
Cc: freebsd-current@freebsd.org
Subject: Re: drm-next-kmod regression
References: <20180302164045.GA45988@freebsd-t420.fritz.box>
Date: Sat, 03 Mar 2018 06:24:55 +0100
In-Reply-To: <20180302164045.GA45988@freebsd-t420.fritz.box> ("Manuel
 =?utf-8?Q?St=C3=BChn=22's?=
 message of "Fri, 2 Mar 2018 17:40:45 +0100")
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Manuel St=C3=BChn <freebsdnewbie@freenet.de> writes:

> Hi,
> the last drm-next-kmod worked fine on my Lenovo T420 with i5-2520M and
> a HD Graphics 3000. After the update to the actual version (4.11) from
> ports, I'm seeing regression in form of a very slow xfce4-desktop. The
> slowness starts after some short time. Slow means for example that I
> can type faster than the terminal prints the chars or when i move
> windows they lag extremely behind the mouse's motion.
>
> One entry in Xorg.0.log caught my attention:
> [   128.266] (EE) intel(0): Failed to submit rendering commands (Bad
> address), disabling acceleration.

Did you build xf86-video-intel with SNA option enabled or have
Option "AccelMethod" "SNA" in xorg.conf? If so see also

https://github.com/FreeBSDDesktop/kms-drm/issues/32