drm-next-kmod regression

[Jan Beich]

Manuel Stühn <freebsdnewbie at 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