Bug#697727: xserver-xorg-video-radeon: [radeon] Scrolling in xterm slow with KMS
On Die, 2013-01-08 at 23:20 +0100, Tilo Schwarz wrote:
>
> Scrolling in an x-term is much slower than before (it is clearly
> noticeable by eye).
>
> Investigation shows, that scrolling is about 5 times slower when KMS is on.
>
> A "time seq 100000" takes about 12 seconds with
> "options radeon modeset=1" in /etc/modprobe.d/radeon-kms.conf.
>
> A "time seq 100000" takes about 2-3 seconds with
> "options radeon modeset=0" in /etc/modprobe.d/radeon-kms.conf.
>
> xterm and rxvt show the same effect.
[...]
> [ 56.923] (II) RADEON(0): KMS Color Tiling: enabled
Sounds like https://bugs.freedesktop.org/show_bug.cgi?id=34486
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Debian, X and DRI developer
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