Bug#697727: xserver-xorg-video-radeon: [radeon] Scrolling in xterm slow with KMS

[Michel Dänzer]

On Don, 2013-01-10 at 10:14 +0100, Tilo Schwarz wrote: 
> On Thu, 10 Jan 2013 09:16:37 +0100, Michel Dänzer <daenzer at debian.org>  
> wrote:
> 
> > On Mit, 2013-01-09 at 20:01 +0100, Tilo Schwarz wrote:
> >>
> >> Indeed, using
> >>
> >> % grep ColorTiling /etc/X11/xorg.conf
> >>          Option          "ColorTiling"   "off"
> >>
> >> the scrolling is twice as fast as without this option (from 12sec down  
> >> to
> >> 6sec). That is still almost three times slower than without KMS, but
> >> already much more usable!
> >
> > The better solution would be to configure your terminals to use
> > fontconfig/Xft for text rendering.
> 
> Do you have a link to "the correct debian way" to enable fontconfig/Xft  
> for text rendering? (Me being no X11 expert ...)

It's app/toolkit specific. E.g. with xterm you can enable it with -fa
and related options.


> Is it a fontcontig and Xft, or is it a either fontcontig or Xft?

It's mainly about Xft. Most users of that also use fontconfig for
selecting the fonts to use, but that's not required.

Most apps/toolkits have used the modern text rendering infrastructure by
default for a long time, but a lot of terminal emulators are still
holding out for some reason.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer