[Bug 20236] font corruption with latest git

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=20236





--- Comment #21 from Andy Furniss <lists at andyfurniss.entadsl.com>  2009-03-23 08:31:21 PST ---
(In reply to comment #18)
> I've disabled gart transfers on r6xx/r7xx AGP cards:
> c0e2513ab128ddd5be0ed626d9e31777a98983ef
> 

I've noticed that although this fixes the issues with ati some web pages with
seamonkey take far too long to render and scroll very poorly (smooth scroll is
off).

An example page is 
http://redbutton.svn.sourceforge.net/viewvc/redbutton/redbutton-browser/trunk/

I can scroll OK as fast as I can go with the mouse wheel, but as soon as I use
the scroll bar to get to the bottom quickly it pauses and takes a while to
render, then pause again, renders ... until I get to the bottom.

Switching metacity work spaces to (and from partially) is also very slow.
At 1024x768 it takes a second to render the screen and a further second for the
contents of the previous workspace to be cleared. At high res it's 3+3 seconds
and  when switching away from that workspace it still delays the metacity
graphic that shows which workspace you are on from being cleared.

These issues do not happen if I use xorg vesa driver (which FWIW currently
doesn't manage to set up mtrr for me).

Top shows CPU being eaten by Xorg, oprofile shows libc memcopy.


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