radeon/r128 patches

[David Stanaway]

Hi,
The problem seems to be restricted to 1600x1200 resolution with my
monitor (21" Blueberry studio display). I get the interference (Diagonal
rain offset from white areas) with dda2_on_off shifted 16 17 and 18
bits.  18 bits is the best. I get the same with dual head, or single
head external.

When I drop the resolution down to 1280x1024 it works fine.

I have tried 85Hz, 75Hz and 70Hz modelines for 1600x1200 (The monitor is
capable of 85Hz).

My eyes are actually better off at 1280x1024 anyway, and the scale is
more comparable with 1152x768 on the LCD anyway so it is no biggy. It
could just be the monitor (I will see if it repeats with my Sony E500 at
work).

On Mon, 2004-12-20 at 16:44 -0500, Alex Deucher wrote:
> On Mon, 20 Dec 2004 13:48:56 -0600, David Stanaway <david at stanaway.net> wrote:
> > On Mon, 2004-12-20 at 13:33 -0600, David Stanaway wrote:
> > > On Sat, 2004-12-18 at 14:10 -0500, Brian Victor wrote:
> > >
> > > > I am getting a lot of artifacts on the external display.  They look like
> > > > vsync problems, but the syncs I'm setting in xorg.conf are exactly what
> > > > ViewSonic says the monitor accepts.  xvidtune only wants to manipulate
> > > > the lcd, so I don't know what I can do to fix that.  But I'm assuming
> > > > the artifacts are due to something I'm doing wrong rather than a driver
> > > > bug.
> > >
> > > I am getting this also, I had thought it was just me needing to tweak
> > > with xvidtune running single head on external display to tweak, but
> > > sounds like it is a common thing. I get a bit of horizontal snow top
> > > left to bottom right, about 15 degrees.
> > 
> > 
> > My driver was built with:
> > R128InitDDA2Registers :: save->dda2_on_off = (Ron << 18) | Roff;
> > 
> 
> try replacing the 18 with 17 or 16.

-- 
David Stanaway <david at stanaway.net>