Subject: Re: How eliminate video artifacts while drawing?
From: Dick Benster (ribenster@home.net)
Date: Mon Aug 30 1999 - 10:10:09 MDT
Dan,
I am not using "No Video Driver" (mine won't boot with this option). I tried
using the kernel arguments
video=atyfg:vmode:18,cmode:32
but this has no effect (same problem regardless of whether specify video arg
on kernel line).
One thing I don't understand is in /etc/X11/XF86Config
under the Section "Screen" Subsection "Display" when it is given the Modes
"1152x864"
if this mismatch (versus 1152x870) causes a problem.
Another thing I'm clueless about is how to set the standard mode timings so
instead of
# 1152x864 @ 78 Hz, 70.8 kHz hsync
Modeline "1152x864" 110 1152 1240 1324 1552 864 864 876 908
we'd instead have some entry that matches more exactly
# 1152x870 @ 75 Hz, 7x.y kHz hsync
Modeline "1152x864" a b c d e f g h i (whatever these should be)
Could our problem stem from a mismatch of the horizontal timing and vertical
resolutions?
Any thoughts/clues about this? Thanks for your time.
Dick Benster
La Honda Software
Dan Burcaw wrote:
> > Greetings, Dick Benster at ribenster@home.net! On 30.8.99 8:49 am, you
> > wrote:
> >
> > >Hi,
> > >
> > >I'm running YDL Champion 1.1 with KDE on a standard 1998 beige
> > >PowerMac
> > >300Mhz G3 Mini Tower e with 6MB on-board SGRAM video memory.
> > >I get lots of transient horizontal white lines while doing graphics, for
> > >instance
> > >simply dragging a window around, although the picture is correct once
> > >the dragging
> > >and drawing is complete. The above system has no such problems when
> > >running
> > >MacOS or MacOSX Server.
> >
> > Oddly enough, I'm having the same problems with a beige G3 MT/266, using
> > both an Apple Studio Display 17" monitor as well as with a generic 17"
> > multisync monitor (both via a VGA adapter). This also happens with YDL
> > 1.0, YDL 1.1, LinuxPPC R4.1 and LinuxPPC 1999, in all cases running at
> > 1024x768@24 or higher. So it would seem to be a general problem with the
> > X server for the ATI card, right?
> >
> > btw My video performance has improved drastically since I installed YDL
> > 1.1 (I ended up doing a fresh install--the update screwed up some
> > things). It still isn't quite as fast in the MacOS, but it's pretty good
> > now--before it was abysmal, despite a lot of fiddling with XF86Config and
> > so on.
> >
>
> > Anyway, hope Dan can pull some more rabbits out of his hat. ;-)
>
> Uh oh.. well, the question I have is are you both using "No Video Driver"
> That would account for the crappy video. If not, have you tried various
> video mode settings? (see the back of our 1.1 manual_
>
> >
> > Speaking of ATI, when are we going to see their Linux support? I heard
> > that they were going to open up their drivers somewhere...
>
> No, they are just getting the proper documentation to certain external
> developers :)
>
> >
> > cya
> >
> > John
> >
> >
> >
> > John Grantham | Independent Web Designer
> > | Dipl.-Designer (FH)
> > | Homepage: http://surf.to/multimedia
> > | MacLinux: http://www.maclinux.de/
> >
> >
>
> Dan
>
> Yellow Dog Linux for Apple G3 and PowerPC
> email: dburcaw@yellowdoglinux.com
> website: http://www.yellowdoglinux.com/
This archive was generated by hypermail 2a24 : Sun Sep 05 1999 - 13:46:33 MDT