Subject: Re: How eliminate video artifacts while drawing?
From: Dick Benster (ribenster@home.net)
Date: Mon Aug 30 1999 - 10:31:51 MDT
Correction to the below, the desired Modeline Y resolution after the comment
line should be 870 not 864:
# 1152x870 @ 75 Hz, 7x.y kHz hsync
Modeline "1152x870" a b c d e f g h i (whatever these should be)
Thanks,
Dick Benster
> 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