[EMAIL PROTECTED] wrote:
> 
> 
> Kevin Brosius wrote:
> > [EMAIL PROTECTED] wrote:
> > > Kevin Brosius wrote:
> > > > [EMAIL PROTECTED] wrote:
> > > > > Having just upgraded my system from Mandrake 7.2 running the
> > > > > original XFree86 4.1.0 binaries to the XFree86 4.2.0 provided
> > > > > with Mandrake 8.2 (/ partition was reformatted for this upgrade)
> > > > > I now have a visual problem with the XFree86 display. The card
> > > > > in this machine (an IBM 300PL) is a S3 Trio 3D which identifies
> > > > > itself to XFree86 4.2.0 as:
> > > [snip]
> > > > > The left hand side and middle of the screen are fine, but the
> > > > > right hand side of the display is covered with multiple copies
> > > > > of a strip about 180 pixels wide taken from the middle of the
> > > > > screen and duplicated roughly three times (in 1280x1024
> > > > > resolution) on the right hand side of the screen.  Every
> > > > > application appears to be acting normally on this setup, the X
> > > > > server runs happily enough without errors in the
> > > > > /var/log/XFree86.0.log file.  This effect is not observed in
> > > > > 8bit colour but is seen in 15, 16 and 24bit colour
> > > > > depths. Moving to higher resolutions like 1400x1050 results in a
> > > > > similar effect with roughly five copies of that strip on the
> > > > > right hand side of the screen.
> > > >
> > > > A full log would be helpful.  I've seen a case where missing
> > > > monitor config and failing DDC caused something like this.
> > >
> [snip: config]
> >
> > If you place "1024x768" in the first position under Depth 16, does it
> > display cleanly at that resolution?  Do only the 1152x864 and 1280x1024
> > modes cause trouble with the right side banding?  Do you have any
> > documentation for the Trio 3D card which specifies the maximum memory
> > clock rate for your model?
> 
> Even with 1024x768, there is a stripe and a half on the right hand side
> of the screen. At least in 15, 16 and 24 bit colour - 8 bit is fine.
> 
> I've dug around my old documentation for this PC and drawn a blank on
> the specs for this card. However, I do note that the figures given in
> the XFree86 3.3.6 output differ from the 4.2.0 output.
> 
> For example, from 3.3.6:
> 
> (--) SVGA: PCI: S3 Trio3D rev 1, Memory @ 0xf4000000
> (--) SVGA: S3V: Trio3D rev 1, Linear FB @ 0xf4000000
> (--) SVGA: Detected S3 Trio3D
> (--) SVGA: using driver for chipset "s3_virge"
> (--) SVGA: videoram:  4096k
> (--) SVGA: Ramdac speed: 230 MHz
> (--) SVGA: Detected current MCLK value of 100.227 MHz
> (--) SVGA: chipset:  s3_virge
> (--) SVGA: videoram: 4096k
> (**) SVGA: Option "sw_cursor"
> (**) SVGA: Option "power_saver"
> (**) SVGA: Using 16 bpp, Depth 16, Color weight: 565
> 
> >From 4.2.0:
> 
> (--) S3VIRGE(0): Detected current MCLK value of 100.227 MHz
> (II) S3VIRGE(0): Monitor0: Using hsync range of 30.00-94.00 kHz
> (II) S3VIRGE(0): Monitor0: Using vrefresh range of 50.00-160.00 Hz
> (II) S3VIRGE(0): Clock range:  20.00 to 270.00 MHz
> 
> Am I right in thinking that the Clock range in the 4.2.0 output should
> not exceed the RAMDAC speed?
> 

Possibly, but I thought that printout refered to mclk and not ramdac
speed.  Not sure though.  I'll try and take a look over the weekend.

-- 
Kevin
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