Re: [lkml]Re: Matrox G400 Dualhead

Re: [lkml]Re: Matrox G400 Dualhead

[James Simmons]

>If I use X on an accelerated, normal Matrox screen, my monitor complains
>on exit:
>
>fH 49.4 KHz, fV 39.8 Hz
>
>(and it doesn't sync at 40 Hz vertical refresh :-( ).
>
>This is _half_ of the normal 80 Hz. Using fbset -a "1600x1200-80" before
>X, of after X, doesn't do anything. Does anybody know what to hack out
>in X to get it to _not_ reset my G400 to some unusable state? 3.3.6 was
>didn't do this. I can use the framebuffer-screen just fine, but I miss
>the DGA extension.

Try adding this to your XF86Config file:

Section "Device"
...
Option UseFBDev
...
EndSection


MS: (n) 1. A debilitating and surprisingly widespread affliction that
renders the sufferer barely able to perform the simplest task. 2. A disease.

James Simmons  [jsimmons@linux-fbdev.org]               ____/|
fbdev/console/gfx developer                             \ o.O|
http://www.linux-fbdev.org                               =(_)=
http://linuxgfx.sourceforge.net                            U
http://linuxconsole.sourceforge.net

Re: [lkml]Re: [lkml]Re: Matrox G400 Dualhead

[thunder7]

On Sun, Apr 01, 2001 at 07:40:36AM -0700, James Simmons wrote:
> 
> >If I use X on an accelerated, normal Matrox screen, my monitor complains
> >on exit:
> >
> >fH 49.4 KHz, fV 39.8 Hz
> >
> >(and it doesn't sync at 40 Hz vertical refresh :-( ).
> >
> >This is _half_ of the normal 80 Hz. Using fbset -a "1600x1200-80" before
> >X, of after X, doesn't do anything. Does anybody know what to hack out
> >in X to get it to _not_ reset my G400 to some unusable state? 3.3.6 was
> >didn't do this. I can use the framebuffer-screen just fine, but I miss
> >the DGA extension.
> 
> Try adding this to your XF86Config file:
> 
> Section "Device"
> ...
> Option UseFBDev
> ...
> EndSection
> 
A very neat trick. X can now be ended correctly. Unfortunately, any
scrolling on any VT afterwards gives me a corrupted screen - parts of
the screen from other VT's are inserted below, or over the cursor
position, and at 'half-line' intervals. In typing this email, I've seen
it 5 times already.
I'm willing to test anything - but the corruption is alway gone after I
switch VT's. So getting a screendump is not easy.

Thanks!

Jurriaan
-- 
Send lawyers, guns, and money,
The shit has hit the fan.
        Warren Zevon
GNU/Linux 2.4.2-ac28 SMP/ReiserFS 2x1743 bogomips load av: 0.98 0.54 0.21

Re: [lkml]Re: [lkml]Re: Matrox G400 Dualhead

[James Simmons]

> > >If I use X on an accelerated, normal Matrox screen, my monitor complains
> > >on exit:
> > >
> > >fH 49.4 KHz, fV 39.8 Hz
> > >
> > >(and it doesn't sync at 40 Hz vertical refresh :-( ).
> > >
> > >This is _half_ of the normal 80 Hz. Using fbset -a "1600x1200-80"
> > >before X, of after X, doesn't do anything. Does anybody know what to
> > >hack out in X to get it to _not_ reset my G400 to some unusable
> > >state? 3.3.6 was didn't do this. I can use the framebuffer-screen
> > >just fine, but I miss the DGA extension.
> >
> >Try adding this to your XF86Config file:
> >
> >Section "Device"
> >...
> >Option UseFBDev
> >...
> >EndSection
> >
>A very neat trick. X can now be ended correctly. Unfortunately, any
>scrolling on any VT afterwards gives me a corrupted screen - parts of
>the screen from other VT's are inserted below, or over the cursor
>position, and at 'half-line' intervals. In typing this email, I've seen
>it 5 times already.
>I'm willing to test anything - but the corruption is alway gone after I
>switch VT's. So getting a screendump is not easy.

I never have seen this problem before. Petr do you know what it could be?

MS: (n) 1. A debilitating and surprisingly widespread affliction that
renders the sufferer barely able to perform the simplest task. 2. A disease.

James Simmons  [jsimmons@linux-fbdev.org]               ____/|
fbdev/console/gfx developer                             \ o.O|
http://www.linux-fbdev.org                               =(_)=
http://linuxgfx.sourceforge.net                            U
http://linuxconsole.sourceforge.net