Re: tlug: STB Velocity 3D and XFree 3.3.2

["Manuel M. T. Chakravarty" <chak@example.com>]

From: Scott Stone <sstone@example.com>

> On Thu, 23 Jul 1998, Manuel M. T. Chakravarty wrote:
> 
> > Some more experiments resulted in the following: The card
> > works *exactly once* after booting.  When I leave X and
> > start it again, the machine freezes.  Actually, all video
> > modes (including the second above) seem to work (I tried
> > about five), but all of them work only when the card is
> > `freshly' booted.  I guess that it is the probing of the
> > clock that freezes the machine when it is done after I have
> > started X already once.  In particular, if, after starting
> > X, I run `turboxcfg' to set up video modes, the machine
> > already freezes after the dialog where I have to select the
> > color depth -- `turboxcfg' seems to probe for the possible
> > video modes, which I guess requires probing the clock.
> 
> why would you run turboxcfg when X is already running?  You're supposed to
> run turboxcfg BEFORE starting X...

Of course I left X again before starting `turboxcfg' a
second time :-)

> > Apart from this problem, everything seems to work fine, even 
> > the acceleration (though I have a slight distortion on the top
> > 1cm of the screen image, which I cannot remember to have
> > seen before installing the new server). 
> > 
> > > When you run at 1280, which dot clock does it use?
> > 
> > I append the output of the SVGA server below (but for
> > 1152x900 -- otherwise, I have to boot again, and somebody else
> > is currently also logged in).  It says
> > 
> >   (--) SVGA: Maximum allowed dot-clock: 135.000 MHz
> > 
> > I guess, the server probed for this value?  Can I just tell
> > it the value, so that it doesn't probe?  (I didn't find any
> > such option in the manual -- but maybe I just didn't
> > recognize it.)
> > 
> > Any idea why the card behaves differently the second time I
> > start X?
> 
> So, is it still only with 1152x900, or all resolutions?  

All color depth/resolution combinations that I tested (maybe
five) are fine -- given the machine is freshly booted.

> What happens if
> you run Win95/98 in 1152x900?

This machine is M$ clean ;-)

But I had a Slackware installation with AcceleratedX running
on the same hardware for about a year without these problems
-- so, it is not simply the card.  But I'd prefer to do
without AcceleratedX, as I had other problems with it.

Manuel
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