[MPlayer-users] Re: matroxfb / mgavid driver

[Cameron Hutchison]

Once upon a time Ryan Underwood said...
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> 
> Hi,
> 
> > > The corruption only occurs using the -vo xmga on the first head; it doesn't
> > > happen when using -vo x11 or sdl on either head.  I am not sure about the
> > > mysterious workings of the mga_vid driver :D so not really sure what's happening
> > > here.  Can anyone help?
> >
> > Edit your XF86Config file to tell X you only have 24 megs of video mem
> > or so. Then it will avoid using the last 8, so they'll be reserved for
> > mga_vid and safe from corruption.
> 
> I added that option into my Device stanza for the G400 first head,
> and unfortunately the corruption continues to occur.  Any other
> ideas?

If X is mis-detecting the amount of ram you have, maybe mga-vid is as
well, and then putting the BES buffer just before the 16M point. 
Try setting the mga_ram_size module parameter to 32.