On Mon, 2002-05-27 at 19:43, [EMAIL PROTECTED] wrote: > > > > In other words, all the work involving the Video card is already done. > > > > > > Now you are wrong. :) > > > > > > The X server disables video devices it doesn't use. > > > > DOH! That seems like a really dumb Idea. Is it easy to make it not disable > > the other cards? Would that gum up other stuff? > > I may be wrong, but I think it's not really so dumb when there is > only one X server: the cards share the I/O address space, so unless > you disable all but the one that you're communicating with at the > moment, you're in trouble. But that also means that simply removing > this device disabling doesn't solve the problem (generally). That's > what the already mentioned patch (you know, the one from Brazil) > does, besides adding USB keyboard support, etc. It does work for some > cards and not for others; also, even for the nVidia's that work (with > nVidia's closed source drivers), video mode changes hang the machine. > > So, as I already said, I think some kind of serialization of video > device accesses is needed between the multiple X servers.
Or maybe memory-mapped PCI access to the VGA registers would help? I feel a clean solution will be hard to achieve without kernel support to say the least though. -- Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer XFree86 and DRI project member / CS student, Free Software enthusiast _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
