Wow! Sounds like a very cool project! I'm working on running DFB on a PCI card while running X on the AGP system. Haven't yet tried running DFB on both cards - still trying to find the optimal PCI card to use... So someone with more knowledge of the internals would have to answer whether DFB can run on more than one framebuffer at a time.
As for fan-less, that should be no problem. Most PCI graphics cards don't have Fans, even the Matrox models I've seen. I've never seen a Quad-head, but for a PCI card you should have no troubles replacing the fan with a heat sink if the card does have a little fan. I think where you're more likely to run into trouble is PCI throughput: 5120x1024x16bpp= 10MB x 15fps = 150MB/s 32bit PCI @ 33MHz = ~133MB/s 32bit PCI @ 66Mhz = ~266MB/s The bus speeds are for the whole bus, there may be other devices than your gfx cards using it. I wonder, are there any PCIe gfx gards that use 1 or 2 lanes only? That would still be more than PCI, each card would have the full bandwidth, and you could stick them in a modern system... Richard Unger -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Erwin Rol Gesendet: Dienstag, 20. Dezember 2005 00:11 An: [email protected] Betreff: [directfb-dev] quad head system Hey all, I am currently looking for a quad head solution, and wonder if someone here might be able to give some advice. The system needs 4 monitors connected to one PC (well embedded x86 system) via a PCI bus. The whole system _must_ be fan-less and it must work with linux. First of all is it possible to use directfb with more than 1 card at the same time ? And would it be possible to use for example a matrox quad head card and make a directfb frame buffer of 5120x1024 ? Currently i have a system with a VIA/S3 Twister and the performance for video playback is rather poor (not surprising since it is only a 400 MHz C3) the question is would a move to a CLE266+400MHz C3 bring more than a move to a Twister+600MHz C3? Or what about the CN400 chipset, there are some patches floating around for its hardware mpeg support, are they any good (read: usable) ? TIA, Erwin Rol _______________________________________________ directfb-dev mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev _______________________________________________ directfb-dev mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
