Linus, Some dell OEM radeon cards offered Dual DVI ports and I believe there are some other oems (tyan?) that will be offering Dual DVI cards. the radeon 9000s and newer only have one tdms trandsmitter built in, but an additional external one can be added on to drive the second DVI port.
for multi-head 3D on radeon hardware, check out my mergedfb patch: http://bugs.xfree86.org/show_bug.cgi?id=276 Unfortunately, due to a hardware limitation with the scissor registers, you are limited to 2048x2048 for 3D. your framebuffer can be as large as 8192x8192 (limits for the 2D engine). you can use mergedfb at resolutions higher than 2048x2048, however, any 3D windows larger than 2048x2048 will not display. Alex --- Linus Torvalds <[EMAIL PROTECTED]> wrote: > > Ok, this is pretty off-topic, but I'm wondering what the status is > for > open-source support of 3D-capable drivers for such studly monitors as > the > IBM T221. > > Yes, it's still expensive as hell, but it isn't nearly as bad as it > was a > few years ago when it was very limited availability, and cost USD > $20k+. > These days it is "only" $9k or so and apparently is actually > available in > the sales channel. > > The thing is a 3840x2400 pixel monster, and to drive it at reasonable > frequencies you actually need to support a quad DVI setup where it > looks > basically like four monitors running at 1920x1200. And from what I > can > gather by googling, the outputs need to be synchronized, so you > really > need to have a card like the NVidia Quadro4 XGL or similar (ie you > can > apparetly _not_ drive it with multiple separate video cards). > > Apparently it also does work with just a single DVI thing (ie reports > of > it working with the Radeon 8500 at least on macs), probably at a much > reduced frequency (ie a single DVI link should be able to drive the > thing > at something like 10Hz refresh rate - I think the Radeon 8500 > supports two > links on its single DVI-I interface, so should get up to 20Hz?). > > The binary-only NVidia driver supports it at the full 40Hz frequency, > so I > know I can get the thing to work under Linux in case I decide to > waste the > money on it (or, preferably, convince my employer to do so ;) > > However, I was wondering if anybody knows of somebody using it with > proper > opensource drivers.. Or is just otherwise confident for some > technical > reason that it should work.. > > I'd want 3D acceleration to work, but I don't care if it ends up > being > limited to smaller areas (ie if the canvas size has to be limited to > 2048x1536 or something, who cares?). > > Damn, but it's a drool-inducing piece of hardware. > > Linus > > __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
