Your log looks fine. Direct rendering seems to be enabled. Whether or not DRI gets enabled shouldn't have anything to do with MergedFB. try removing: Option "AGPMode" "4" and: Viewport 0 0 from your config. What patch did you use? also, what version of xfree86 did you patch? were their any rejects? Also did you ever get non-mergedfb dualhead working with stock 4.3 or CVS? If that works then mergedfb should work. Alex ----------------------------------- Moving on... I install kernel 2.6-test5, which is supposed to have better via-agp support. Now when I start X the second monitor simply stays black. However -- it's power-led is lit, which means some information is moving from the computer to the monitor (in console mode the second monitor's power-led is off, as in stand-by mode). Attached is my current XFree86 log. I manually made sure that the radeon module and the via_agp module are loaded. Any thoughts? Alon Weinstein wrote: > Well, MonitorLayout didn't change anything. I think the problem is due > to the agpgart.o module not loading. Apperently there's a problem with > KT400/600 AGP and agpgart.o -- the mainboard uses AGP 3.0, and agpgart.o > doesn't support it in this version. > > Does anyone know in which kernel version agpgart.o supports KT400 AGP > correctly? > > Alex Deucher wrote: > >> your log looks fine. the only thing I see is that direct rendering is >> disable because AGP is not available. you probably need to make sure >> the apggart kernel module is loaded. I load the agpgart.o and radeon.o >> kernel modules in my rc.local script. >> >> in regards to the weird behavior, you might also want to disable >> fastwrites. >> >> The behavior you are seeing when you switch modes (ctrl-alt-+) is >> expected. you are swithing between a side by side mode >> (1024x768-1024x768) and a clone mode (1024x768). in the clone mode the >> both viewports look into the same part of the framebuffer. >> >> you can try adding: >> >> Option "MonitorLayout" "CRT, CRT" >> if you are using two CRT monitors. if you are using a DVI flatpanel >> and a CRT then try: >> >> Option "MonitorLayout" "TDMS, CRT" >> >> you can also try changing "CRT2Position" from "LeftOf" to "RightOf" >> it shouldn't make a difference, but it's worth a shot. >> >> >> >> ------------------------- __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86