<html> <head> <style></style> </head> <body class='hmmessage'><div dir='ltr'> The multimonitor situation for AMD/ATI uers is like this: If you use the open source ATI/Radeon (gallium) driver, no problems, everything "just works." This sort of open source support is why I use ATI/AMD and not Nvidia cards. The only problem is that (as exepcted) opengl rendering of Blender projects is a bit slow, although still about 4x faster than CPU rendering on AMD Phenom II x4, so what am I complaining about?<div><br></div><div>The fglrx driver (in precise, anyway) now works in gnome-shell and is suppposed to support Xrandr, but doesn't support it very well. I get the usual Xrandr/fglrx bug of not being able to move the secodary monitor out of the primary monitor, that is being restricted to cloning or partially cloning the primary monitor. A secondaery montor inside the primary monitor NOT cloning it is an ugly mess with any driver. Trying to set up two monitors in the Catayst Control Center is worse-you can set it up easily enough, have to restart X to put it into effect-and then gnome-shell crashes, other window managers will work. With my card, a radeon HD 5570, the secondary monitor simpy goes all-grey, displaying nothing else with any window manager except that during an attempt to start gnome-shell it may flicker to the color of the background image. </div><div><br></div><div>The only reason with my workflow to ever run fglrx is for fast Blender rendering using openGL, in almost real time. This is a factor for my "Fur Wars" and similr videos that start with a modified Star Wars crawl made in Blender, but a minor one. I put fglrx on a backup partition, can uise it if I need to experiment with something in Blender and render multiple times.</div><div><br></div><div>At the moment, I cannot switch between two monitors (for video editing, open-source driver) and real-time openGL rendering for Blender 3D content creation(fglrx driver) from scratch without rebooting. Maybe some way to run both drivers in UMS and toggle xorg.cof files?</div><div><br></div><div>The modified Star Wars crawl in 1024x600 resolution is the benchmark I am using for comparing drivers in Blender.</div> </div></body> </html>