I have installed openSuse 11.3 KDE, and am loving it so far… Due to my laptop being a bit old I am having difficulty nailing down the best graphics driver to work with…
My Graphics card is an ATI Radon X1200. By default openSuse uses the Radeon driver for 2D, which is sadly not working quite as well as it should with my old graphics card. My basic problem is not that I can’t get 3D (It uses swrast (No 3D Acceleration (7.8.2)), although that would be nice, it is that when I scroll on any page there is lag, and it looks jerky.
I have therefore tested with fbdev, vesa, mach64, ati and radeonhd drivers respectively, and right out the gate the fbdev driver gave the best performance with no lag or jerking - surprising for the weakest driver .
That said, I was unable to test with radeonhd or vesa due to them having errors.
The radeonhd one gave the following:
(EE) FATAL: RadeonHD presently does not work with kernel modesetting (KMS).
Please disable KMS in your kernel.
So my question is, what are the side-affects of disabling KMS, and is it something that I should consider doing, or should I just be happy with using the fbdev driver. As for the vesa driver, I can’t remember the error that it gave, so I will have to check and post it up in a bit.