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I have a GForce G0 6200 and tried 2 different drivers. The first one was nvidiafb, which was delivered with my kernel and the second is nvidia, which I downloaded from nvidia homepage.
If I use nvidiafb, the graphical mode (run-level 5) looks OK, but if I start only to run-level 3 (with command-line) then the text is somehow scrambled: every line starts at the right side of the monitor, the first 4 letters are repeated, the second 4 are missing, and the rest of the line continues on the left side. I can see the scrambled messages too while booting the computer (run-levels 3 and 5).
If I use nvidia driver, all is ok in run-level 3, but in graphical mode (run-level 5) my letters have red and blue shadows. Maybe this comes from an anti-aliasing function?
Does anyone know, what the reason for the problems with these two drivers can be? Can I deactivate anti-aliasing with nvidia driver?
My distribution is scientific linux, but I use a vanilla kernel 126.96.36.199, which I configured and compiled. The reason is, that the original installation used general drivers, which worked, but the machine was slow. So I try to improve it, by putting better drivers and using a better kernel configuration.
I just found, that the red and blue shadows on my text come from anti-aliasing function, that can be activated and deactivated in KDE, but somehow I didn't see these shadows with nvidiafb driver (maybe I didn't look carefully?), or the anti-aliasing is calculated in a different way with nvidia driver. Without anti-aliasing function the text looks bad, so I keep the function.
The problem is solved. It works with the new nvidia driver version 1.0-8174. (I didn't change any configuration, just deinstalled the old driver and installed the new one). Maybe version 1.0-7676 was buggy.