basically you should be happy, that you get a picture. radeon oss does not always work, last time oss did not work was a radeon 2400m on a core2 duo mac that the oss driver did not work at all (3.0.x kernel, xorg 1.10.4 from debian backports). also i had problems running an ati 9600m and get a picture. even with radeon.modeset=0 it was very unstable (no fglrx possible anymore). mobility chips seem to be very crappy - sometimes you really need a system like kanotix hellfire that can boot with fglrx enabled...


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