Denis 'GNUtoo' Carikli wrote:
it now works better: with pci=nocrs the radeon card initialize and kdm+Xorg works somehow.... I've now the screen flickering problem at high resolutions(starting at 1024x768, 800x600 is fine).
if the problem can't be fixed, would buying an nvidia nv50 workarround the issue and permit me to have a resolution up to 1440x900
pci=nocrs should not be required, and regardless of what graphics card you buy the issue that requires pci=nocrs will remain. Best would be to look into that issue and fix it. Then there's a chance that your radeon graphics will work flawlessly, and then you could of course buy another graphics card if you wanted to.
//Peter