I have the same video card (ATI HD 3470) and the first thing after i installedubuntu 10.04 it's to install the officialati drivers http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx?type=2.4.2&product=2.4.2.3.32〈=E nglish. I try some 3D applications (of compiz ) and it's all perfect. The problem it's when i suspend (i not try to hibernate yet), at the second or third time i suspend my laptop it don't "wake". I try to search some solution, but finally i abandon and i uninstall the drivers (i use suspend a lot), but for my surprise all the 3D applications still working!!!.
Firstly i installed the drivers because in older versions of ubuntu, the 3D applications don't work fine. Now i can use them and there's no problem to suspend my laptop every time. So I have an fully operative ubuntu without drivers, thanks to the improvement of the standard drivers of ubuntu.
You can prove to use your ubuntu without drivers and tell.
Luck!!



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