How do I get ATI Mobility Radeon HD 5450 + Integrated Intel HD to work?

Solution 1:

if your laptop is a mux one (as mine),the only driver working is fglrx 11.8. I succeed to make it works including switching from intel to ati chipset on ubuntu 10.04. newer distribution as ubuntu 11.04 and 11.10 aren't supported by this driver version.

If you only need intel, the i915 included in all distribution is sufficient (and use vga_switcheroo to deactivate ati chipset to save battery time...). It's the only solution as now for newer distributions with my hardware.

My Bios is as yours : no switching option (if you have one, you can disable ati card in bios and use newer fglrx version, it's not my case).

If you have a mux one and take a look at Xlog, you should see "fglrx is not supported on A+I Mux platform, please uninstall" with newer ATI drivers (it possibly your blackscreen problem).

Hope this help.