I have a Dell Studio 15 with an ATI Mobility Radeon HD 3450 card in it. The card seems to work perfectly with fglrx drivers (including 3D, Compiz and games), but I'd prefer to at least test radeonhd and see if I can help. However, after building from source (git development), and swapping Xorg.conf to "radeonhd" from "fglrx", I get a black screen, which is back lit. There is still the familiar Ubuntu login chime and I can log in using the keyboard, but there is no image.

From the Xorg log I spotted these lines which might be significant:

(II) RADEONHD(0): Unknown card detected: 0x95C4:0x1028:0x029F. If - and only if - your card does not work or does not work optimally please contact radeonhd@opensuse.org to help rectify this. Use the subject: 0x95C4:0x1028:0x029F: <name of board> and *please* describe the problems you are seeing in your message. However the driver seems to support the non-Mobility branded version (even beta 3D support). Is there a significant difference? Or are the two chips completely different? If they are similar enough, is it possible to get it working with the non-Mobility settings? I'd prefer to use open-source drivers because there are quite a few showstopping bugs in fglrx, especially suspend/resume being broken on 9.04, and I'd prefer not to be attached to proprietary drivers (everything else on my system is open-source.) Thanks, much appreciated! (Using Ubuntu 8.10, Xorg 1.5.2, Linux 2.6.27-generic SMP on a Core 2 Duo. Card is an ATI Mobility Radeon HD 3450 with 256 MB of dedicated VRAM.) -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org