Modesetting support for the ATI "Evergreen" (Radeon 5xxx series) chips was only introduced upstream in kernel 2.6.34. As Lucid is using kernel 2.6.32 (with direct rendering manager (DRM) back-ported from 2.6.33), you will need to use ATI's proprietary fglrx (Catalyst) driver. Were you offered this driver during boot?
? (don't bother with the 320x200 and 640x400 modes).
If you still can't get the CD to boot to a usable desktop, hold down shift and when the grub menu appears choose recovery mode. Then choose root shell with networking (I think that's what it's called, or it could be command prompt with networking). Then enter the command apt-get install fglrx
Modesetting support for the ATI "Evergreen" (Radeon 5xxx series) chips was only introduced upstream in kernel 2.6.34. As Lucid is using kernel 2.6.32 (with direct rendering manager (DRM) back-ported from 2.6.33), you will need to use ATI's proprietary fglrx (Catalyst) driver. Were you offered this driver during boot?
Have you tried booting using safe graphics mode?
Have you tried all of the vga= values under the heading "Linux video mode numbers" at http:// en.wikipedia. org/wiki/ VESA_BIOS_ Extensions# Linux_video_ mode_numbers
? (don't bother with the 320x200 and 640x400 modes).
If you still can't get the CD to boot to a usable desktop, hold down shift and when the grub menu appears choose recovery mode. Then choose root shell with networking (I think that's what it's called, or it could be command prompt with networking). Then enter the command apt-get install fglrx
Let us know how that goes.