I bootet my Macbook 8-2 with Kubuntu Rarings
Normal Live CD mode: Only discrete AMD GPU found, everthings fine.
EFI Installer (EFI mode needed to use other GPU): Screen goes black (even on ttys).
So I do the same, but use
nomodeset on the GRUB line: Splash and Installer GUI show, but "Try Kubuntu" (Live CD mode) gives black screen.
I install Kubuntu, reboot, boot holds:
radeondrmfb has a problem taking away the framebuffer from the
intel driver (two GPUs).
So I use
nomodeset again. Splash, boot runs through to text login, no X:
lightdm not running. Xorg.log tells me "no displays found".
Any ideas? Basically I just want to use Intel iGPU to save battery.