[Mactel-linux-users] No video signal unless booting Linux

[Tino K. <tin...@ti...>]

Hi,

after playing around with grub-efi, and fixing grub-install in Debian
sid, I know have hosed graphics in my Mac mini Core 2 Duo. I don't get
a video signal after power on, in the EFI menu, in grub-efi and when
booting OS X. There are two ways to restore the video: suspend in OS X
and resume, or boot Linux.

I was suggested to reset the NVRAM, by using command + option + p + r
after power on. However, according to the instructions I should hear
two beeps if the reset was successful, and I don't hear the beeps. So I
don't know if the reset really happened. I have a PC keyboard, so I use
windows + alt + p + r. Should this work? Should I hear the beep on a
Mac mini? Any other hints to restore the video? I already pressed the
power button after removing the power cord.

Regards,
Tino