Re: Unable to boot Ubuntu 12.04.2 in EFI mode, black screen (dual boot with Windows 8
Thank you for your reply oldfred,
the video card is just nVidia GeForce GTX660 (it's a desktop) so no Optimus here.
I tried your suggestion to edit the GRUB parameters (replaced "quiet splash" with "nomodeset") but I've still got the black screen afterwards.
What I find strange (regarding to your suggestions regarding the boot parameters for nVidia) and also the missing kernel headers, is that when I enable "Legacy Support" in Secure Boot Config boot menu, and select Ubuntu Live USB to boot it in EFI mode, it actually boots to the Ubuntu live session after selecting the "Try Ubuntu without installing" from the same GRUB menu as above.
I still get the GRUB menu even after enabling legacy support and the live session is working without problems. Shouldn't I get the same problems as when legacy support is disabled (and efi boot is therefore forced) regarding the nVidia kernel options?
Also, your suggestion to install missing kernel headers would only be valid if I was already able to login to live session (in efi mode) but I never get that far?
I must admit that this is the first time I am attempting to install Ubuntu on an EFI system so I might be stating something obvious but I am lost at the moment.
Will need some time to process all of the links you posted, it might be more clear when I done with that.
Thank you, any other tips are much appreciated.
P.S. I've also read about a guy having exactly the same issue with his Dell XPS I believe (cant fint the thread now thought) and the only thing that worked was to install in in legacy mode and then run Boot Repair in order to convert the installation to EFI afterwards. No kernel boot parameters helped him. Perhaps I am facing the same issue?
Kind Regards,
Veroslav
Intel Core i7 860 2,8 GHz - 8 GB DDR3 - 1,5 TB SATA 3G - nVidia GeForce GTX 260 1,8 GB - Ubuntu 12.04 Precise Pangolin
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