system installation - Installing 16.04 on iMac 17,1 5k - Ask Ubuntu


i can't life of me boot. i've have drive partitioned, , 16.04 installed correctly usb stick. had set acpi=off , nomodeset install work.

but after install, same grub params, ubuntu not boot. blank purple window. i've tried lots of variations, 1915.modeset=0, radeon.modeset=0, etc.... nothing.

has got ubuntu installed on 1 of new 5k imacs? i've tried 14.04, 16.04, , ubuntu 16.10. has graphics system. not sure why works fine during install, not after install.


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