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Grub boot ISO scrambled desktop

PostPosted: Sat Jan 20, 2018 3:05 am
by WingCommander
I have been booting ISOs from Grub2 for some time now.

Ultimate-Edition 5.5 boots up fine.

When I try to boot the 5.7 ISO, the text scrolls by and when it switches to graphics the screen is comprised of many pink blue and white blocks.

I am using an intel processor with an ATI 8950 "Tahiti" video card (dual GPU).

Any ideas?