I just got the new Mac Pro black cylinder with AMD D700 GPU and I'm not able to finalize the Ubuntu install. I followed the steps from your instructions "How to create a bootable USB stick on OS X" from here: http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx
And all of that goes well, I boot up and see the boot menu, then I select option 1) and I get the following:
kernel path: /casper/vmlinuz | ramdisc path: /casper/initrd.lz boot parameters:
Loading Linux kernel...done Loading initial RAM disc...done Attempting to boot the Linux distribution now... error: no suitable video mode found. Booting in blind mode
Then after a few seconds the Mac reboots itself and that's the end of it. Have you seen this error before? Is it the GPU hardware drivers that aren't compatible?
I used ubuntu-13.10-desktop-amd64.iso
Thanks a lot, Alejandro