Unable to boot live 15.10 on MacBook Pro 8,2

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Wily is a package with the following description:

Description: A work-alike of the Acme programming environment for Plan 9

That is not the right package for this bug report.

I'm sorry. I thought it was for 'Wily Werewolf', so thank you very much for the correction and excuse me again.

I have tried today with the 15.10 RC ISO image from http://iso.qa.ubuntu.com/qatracker/milestones/347/builds/104847/downloads and all is the same. Unable to boot the live and screen shows the same issues.

I have tried today with the 15.10 Final ISO image and all is the same.
Unable to boot the live and screen shows the same issues.

If I boot the USB normally, the boot stopped at [6.9] with "i8042: No controller found" issue.
If I boot removing "quite splash" from grub, the boot stopped at [7.3] with "fb: switching radeonfmfb from EFI VGA" issue.
If I boot removing "quite splash" and adding "nomodeset" in grub, the boot stopped after a couple of minutes on "Started WPA supplicant" and after "Waiting for plymouth boot screen".

Status changed to 'Confirmed' because the bug affects multiple users.

Issue still exist on Xenial Xerus (16.04):

Unit specification: http://www.everymac.com/systems/apple/macbook_pro/specs/macbook-pro-core-i7-2.2-15-late-2011-unibody-thunderbolt-specs.html

Issue confirmed on Ubuntu 16.10.

Trying different way to install Ubuntu 16.04 and 16.10 on MacBook Pro with AMD Radeon and got issues.

Actually, I can boot live and install only with the follows in grub:
outb 0x728 1
outb 0x710 2
outb 0x740 2
outb 0x750 0

So, Ubuntu only works with Radeon GPU disabled (external monitor not works) and I must modify the grub to have a working installation and losing discrete GPU.