The underlying issue was that this was booting in CSM mode and the x2apic wasn't being configured correctly causing an SMP boot to hang.
We solved this issue by using the EFI grub loader to avoid booting in CSM mode. 1. add /boot/efi /etc/fstab 2. install grub-efi running grub-install --target=x86_64 and reboot. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1322148 Title: [MacBookPro11,1] Utopic freezes on boot Status in “linux” package in Ubuntu: Won't Fix Bug description: Running latest utopic on Macbook Pro Retina causes it to freeze on boot. I can't file this with ubuntu-bug because the system is not bootable, but the hardware information can be read from bug 1317862. Attached is a screenshot of where it freezes when booted in recovery mode. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1322148/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
