I have Ubuntu 12.10 running on a MCP6P M2+ Ver. 6.x board with a Phenom quad core processor and 4 GB of RAM. I had similar issues with another computer running 12.04 server, not booting after install which required the ACPI to be disabled. Well, I'm finding through troubleshooting that Grub needs me to just LOOK at the config before it will boot correctly. It's quite strange. I've tried
boot-repair, and I've updated grub to
acpi_osi=Linux, but it will not boot automatically. Literally, for it to boot, I have to go into
E on grub, then just push
F10 to boot.... making NO changes.
Any ideas how can I resolve this issue??