I am encountering this issue as well. I have the same motherboard (ASUS M4A89TD PRO/USB3) -- this issue is rather frustrating.
I have narrowed it down to an issue with ACPI and APIC. By disabling "ACPI APIC Support" in my BIOS, I do not have this issue anymore, however, it has rather nasty side effects; I'm only able to utilize one out of my six CPU cores. This is not a solution. I have attached a dmesg log of this bug in action. You can notice the ~145 second delay around 1.57 or so. I can gather as much information as necessary, provided someone assists me with "digging deeper". I would really like to see this bug resolved. I have been in contact with ASUS as well, their "technician" told me that Linux does not support ACPI, so I am not sure how far I am going to get with them. I have submitted another ticket, hoping to reach someone competent. ** Attachment added: "dmesg log of bug in action" https://bugs.launchpad.net/ubuntu/+bug/749367/+attachment/2041404/+files/boot-dmesg-acpi_apic_support-enabled-BROKEN.log ** Package changed: ubuntu => acpi (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/749367 Title: Ubuntu just hangs up 2:45 seconds after system selection -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
