I have this same error in dmesg on a Dell Inspiron 15z with a fresh quantal install. I tried the 3.7-rc2-racing kernel but it only boots with acpi=off. With the regular quantal 3.5 kernel its possible after a number of retries to boot with acpi=noirq. Booting with acpi=off does not allow testing this bug. I'll mark this bug as Confirmed with the kernel-unable-to-test-upstream tag.
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags removed: needs-upstream-testing ** Tags added: kernel-unable-to-test-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1071353 Title: ACPI Warning: 0x0000000000000460-0x000000000000047f SystemIO conflicts with Region \PMIO 1 (20120320/utaddress-251) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1071353/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs