Thanks for the testing, indeed this is the case of a bios bug, with the patched kernel we have now:
[ 16.213098] SP5100 TCO timer: mmio address 0xfec000f0 already in use sp5100_tco sees the address is already used now and doesn't load. The fix is on its way to stable, so should soon appear in a stable update and ubuntu kernel. ** Changed in: linux (Ubuntu) Status: Incomplete => In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Herton R. Krzesinski (herton) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/740011 Title: Natty: the driver sp5100_tco prevents PC startup -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs