So this was an hardware problem which is fixed by a bios update. I will therefore reject this bug, please reopen if the problem still exists
** Changed in: Ubuntu Status: Unconfirmed => Rejected -- Grub error 15 with kernel 2.6.15.x and (any version of) Vanilla kernel https://launchpad.net/bugs/27743 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs