Luke, do you also have laptop-mode enabled as Martin does? Can you post the output of 'sudo hdparm -I /dev/sda'?
Reassigning to pm-utils, since acpi-support is no longer involved in setting hdparm apm values. ** Package changed: acpi-support (Ubuntu) => pm-utils (Ubuntu) ** Changed in: pm-utils (Ubuntu) Status: New => Incomplete -- [Dell M1330] Hard drive spins down often, even on AC power https://bugs.launchpad.net/bugs/362047 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs