I usually write hdparm -B 254 /dev/sda to the /etc/rc.local to set the APM 254 or 255, so if laptop-mode-tools only do the same unfortunately it won't be enough.
For example my harddrive is Seagate ST9120822AS. If you check https://wiki.ubuntu.com/DanielHahler/Bug59695 it shows there is no known safe APM setting exists to this hard drive. In the earlier Ubuntu distributions I tried both 254 and 255 but they didn't solve the problem for me. For many hdd it shows solution but for mine and some others there isn't any known solution. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/59695 Title: High frequency of load/unload cycles on some hard disks may shorten lifetime To manage notifications about this bug go to: https://bugs.launchpad.net/acpi-support/+bug/59695/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
