Ubuntu
laptop-mode-tools package

  1. Bug #250935
  2. Comment #13

Comment 13 for bug 250935

Revision history for this message
ceg (ceg) wrote :

Thank you for your comments.

Then the current state I see in intrepid is this:

- You still need to "ENABLE_LAPTOP_MODE=1" in /etc/default/acpi-support (Bug 244838)

- The /etc/laptop-mode/laptop-mode.conf default hdparm -B value has been changed from 254 to 255.

This may be OK for consistency of the current state, but 254 is actually needed for many laptop harddisks to stop load cycling. (hdparm -B255 turns off the disk's apm feature, but this only turns off the spin down timer in many disks and doesn't increase the head parking timer at all, which is the issue here.)
(Added that info to https://wiki.ubuntu.com/PowerManagement)

Laptop-mode has always shipped with the sane defaults like 254. I see no real reason to keep suboptimal defaults from the ubuntu hack. The defaults can just be merged from the debian package I guess.