Ubuntu
laptop-mode-tools package

  1. Bug #172282
  2. Comment #4

Comment 4 for bug 172282

Revision history for this message
ubuntu_demon (ubuntu-demon) wrote :

For most drives "sudo hdparm -B 254 /dev/sda" works
For some drives "sudo smartctl -o on /dev/sda" is needed before issueing "sudo hdparm -B 254 /dev/sda"
For some drives "sudo hdparm -B 255 /dev/sda" might be needed

IMHO it would be nice if hdparm would provide a single command which turns down power management for all drives.

see also :
https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/59695/comments/286
https://bugs.launchpad.net/ubuntu/+source/hdparm/+bug/172287/comments/1
http://ubuntuforums.org/showpost.php?p=3909494&postcount=552
http://ubuntuforums.org/showpost.php?p=3672087&postcount=18