Wednesday, 23 September 2009

Another tip to save an extra 1.5W of power on the Acer Timeline laptop

In an ubuntuforums post, a user reported a method to save an extra 1.5W of power on the Acer Timeline laptops:

http://ubuntu-ky.ubuntuforums.org/showpost.php?p=7982766&postcount=299

This involves using the power management of the sata disks with this command:

for i in {0..5}; do echo host$i result:; sudo sh -c "echo 'min_power' > /sys/class/scsi_host/host$i/link_power_management_policy"; cat /sys/class/scsi_host/host$i/link_power_management_policy; done

Updated counts for the different groups:


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