Linux kernel regression on power usage

Posted by dago on Ask Ubuntu See other posts from Ask Ubuntu or by dago
Published on 2011-06-28T18:33:07Z Indexed on 2011/06/29 0:32 UTC
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kernel

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regression

Webupd8 reported this power management fix for the 2.6.38 Linux kernel regression:

Add the following to the boot grub line "pcie_aspm=force"

My question - how does this suggested fix differ from this hint from powertop:

Suggestion: Enable Device Power Management by pressing the P key, which execute the following action:

find /sys/devices/pci* -path "*power/control" -exec bash -c "echo auto > '{}'" \;

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