Public bug reported:
Binary package hint: powertop
On Karmic (Alpha 2, x86_64) using powertop package 1.11-1, powertop
repeatedly suggests the following:
Suggestion: Enable wireless power saving mode by executing the following
command:
echo 5 > /sys/bus/pci/drivers/iwl3945/0000:03:00.0/power_level
This will sacrifice network performance slightly to save power.
However, striking the "W" key to accept this suggestions doesn't change
the setting, and powertop suggests this action endlessly. Powertop
continues to suggest this action even if the power setting is already
"5".
I believe the problem is that reading from the power_level file
previously returned a single number, and now returns a long string.
Before: 5
Now: SYSTEM:auto MODE:fixed INDEX:5
Perhaps powertop should use iwconfig to interrogate the power setting
instead of relying on sysfs.
** Affects: powertop (Ubuntu)
Importance: Undecided
Status: New
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powertop repeatedly suggests iwl3945 power savings
https://bugs.launchpad.net/bugs/389975
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