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2.8 Suggestions for saving power

All of these are applied/can be applied by laptopmode. I added a little note about it, but it's not enough. Some of the values are different from those applied by the default laptopmode config. Redundant/could create issues. UNIVAC 23:00, 24 September 2009 (EDT)

Other tweaks

No explanations with these tweaks? What do these do? Is linking to the source enough or should we describe what we're doing in detail? I'm never too comfortable with "do this" type instructions without a "this is why" explanations.--Multiphrenic 09:05, 27 April 2011 (EDT)

Suggestions for saving power

I'd add a a little script for turning off the wlan-Hardware when not connected at startup...if not turned off, the wlan-Hardware will go on searching for an AP to connect to, although there might be no potential AP at all, thus wasting power. I regularly forgot to disable it when en route, having to save power without any need of my wlan - it may not be too much power to save, but it's also a very simple little script to execute at startup (maybe with a sleep of 60s) to save it:


essid="`iwconfig wlan0 | grep ESSID | awk {'print $4'}`"
	if [ "$essid" == "ESSID:off/any" ] ; then
		sudo iwconfig wlan0 txpower off

--Wysiwyg 11:20, 12 June 2011 (EDT)

If it works for you it could be useful also for others, add it under Suggestions for saving power. -- Kynikos 09:29, 13 June 2011 (EDT)
Already added. Close. -- Fengchao (talk) 07:12, 20 February 2013 (UTC)

BatteryMon requires "hal" wich is unsupported

Should it be changed or not? Are there other suggestion for battery monitor applets? --Ahel 10:52, 22 November 2011 (EST)Ahel

In fact, the article mentiones "batterymonAUR which can be found in the AUR" which seem to no longer exist in the AUR. Perhaps this reference should be removed --Mloskot (talk) 23:02, 17 June 2012 (UTC)
Fixed. Close. -- Fengchao (talk) 06:05, 20 February 2013 (UTC)

Udev Rule to Suspend System

The udev rule could be edited to run a script that does polls the battery's capacity at regular interval when it's status changes to Discharging:

SUBSYSTEM=="power_supply", ATTR{status}=="Discharging", ATTR{capacity}=="2", RUN+="/usr/bin/systemctl suspend RUN+="/script/to/poll/battery/and/suspend/"

There may also be a uevent that fires when the battery reaches an alarm state (when /sys/class/power_supply/BAT*/alarm is reached or changes). I have not tested this on my own system yet or figured out just how that file works yet. Ego.abyssi (talk) 23:32, 3 March 2013 (UTC)