Questions related to power management, particularly power saving measures.

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4
votes
0answers
102 views

Prevent gnome power manager from showing keyboard battery

My gnome toolbar shows a battery indicator which is always wrong. I recently figured out why; as when clicked it shows both my internal battery status and my keyboard status as two separate items: ...
4
votes
0answers
422 views

Battery status not refreshing

It was working fine, but after upgrading Unity to last version, it is not refreshing anymore. The percentage and charging status remains on what it was on system startup. acpi command in terminal, and ...
4
votes
0answers
568 views

Lubuntu - xfce4-power-manager alternative

Can I uninstall xfce4-power-manager and set my suspend settings somewhere else? How would I be able to check my battery status? I would like to get rid of xfce4-power-manager because of my problems ...
4
votes
0answers
896 views

How to control of battery charging/discharging limits?

I'm running HP 530 laptop and Ubuntu 10.04. My old battery is died some times ago, so I have got the new one. I'd like to get possibility to change the limits when the charger starts to charge ...
3
votes
0answers
16 views

How to play sound before suspending laptop?

How do you configure Ubuntu 14.04 to play a short sound just before it suspends? I bought a laptop which I later found had no visible status LEDs when the lid was closed. On past laptops, I've had ...
3
votes
0answers
47 views

Why does my computer try to shut down when I plug in headphones?

Using Ubuntu 14.04LTS. Noticed that when I plug in headphones, a menu appears asking if I want to "lock, suspend, restart, or shut down." Is this normal? How do I fix this if it isn't normal?
3
votes
0answers
165 views

Laptop doesn't suspend when lid is closed - No state change

I have a problem about my laptop that doesn't suspend when i close lid. First the story. I bought a new Acer e3-112. It camed with win8.1 and i upgraded it to win10. Then i shrinked the hdd and ...
3
votes
0answers
113 views

Battery indicator disappears on connecting the power

I removed Unity and installed Gnome on Ubuntu 14.04. Now the battery indicator disappears on connecting power. The indicator-power-service appears to be there but it isn't working. On running it from ...
3
votes
0answers
208 views

How do I stop the lock screen from dimming to black?

I've spent a ton of time searching for this on Google, and I still can't seem to find it. Please read fully before answering, because the majority of the answers I'm finding are about preventing ...
3
votes
0answers
1k views

How can I set a different screen timeout time when on battery than if I am plugged in?

Currently, Ubuntu 14.04 only provides a single option: "Turn screen off when inactive for: x minutes" that applies regardless of whether my laptop is plugged in or not. I want to change this setting ...
3
votes
0answers
811 views

Disabling suspend/sleep/hibernate on a headless Xubuntu

I'm running Xubuntu 13.10 headless via ssh and tmux. Whenever I leave the machine, making sure to have a tmux session opened, it will invariably crash after about an hour. The sign it has crashed is ...
3
votes
0answers
341 views

Ubuntu restarts on shutdown/hibernation commands, instead of shutdown

Friends, Whenever I am going to shutdown/hibernate my Ubuntu PC its restarting after completing their process. Mean to say if press shutdown button its shutdown properly and switch off the display but ...
3
votes
0answers
474 views

Secondary battery not found?

I've got a Asus TX300 running Ubuntu 13.04. This is a laptop tablet hybrid which has secondary battery in the dock. This battery is not detected by Ubuntu as far as I can see. Ran this while docked: ...
3
votes
0answers
192 views

How to tell if laptop was woken by rtc?

Say I set my laptop to wake every morning with rtcwake (e.g. echo $(date +%s 'tomorrow 08:00') > /sys/class/rtc/rtc0/wakealarm in a cron job or in /etc/pm/sleep.d/99-set-alarm.sh). Now, I'd like ...
3
votes
0answers
321 views

xfce4-power-manager keeps restarting after suspend

In a clean install of Xubuntu 12.04, the xfce4-power-manager keeps restarting after suspend. If i quit the program and restart it, it keeps restarting. If i quit the program and restartit a few ...
2
votes
0answers
66 views

Power Suspend inconsistently working

I have a Ubuntu 14.04 desktop. I rely on the power suspend to suspend my system when I am inactive for longer than 30 minutes. For some reason, this doesn't always work. I came to my system ...
2
votes
0answers
194 views

15.10 - Ubuntu does not power off on shutdown

I have been around the internet trying to find the answer and no solution given has worked. I have disabled quiet and splash from /etc/default/grub so I can see the output. When shutting down, there ...
2
votes
0answers
38 views

Disconnect a laptop charger in software?

Short of the question: Are there any particular mechanisms to temporarily switch the charger input on a laptop on or off in software? In particular I am looking at a Dell Inspiron E1505 in my case. ...
2
votes
0answers
34 views

How can I execute a script when my laptop failed to suspend

My laptop occasionally fails to suspend, resulting in it burning up it's battery (and sometimes getting roasty-toasty in my bag). In dmesg I usually see this entry: PM: Some devices failed to ...
2
votes
0answers
123 views

Gnome 3.14.4 won't blank the screen / suspend the system due to inactivity

I installed gnome-shell and ubuntu-gnome-desktop on top of Ubuntu and now the automatic suspension doesn't seem to work (I've been using GNOME now for some time and I'm not 100% sure if it worked at ...
2
votes
0answers
1k views

How to disable automatic brightness adjustment in Ubuntu 14.04?

I am running Ubuntu 14.04 LTS on a Dell 3542 laptop. My problem is that screen brightness changes depending on content. I think this is called automatic (or dynamic) brightness adjustment, as I stated ...
2
votes
0answers
501 views

Card reader draining power on MacBook running 14.04

I'm using 14.04 on a MacBook Air 5,2 (mid 2012, 13"). I just recently noticed powertop listing the built-in card reader to drain massive amounts of power: Power est. Usage Device name 6.68 W ...
2
votes
0answers
59 views

Ubuntu still shuts down after I plugged my charger in

On Kubuntu when my battery is dying and I plug my charger in, it says "All suspensions have been cancelled." On Ubuntu or more accurately, Unity-based distors, it still shuts down after plug in my ...
2
votes
0answers
212 views

Battery Icon does not work properly for dual batteries

I have two batteries for my laptop, one is the built-in battery and the other comes from keyboard (X1 Helix if you want to know how that works). The way it works is: laptop draws power from ...
2
votes
0answers
59 views

Determine which device resumed PC from suspend

I'm running Ubuntu 13.10 as a HTPC and have configuring the PC to resume from suspend in order to record scheduled live TV programs. This part works fine. What I want to do now is determine what ...
2
votes
0answers
454 views

Prevent resume from suspend on lid open for 14.04

I'm running Ubuntu 14.04 on an Asus n550jv. I had this problem in 13.10 also. I want to disable resume-from-suspend when the laptop lid is opened. The traditional answers to this involve echo "LID" ...
2
votes
0answers
125 views

Hack Battery Preference for Gnome 2 MATE on Ubuntu 13.10

I am using Ubuntu 13.10 on my 32-bit computer. However, I missed the Gnome Desktop Environment so I installed MATE 2. I have encountered a problem with the battery preferences. I don't want to put ...
2
votes
0answers
104 views

How to temporarily disable Xfce monitor power off via bash

I have set up my monitor to go off after some minutes of inactivity, but when watching an internet stream in a browser this is unwanted, thus I'd like to have bash command that to disable (and later ...
2
votes
0answers
631 views

fglrx and the broken atieventsd daemon (+maybe improve your battery life for AMD card owners)

I've been playing about with these things lately, and discovered a couple of things about the fglrx driver on Ubuntu that I thought worth sharing in the context of a broader question. The atieventsd ...
2
votes
0answers
1k views

Very long shutdown delay on 13.10

Whenever I shutdown or reboot, there is a very long delay (several minutes) before the system will shutdown. I was getting a nm-dispatch signal 15 so I thought the problem might be with network ...
2
votes
0answers
149 views

Simulate AC Power Plug/Unplug

can someone tell me how can I simulate AC power plug/unplug in Ubuntu 13.10? I would like to create a script, that do something when AC power is plugged/unplugged, but is really annoying to ...
2
votes
0answers
496 views

Battery indicator stuck at 98% percentage

Ubuntu 13.10 64-bit, used to work fine but lately battery applet with percentage says 98% at boot but doesn't drain (though obviously battery is draining). How can I reboot the applet/make it work ...
2
votes
0answers
2k views

Keep External HDMI Monitor ON

I am running XBMC (Frodo) on an Asus U47A laptop (Intel Sandybridge graphics) with Ubuntu 12.04. The laptop is connected to an older Phillips 27" tube HDTV via HDMI. What I would like is for XBMC to ...
2
votes
0answers
419 views

Apple aluminium keyboard hub is supplied to little power

I have an Apple aluminium keyboard with an integrated hub. On Mac OS X, I'm able to connect both my mouse and a USB pen drive while on Linux, the power limit is exceeded when connecting more than one ...
2
votes
0answers
110 views

How can I make multiple monitors go to standby independently?

I have a two-monitor setup. One monitor I use all the time, the other sometimes. I find myself switching the second monitor on and off quite frequently, so as not to be distracted by its contents. Is ...
2
votes
0answers
302 views

How to check what suspends? Lubuntu saucy

I have a Nokia Booklet 3G and I have a problem (not one, actually) with Poulsbo suspend/resume. I installed Lubuntu saucy (beta), which runs smoother than previous versions (it actually boots, unlike ...
2
votes
0answers
228 views

Apple Keyboard / Trackpad using too much power?

If I open powertop my keyboard / trackpad seems to be using 10+ watts of power at 100% usage at all times. I feel like this may be a bit excessive. Is it normal for the keyboard / trackpad on my ...
2
votes
0answers
58 views

How can I prevent close session/shutdown/reboot when certain console program is executing?

I want to disable close session/shutdown/reboot from Gnome (Unity/Lightdm) when lftp is executing. Is there any way? Perhaps with polkit?
2
votes
0answers
1k views

Disable HDMI sound out, for decrease power consumption

I have Ubuntu 12.04 on my laptop I'm looking for a way to decrease power consumption. This is output of powertop command Power est. Usage Events/s Category Description 1.30 W ...
2
votes
0answers
705 views

Lenovo u310 will not charge when turned on

I've looked around and had several friends have a look but we cannot figure this out. I am running Ubuntu 12.10 on a Lenovo U310. The laptop charges fine when the laptop is off but it will not charge ...
2
votes
0answers
347 views

12.10 shutdown/power-up issue

I have just upgraded to 12.10 on a Shuttle XPC which I use mainly for XBMC and have a problem with shut down/power up. When I shut down from within XBMC the box seems to shut down correctly, but it ...
2
votes
0answers
149 views

Getting the external hard-drive faster into standby

Currently, my external hard-drive is going into standby after 15 minutes of inactivity. How can I reduce this period to e.g. 5 minutes? Using Ubuntu 12.04 64-bit with Gnome Shell. Thanks in advance! ...
2
votes
0answers
409 views

How to make that closing the lid hibernate the system even if there's a secondary monitor connected?

I enjoy my Ubuntu laptop and the automatic hibernate on lid closing. Unfortunately the hibernation doesn't take place when closing the lid while an external monitor is plugged in. The monitor is only ...
1
vote
0answers
52 views

Laptop battery keeps discharging even after full charge (not switching to AC)

The laptop does not switch to AC mode after fully charging. I dualboot and this problem is nonexistent on Windows 10. But on Ubuntu 15.10 it just keeps discharging. I tried fully charging(which never ...
1
vote
0answers
32 views

Shut-down/Restart/Power-up “work” as Suspend on a Lenovo g50-70 running Ubuntu MATE 15.10

As the title suggests; when it comes to shut-down/restart both suspend the laptop unless I go with sudo -shutdown which works as expected. When powering-up, it goes through the GRUB (since I'm ...
1
vote
0answers
26 views

i3 throttled at 500Mhz when battery under 30%

I have the following problem. As soon as the battery drops below 30%, the CPU is being throttled to 500Mhz. As soon as I plug in the power adapter, it goes back to normal. The laptop is a Lenovo ...
1
vote
0answers
31 views

15.10 on Asus Zenbook: Hanging at shutdown with power plugged in

I have an ASUS Zenbook UX305 and I've installed Ubuntu 15.10 on it. Everything works fine, except that when I have the power cable plugged in and do a shutdown I think it must hang just as it's about ...
1
vote
0answers
26 views

How to make udev update battery status more often?

Ubuntu battery icon uses about 1-2 minutes before recognizing charger being plugged in or out. How to make the battery status update more often so that it recognizes the charger immediately. The ...
1
vote
0answers
30 views

My Battery Precentage keeps going Up and Down?

I recently started using Ubuntu 14.04.3 LTS on my Asus K53E laptop, and it was working pretty well since September. But in November I noticed the original battery started get old & hold less of a ...
1
vote
0answers
90 views

Ubuntu Gnome 15.10 doesn't suspend

I'm having an issue with Ubuntu Gnome 15.10 (also had the same issue with 15.04 before making a clean install of 15.10). When closing the laptop lid, the computer shuts down instead of suspending. ...