Questions related to power management, particularly power saving measures.

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4
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0answers
898 views

How to count battery cycles?

Like most users that have searched know, Manufacturers ACPI implementation is a mess and for most of our laptops, battery info is unavailable or wrong (on a dell inspiron 15z, the rate is divided by ...
4
votes
0answers
503 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
843 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
39 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
62 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
760 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
304 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 ...
3
votes
0answers
49 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 ...
3
votes
0answers
441 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
176 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
316 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
80 views

hp xw4200 fan speed

I just installed Ubuntu 14.04 on my old HP xw4200 workstation (p4 3.4 GHz, 3 GB of RAM, Ati FireGL 5200). The install worked without any issue and the system seems responsive. The problem is that ...
2
votes
0answers
136 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
50 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
334 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
112 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
90 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
466 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
112 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
365 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
1k 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
652 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 ...
2
votes
0answers
324 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
106 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
280 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
183 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
48 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
274 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 ...
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
594 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
345 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
147 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
9 views

Why can't I select Suspend as on-lid-closed action for AC?

When I go to "Power" and try to select "suspend" when laptop lid closed, on AC power, I find that suspend is greyed out, disabled. I don't understand why. Suspend works fine when on battery. I'm ...
1
vote
0answers
21 views

What is the script that executes soon after we plug in AC adapter?

My Dell Inspiron laptop's fan makes a lot of noise when i execute any heavy application process. The fan continues to make the noise till i plug in the AC adaptor power cord with power in. It ...
1
vote
0answers
33 views

Screen Dimming Anomaly

My Lenovo G780 with Ubuntu 14.04 is fine when the AC charger is plugged in. However, when unplugged, if my mouse does not move for ~12 seconds, the screen dims a bit, but this is not detected by my ...
1
vote
0answers
35 views

Does the boot option acpi=off can overheat my laptop?

Help please (excuse my english) I recently bought an ASUS X453 (quad core intel inside pentium, 4GB RAM, 500GB Disk) and replaced Windows 8.1 with Ubuntu 14.04. After a lot of trouble with the ...
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vote
0answers
28 views

MacBook Pro 11,1 Magsafe connector gets hot

I've installed Ubuntu 14.04 on my Macbook Pro 11,1 and updated the kernel to version 3.19.8. I have a problem now. If I plug in the Magsafe connector the connector and the surroundings on the macbook ...
1
vote
0answers
20 views

Subscribe for DBUS event of screen power off

My MacBook Pro has a keyboard backlight which is pretty awesome, but there's a slight bug: the screen turns off after a given amount of time, but the keyboard backlight stays on. I've copied over ...
1
vote
0answers
31 views

MAAS Power-on problem IDRAC IPMI 2.0

I'm currently having a problem in getting MaaS (v1.7) to properly provision a Dell PowerEdge R630 server. The MaaS vm itself is able to detect the server automatically, and once the dell server boots ...
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0answers
72 views

Ubuntu 14 LTS server going to sleep/shutdown

We recently transitioned from Ubuntu 12 to Ubuntu 14 server installations and started to notice that the servers are occasionally go to sleep after couple of hours to days intermittently. ...
1
vote
0answers
198 views

Laptop with Ubuntu Mate 15.04 screen dimming after 10 seconds

I watch movies on Youtube, Popcorn or XBMC and after 10 seconds when I have my laptop disconnected from power the screen dims. I know that there is an option in dconf-editor for longer timeout but ...
1
vote
0answers
52 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 ...
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vote
0answers
97 views

Need to press the power button twice for Ubuntu 15.04 to boot

I have a dual boot set up (Windows 7/Ubuntu 15.04). I've recently upgraded from 14.04 LTS to 15.04 and since then, I have to press the power button twice. The first time it goes to GRUB without any ...
1
vote
0answers
366 views

Reduced battery life with ubuntu 15.04

I'm using a Lenovo Z-5070 Ci7. I had a battery life of nearly 4 hours when I was using Ubuntu 14.04 LTS. After updating to Vived Vervet (15.04) my battery life is reduced to nearly 2 to 2.5 hours. ...
1
vote
0answers
238 views

Xubuntu 15.04 goes into sleep after powering up

Upgrade from Xubuntu 14.10 to 15.05 (Update history : 13.10 -> 14.04 -> 14.10 -> 15.04). The upgrading worked well. After rebooting the machine (Dell Inspiron 6000 - 10 years old) went automatically ...
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vote
0answers
33 views

Ubuntu sleeps when power cable is removed

I just installed Ubuntu 14.04 on a Macbook 5,2. It works fairly well except that when the power cable is unplugged the desktop logs out, prompting the password menu and in less than a second the ...
1
vote
0answers
118 views

How to use UPS with Ubuntu 14.04

Hello I have a UPS but can not see what procedure the battery and how to remain percent spending. Here I attach some photos looks like the battery of Ubuntu 14.04 The battery once it exists, and ...
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vote
0answers
105 views

Ubuntu 14.04 power manager not working

The power manager has suddenly stopped working on my Ubuntu. It shows plugged in and 100% charged all the time. I'm using dual-boot with Windows 7 and the Windows power management tool is working ...
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vote
0answers
26 views

pm-suspend works, but clicking on “suspend” from GUI menu does nothing?

If I run sudo pm-suspend, it suspends correctly, and resumes too. No issues. But the OS timeout setting of "5 Minutes" from the "Power" menu in settings does not suspend the machine. Also, the GUI ...