Questions related to power management, particularly power saving measures.

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3
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0answers
220 views

Laptop immediatly goes to sleep after disconnecting power

I've Lenovo S400 laptop, dual boot with windows 7 and ubuntu 13.04. The problem is that whenever I disconnect the power adapter, ubuntu shows that battery level is critically low and goes to sleep. ...
3
votes
0answers
406 views

Periodic clicking sound from PC speaker, revisited

I've read several posts around the web about this issue of random clicking sounds coming through people's speakers in Ubuntu. The most helpful reply for my circumstances seems to be Periodic clicking ...
3
votes
0answers
308 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
347 views

“power off and on” specifc usb port in Ubuntu 12.04

I am trying to power off and power on usb port in Ubuntu 12.04 without success. I tried the steps listed below: echo "0" > "/sys/bus/usb/devices/$port/power/autosuspend" echo "auto" > ...
3
votes
0answers
128 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
284 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
11 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
82 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
55 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
216 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
86 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
46 views

Viewing UPS status using apcupsd in net mode?

I have a headless server running apcupsd attached to an APC UPS. I also have several workstations running apcupsd in "net" mode to communicate with it. Is there a way I can configure the Power ...
2
votes
0answers
356 views

Laptop lid closed - with external Monitor

How to work on my other monitor when i close my laptop's lid? I connect my external Monitor (HDMI) to my laptop and then close the lid. Normally it (should) display everything on the external one. ...
2
votes
0answers
290 views

How to count battery cycles?

Like most user that have searched about knows, Manufacturers ACPI implementation is a mess. And for most of our laptops, battery infos are unavailable or wrong (on a dell inspiron 15z, the rate is ...
2
votes
0answers
318 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 ...
2
votes
0answers
207 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
33 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
730 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
418 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
329 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
620 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 ...
2
votes
0answers
652 views

Suspend on power button when session is locked

Is it possible to configure Ubuntu so that the power button causes suspend regardless of whether the session is locked or not? See here, for example. That configuration does not work, however, if the ...
2
votes
0answers
136 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
404 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
73 views

Laptop power saving or management in Ubuntu 14.04

Is there any sort of installation that can be added to provide power options for when I am running on battery? I wouldn't want to always be on power savings, so I would hope I could switch between Eco ...
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vote
0answers
37 views

How to calibrate the laptop battery on 12.04

Since a couple of days or so my laptop (asus n76vm) does a hard shut-down when the battery indicates 20% life left. It just cuts off the power, no shut-down screen or anything, making the hard drive ...
1
vote
0answers
36 views

Why do some of my powertop commands not work

I'm trying to make my powertop tweaks permanent. I ran sudo powertop --html and the I have a list of the commands I need to add to /etc/rc.local. I added them to /etc/rc.local and most of them work, ...
1
vote
0answers
20 views

slow machine when waking from suspend

I am using xfce4-power-manager to take care of screen locking and suspend when I close the lid of my laptop. It's a great little utility! However, when the machine wakes from suspend (which is to ...
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0answers
29 views

Prevent resume from suspend on lid open for 13.10

I'm running Ubuntu 13.10 on an Asus n550jv. I want to disable resume-from-suspend when the laptop lid is opened. The traditional answers to this involve echo "LID" > /proc/acpi/wakeup, but there ...
1
vote
0answers
15 views

Get info about power supply

I want to know what kind of power supply I have and what wattage it has. I tried sudo dmidecode -t 39 but that didn't show any specs. What do I need to do? I am on Ubuntu 13.10
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0answers
57 views

Hibernate dialog apears but doesn't hibernate?

Followed this Question and now whenever I press the button hibernate it just take me to the login screen. For critical battery I wanted it to hibernate on specific battery % and for that I followed ...
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0answers
7 views

unable to edit settings for dirty memory

Ive been reading for quite some time on trying to edit the dirty memory settings and for some reason i cant save changes to any of the files even when I use sudo. The biggest reason I want to change ...
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vote
0answers
49 views

Ubuntu 12.04, asus f550c : it do not go in power save mode

If I remove the charger from my laptop asus f550c, it do not go in power save mode, as I can see from the applet CPU frequency scaling indicator Indeed, usually if I suspend the laptop, it has very ...
1
vote
0answers
48 views

Screensaver not activating in 13.10

I'm running Ubuntu 13.10 64bit and the Unity desktop environment. I have my screen lock settings configured so it will blank the screen after 5 min. and lock it imediatly. The problem is it doesn't! ...
1
vote
0answers
33 views

How can one increase the timeout before the display dims when on the battery?

If I do not touch my computer (a Toshiba Satellite) for 15 seconds when running off the battery, the screen dims to the lowest brightness. I have already disabled "Dim screen to save power." I do not ...
1
vote
0answers
136 views

Battery issues - Lenovo Ideapad Z460

I've been using Ubuntu 13.10 on my Lenovo for more than 5 months without a problem. Yesterday I disconnected the AC adapter to take the laptop with me to the couch and it simply shut down. So I ...
1
vote
0answers
56 views

Fan noise after windows 8 dualboot ubuntu 12.04

I decided to dualboot Ubuntu 12.04 LTS on a laptop with preinstalled Windows 8. After some work i got both running. After the install the fans became alot louder (in both ubuntu and windows 8). So i ...
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0answers
248 views

Do the aticonfig --set-powerstate and aticonfig --lsp options no longer exist?

When I try either of these options I get aticonfig: unrecognized option '--lsp' aticonfig: parsing the command-line failed. Does the latest fglrx driver not make use of these power setting ...
1
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0answers
54 views

Laptop with Battery is faster than Power Connection at Ubuntu 13.04

Recently, I found a very strange phenomenon on my laptop. When the laptop is plug-in the power, then the CPUs work slowly, but when it is unplugged, i.e. it works with battery, then the CPUs work with ...
1
vote
0answers
56 views

Ubuntu+Gnome3 screen not dimming

I have an Ubuntu installation with Unity and Gnome3. When I log in using Unity, if the system is inactive for X minutes, the screen will dim. When using Gnome3 the screen never dims. Under ...
1
vote
0answers
317 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 ...
1
vote
0answers
86 views

Login screen do not enter power saving mode on 13.10

Since I upgraded to 13.10 my login screen does not enter power save mode: the screen is always on. Power saving works normally inside a session. Where can I set power saving parameters for the login ...
1
vote
0answers
112 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 ...
1
vote
0answers
96 views

Ubuntu on VMWare (OS X) doesn't suspend when inactive

I'm running 13.10 as a virtual machine under VMWare Fusion 6.0.2 on OS X 10.8.5, and also have a Windows 7 VM. My computer is a bit flaky, unfortunately, and occasionally it freezes to the point that ...
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0answers
19 views

Unjustified hibernation after suspend

Lately I have an issue with my power configurations. After my laptop returns from Suspend mode it goes straight to hibernation. Here is a pic after I repower the computer (note the power level): ...
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vote
0answers
94 views

How to find CPU shutdown temperature? (Think it's called TJMax, maybe not though…)

In Windows there is a program called CPU Temp which shows various CPU temperatures, one which being the temperature at which point the computer will shut down to prevent damage to the CPU. I have a ...
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0answers
127 views

Xubuntu not shutting down

I've installed the xubuntu-desktop package onto my Ubuntu 13.10 install. I like the look and the feel of the Xubuntu desktop however, I'm running into several issues: Shutting down / logging out ...
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0answers
103 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 ...
1
vote
0answers
121 views

xubuntu xfce power manager show pm icon for wireless mouse

I have just installed xubuntu 13.10 and except for a few things everything is great, but I have a slight problem with the pm icons. The xfce power manager shows one icon for laptop battery and another ...
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vote
0answers
70 views

Spurious resets on Ubuntu

I have a PC running Ubuntu 13.04 64bit, and I do weekly updates, so everything should be up-to-date. Everything is running fine, but sometimes, once-twice a week a complete reset happens. I think it ...