Tagged Questions

Questions related to power management, particularly power saving measures.

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0
votes
0answers
33 views

problems with my laptop when I turn machine

I've recently connect my laptop on another place in my house. When my laptop is booting, I saw this message: i915_bdw:exports duplicate symbol i915_release_power_well (owned by i915) hda_intel Error ...
1
vote
2answers
305 views

Asus UX31 ultrabook suddenly shuts down when below 50% battery

I've heard over the years that this computer had issues with the BIOS settings but that by 13.10 it had been cleared. It never used to happen on 13.10 but now that I'm on 14.04 it started showing ...
0
votes
2answers
568 views

Battery Power when running Ubuntu 14.04 LTS in dual boot

This is only a general question in order for me to get a better idea of my dual boot (windows 8 & Ubuntu) systems. I noticed that every time I run Ubuntu (which is becoming more often) the ...
2
votes
2answers
1k views

overheating and battery drain MacBook pro

I have just installed ubuntu Gnome 14.04 in a Macbook Pro 13" mid 2012, and I have some problems with my laptop. I have already installed TLP and macfanctld, but my MacBook still have the problem, ...
15
votes
1answer
386 views

What actions does Ubuntu trigger when battery is low?

When the battery is low, the screen gets dimmed after a few seconds already. This appears to be some special power-saving mode, and might be related to the time in ...
0
votes
1answer
192 views

Power off bluetooth: the LED indicator is still ON, is the radio module turned off?

I would like to have a Bluetooth adapter powered off at the startup, but at the same time to be able to turn it on when I need it. I have found this advice: Add rfkill block bluetooth into ...
0
votes
0answers
192 views

Weird behavior after upgrading to kernel 3.13.0-29 generic (3.13.0-29.53)

I'm already aware of another weird behavior which is if I time my laptop to shutdown while the lid is closed, if I try to boot it up again after its shutdown, it looks like its starting up and ...
1
vote
0answers
134 views

Laptop goes to sleep right after boot with lid closed and external monitor connected

The issue is following: laptop (HP6570p) with Kubuntu 14.04 installed, lid closed, external monitor is connected. Reboot. Laptop shows KDM login screen for a seconds and immediately goes to sleep. ...
10
votes
2answers
4k views

Does Ubuntu Touch consume less power than Android? [closed]

One of the problems of new OSs is power consumption. That is because power and performance requires a lot of tweaks and experience with the kernel, drivers and OS code-base on one hand, and a lot of ...
1
vote
1answer
717 views

xset: unable to open display

for the longest time after about 5 minutes my screen would blank out. Now the screen will go blank after 5 minutes but then 2 seconds after that it will light up white and keep the laptop ...
0
votes
0answers
90 views

Modify power / sleep setting via command line SSH

I want to change the power management sleep via SSH for a logged in user I set the value sudo -u user dbus-launch --exit-with-session gsettings set org.gnome.settings-daemon.plugins.power ...
2
votes
2answers
68 views

How to simulate closing the lid?

I have probem with my laptops monitor. When I move my laptop, sometimes screen goes white, blank. Then I have to open and close lid. It is very annoying because when I open it its moves and turn white ...
0
votes
0answers
40 views

Lubuntu resumes from standby half a second after going to sleep

So, I installed Lubuntu 13.10 on a Toshiba Satellite C855D-S5900, then I upgraded to 14.04. Whenever I tell it to sleep, or when the xfce4-power-manager tells it to sleep, it does so for about half a ...
0
votes
2answers
86 views

Broken package ubuntuone-control-panel-qt

An interrupted installation of updates resulted in ubuntuone-control-panel-qt breaking and now I cannot install or update anything. There seems to be an error in python2.7 - ImportError: No module ...
3
votes
1answer
202 views

Run a Script when Power Button is Pushed

I'm trying to run a script once I push the power button instead of having my machine turn off. I'm running Ubuntu Server 13.04, but any answers also need to work on Server 14.04. I've looked at ACPI ...
0
votes
1answer
39 views

Permanently end processes

The point is that i installed xubuntu and at one point i get on the screen one light bulb increasing and decreasing the light on the display (laptop) so i found in task manager that it is this ...
0
votes
1answer
166 views

The fans are noisy

I have an ASUS laptop that works fine: fast, no overheating etc. My problem is that the fans always run. I find this very annoying because in a silent room they are really loud How can I control ...
2
votes
2answers
1k views

xfce4-power-manager does not open

I recently changed my DE from Unity to XFCE. I really enjoyed it, but the power manager doesn't work. When I try to open it from the settings menu, I get the following error: Unable to connect to ...
1
vote
0answers
68 views

When the system resumes the default route is missing [closed]

A notebook running Ubuntu 13.10 (xfce), using wifi, and until recently when I shut the lid down it suspended nicely, and when I opened the lid it resumed, and auto-connected to the wifi. Now it no ...
1
vote
0answers
53 views

How to disable HP Envy light sensor auto-dimming

I swapped my windows OS for Ubuntu a couple of months ago. I had no idea HP Envy came with this annoying feature described here... ...
0
votes
1answer
1k views

Ubuntu 14.04 draining battery very quickly

I know there are several other questions very similar to this, but I feel that questions like this are specific to the system you are running and so there is not really a "one size fits all" type of ...
1
vote
0answers
174 views

Slow performance on LXDE due to power setting

I was very happy with my LXDE running on my Dell XPS 13 until, a few days ago, I found myself confronted with a dialgue box that presented the choices "desktop" or "laptop". It was set to "desktop", ...
0
votes
0answers
23 views

Why does usb power go off?

When i boot ubuntu from dvd, the mouse and keyboard work up to the point where i must choose to try or install ubuntu. The keyboard and mouse still have power while loading or installing. But when the ...
1
vote
1answer
94 views

What commands the suspend item in system menu really launch?

On my laptop trying to go in sleep mode using the Unity Sleep item (or closing the lid for what it is worth) does not work well (it goes in suspend mode very slowly and after that I am unable to wake ...
1
vote
0answers
73 views

Open lid to wakeup the system, get white screen

I got a new Dell M3800 laptop and I use gentoo+fvwm In /etc/acpi/lid.sh , I use echo -n mem >/sys/power/state to let the system sleep when the lid is closed. The problem is when I open the lid, I ...
1
vote
1answer
153 views

when I close my laptop lid and reopen my machine suspends

I have this weird problem with my new Xubuntu 14.04 installation. When I close my laptop lid, the box will suspend alright. After I decide to reopen my box to continue what am doing the screen will ...
0
votes
1answer
4k views

Xubuntu 14.04, Power Manager, Screensaver

When my computer is inactive, I keep getting a black screen and the screen goes into locked mode asking for a password, even though in Power Manager I have "Never" set for actions and monitor and ...
3
votes
0answers
33 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
2answers
5k views

loud fan on Ubuntu 14.04 [duplicate]

I have a Dell Latitude E5420 laptop which I upgraded from Ubuntu 13.10 to Ubuntu 14.04 a few days ago. I can't help noticing a new annoying behaviour of the fan: it repeatedly gets loud every 1-2 ...
1
vote
1answer
71 views

How do I get a warning before my laptop powers off?

In previous versions of Ubuntu, when my laptop battery hit somewhere around 20% power, the icon in the Gnome panel (I use Flashback) would turn red. Also, there would be intermittent warnings telling ...
0
votes
1answer
79 views

“Sometimes” fails to go into suspend mode

I have been using Ubuntu since 13.04. I am using Ubuntu 14.04 now. When I first installed Ubuntu 13.04, there was no problem about suspend mode. However, since some time ago, suspend mode has started ...
2
votes
0answers
111 views

Sleep mode problem [closed]

I've jumped the ship and I am sinking into dark waters of Linux.. :-) Hopefully to see bright future. I need some assistance or guidance as I am new to linux. I have installed Latest version of ...
1
vote
0answers
604 views

Xubuntu 14.04 resume form hibernation/suspend error [closed]

Every time the system comes out of hibernation/suspend, I get the following error: [107691.012100] dpm_run_callback(): pmp_bus_resume+0x0/0xa0 returns -19 [107691.012101] PM: Device 00:07 failed to ...
1
vote
0answers
110 views

Battery Threshhold

I recently installed Ubuntu 14.04, which is really nice but my battery is not charging past 59%. I recall tinkering with Lenovo battery management on Windows to reserve the life span but I wiped ...
0
votes
1answer
117 views

UPower reports Incorrect Capacity

I've just replaced my old Netbook battery with a new one of higher capacity. It was a cheap battery off of Amazon which clearly reads as a 5200mAh battery but Ubuntu reports the battery as being the ...
1
vote
0answers
65 views

Turn off battery control in Ubuntu 12.04

I own a Lenovo Ideapad Yoga 11S that suffered from battery failure when i poured coffee over the keyboard. I have checked the battery voltage manually and it is full. The computer also seem to be ...
0
votes
0answers
224 views

Thinkfan config for x240

I just installed ubuntu 14.04 on my ThinkPad x240 and was playing around with thinkfan(see http://thinkwiki.de/Thinkfan [German] and How to control fan speed?) a bit. However, I was not able to find a ...
2
votes
1answer
2k views

xfce4-power-manager suspend not available for lid close

Running a clean install of ubuntustudio 14.04 the suspend and resume works when using the power button or selecting it from the user menu but is not available in the xfce4-power-manager-settings. Only ...
3
votes
4answers
777 views

Different fan behaviour in my laptop after upgrade, what to do now?

After upgrading from lubuntu 13.10 to 14.04 the fan of my laptop seems to run much more often than in 13.10. When it runs, it doesn't run continously but starts and stops every second. fwts fan ...
0
votes
1answer
146 views

Laptop screen goes blank after 33 seconds of inactivity

I have a Lenovo Thinkpad T60 running 12.04.4 LTS, Precise Pangolin; the desktop is KDE. Starting today, the display goes blank after 33 seconds of inactivity. Clicking or even moving the mouse, or ...
-2
votes
1answer
481 views

install bettery drivers for ubuntu 14.04

I have recently installed ubuntu and it seems ve[]ry power consuming. after installing it it heats up too much. is there any battery drivers available here for ubuntu. my leaptop configuration is: ...
0
votes
0answers
104 views

Dell Inspiron n4110 Doesn't Start with recurring low battery beep

Took the Dell n4110 Inspiron to school today, I opened it up, and when the low battery noise beeped I realized I forgot to charge it and shut the lid immediately as it was loud and in the middle of ...
0
votes
0answers
36 views

How to restore default power plan to ubuntu 12.04 lts

I've been having battery plan issues. When my laptop is unplugged ubuntu becomes slow. When it's plugged everything is fine. I assumed something was wrong with my battery plan or something like ...
0
votes
0answers
150 views

CoolSense for HP Envy dv4-5266LA on Ubuntu 14.04

I recently installed Ubuntu 14.04 on my HP Envy dv4-5266LA laptop. I have a problem because my computer is too hot, and the battery drains very fast. Please help to solve this problem that may be ...
1
vote
1answer
319 views

Standby sometimes needs hard reset on Ubuntu 14.04

After setting up a fresh Ubuntu 14.04 on a Lenovo W540 I sometimes experience standby problems. About 50% of the time standby works fine. I close the lid or click standby on the menu and it goes to ...
1
vote
0answers
196 views

KDE does not notice laptop running on battery

After upgrading to Kubuntu 14.04, KDE does not notice that the laptop is running on battery! The battery icon continues to show the 'charging' symbol. But the battery level shown in the icon keeps ...
3
votes
1answer
224 views

Ubuntu wakes up automatically after suspending

I'm having this problem since Ubuntu 12.10/13.04 i think, now I have 14.04 and the problem stills. When I click the suspend button, the Ubuntu suspends normaly but after 1 or 2 seconds it turns on ...
1
vote
0answers
223 views

Light locker isn't saving my changed settings

I installed Xubuntu 14.04 on my Asus N10J Computer, and Light Locker and it isn't saving my settings changes to it. I have tried restarting my computer, logging out... it doesn't work. I want to ...
0
votes
0answers
461 views

Lenovo Z510 working extremely slow on battery

Ubuntu 12.04 on Lenovo Z510 i5. When AC power adapter is plugged in, everything is fine, the system is working fast. When i unplug the AC adapter, ubuntu is going to work extremely slow. I ...
1
vote
0answers
1k views

Ubuntu Server losing network connection

My issue is simple, yet really complex. I recently installed Ubuntu server on an old stripped down laptop. It's a SAHARA LE1D, 1.4 Intel Celeron m I think. It's an old one, but still good. The eth0 ...