Questions related to power management, particularly power saving measures.

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4
votes
1answer
1k views

Hard drive overheating on an Asus K53SV

Hello I am new to Linux and using Edubuntu 12.04 lts 64 bit from past 7 days, on my laptop( asus k53sv. core i7,8gb ram,750 gb , nvidia gt 540 m.) I have managed to solve nvidia's optimus driver ...
0
votes
1answer
296 views

Display dims when not in use and it turns off when not in use or while watching movies

I have Ubuntu 11.10 and am using it on dell xps laptop now my problem is that Ubuntu does not provide power utility form where I can manage brightness of my screen, when to turn it off, after how much ...
6
votes
3answers
6k views

how can I reset the battery statistics for the powermanager?

I changed my batteries and the battery statistics of the GNOME manager got skewed. Where would the files having the battery statistics be?
2
votes
1answer
142 views

Why can't I poweroff my computer if it isn't connected to a power supply?

When my computer is not plugged in the poweroff function doesn't work. It just boots up after poweroff. Whenever I poweroff by the way of GUI clicking or typing command poweroff or halt, my computer ...
3
votes
3answers
13k views

How to make my screen brightness not change when I plug my laptop in

I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness ...
6
votes
2answers
2k views

Is it possible to turn the video card off in a laptop to use it as a headless server?

Since I recently upgraded my IT infrastructure, I decided to use my old laptop as a home server. The problem is that the machine sports a powerful nVidia card that even at idle generates enough heat ...
5
votes
5answers
9k views

Is Ubuntu Battery Management Better Than Windows?

Is Ubuntu battery management better than Windows ? I have noticed that in Windows 7 a fully charged battery shows 3:30 minutes but in Ubuntu it shows 2:00 hours ... !!! so what is the power ...
5
votes
2answers
13k views

Put HDDs in standby after X minutes using hdparm doesn't work

I use Ubuntu 12.04 on a home server. There are 5 hard drives: one SSD with the OS and 4 HDDs (Samsung HD204UI) configured as a RAID5 using mdadm. I don't need the RAID very often (say, about once per ...
3
votes
1answer
513 views

How can I get the computer to sleep while at the login screen? (No users logged in.)

I have my computer set to "Suspend when inactive for 30 minutes" in system settings. This function works fine if a user is logged in and does not do anything for 30 minutes. However, if all users are ...
1
vote
2answers
1k views

How can I restart unity after I resume from suspend?

This may sound like a stupid idea but I like to have a transparent top-panel which can be configured in Compiz Config Settings Manager, but when I resume from a suspend it's no longer transparent and ...
6
votes
1answer
685 views

Can you help me write a script to set a new default brightness for the screen/keyboard after login?

On my Macbook Pro Ubuntu alsways boots with... keyboard brightness at maximum illumination screen brightness at maximum illumination ...both which I need almost never during normal usage. ...
2
votes
3answers
9k views

How can I turn off hard disk power management in 12.04?

In Ubuntu 12.04 the power management does not allow control of hard disk spinning preferences. As a result, when the laptop is on battery the hard disk continues to stop spinning to save power. I ...
4
votes
2answers
4k views

Overheating using a i7 Intel processor while using Ubuntu

I use a Intel i7 Dell-laptop. I installed Ubuntu 12.04(64bit) from scratch. I realized the CPU temperature increased immediately(it's not difficult to detect temperature with this computer only by ...
3
votes
4answers
9k views

The battery indicator in Unity panel not showing up

I installed Ubuntu 12.04 with Wubi. Well after being completely dazzled with the amount of free content in the Software Centre, I decided to go deeper and start messing with settings. Well after ...
5
votes
2answers
1k views

Ubuntu 12.04 LTS fails to recognize my laptop as laptop [closed]

This is probably going to sound like a rookie question, but I have never ever experienced such issue. I had Ubuntu 11.10 without Unity installed on my old laptop Thinkpad Z60m. Few days ago, I got ...
11
votes
1answer
9k views

How can I workaround the XFCE4 power manager being broken?

I just did a clean install of 12.04 on my netbook, then installed xubuntu-desktop. (The reason for that is the showstopper bugs in 11.10 Unity -- like menus not working, or the launch bar capturing ...
1
vote
0answers
578 views

Is wake up from standby possible via script or schedule? [duplicate]

Is it possible to cause Ubuntu to resume from standby or sleep mode to run a scheduled task like at job/crontab? (hibernation seems to be ruled out in another question) Can a script be written that: ...
0
votes
2answers
713 views

Screen goes blank/corrupted/garbled when pressed brightness buttons on dell inspiron 14r in 13.04

When i press brightness key little faster the screen turns black(when graphic driver is not installed) or corrupted(when ati driver is used) and i have to forcefully restart again.This happens even ...
1
vote
1answer
1k views

How to permanently switch of KDE Power Management warning about battery recall

I have Kubuntu 12.04 installed. Each time I boot I receive a notification that the battery I am using has been recalled. This is not actually the case, as the recall doesn't apply to T61 model of ...
0
votes
3answers
994 views

Toshiba Satellite l755 overheats

I really want to use the new unity and the integration options, i'm running a toshiba satellite l755-s5349, but, it keeps my laptop on a very high temperature, with very high peaks specially when i ...
2
votes
1answer
849 views

pm-powersave is called on each boot

On my Ubuntu (server) installation I'm tweaking some power parameters. But most of these parameters such as /sys/class/scsi_host/host0/link_power_management_policy keep getting reset. I have inspected ...
3
votes
1answer
1k views

Battery time decreased on an HP ProBook 4530s

I have HP ProBook 4530s. In Windows 7 after installing all HP drivers the 6-Cell battery works perfectly for 2+ hours but in Ubuntu 11.10 and now in 12.04 the battery time is not sufficient. It works ...
0
votes
1answer
2k views

Fan working non-stop on a Dell Inspiron 5110

First of all i'm new at ubuntu. I've only tried 11.10 before 12.04. Since then my notebook's(Dell Insprion 5110) fan was working non-stop. And also battery lasts in 2 hours. So i made a research. Some ...
0
votes
1answer
758 views

Poor battery life on an Asus U45J

I have a question about ubuntu working on my laptop. After I installed ubuntu 11.10 on my laptop I noticed that my laptop battery life time reduced to 2.5h when it is full, while its life time in ...
0
votes
1answer
499 views

Am I using all the power of my PC in Ubuntu? How can I find this out?

My computer has a CPU with 4 cores and 4GB RAM. What I want is to find out, if I am using all the available power that my PC offers to me? How can I do this?
2
votes
3answers
3k views

Suspend and resume not working on an HP dv7 [closed]

this one is driving me nuts. My HP dv7 laptop isn't resuming from suspend and hybernate. On suspend - resume it leaves me with a black screen. On hibernate it succesfully loads the images and then it ...
1
vote
2answers
7k views

NVidia Doesn't Show Up in Additional Driver + Power Regression Issue in Ubuntu 12.04

Thank you for reading. I am still having issue with power regression on my Asus K53SV after doing a fresh install of Ubuntu 12.04 (I have this issue with Ubuntu 11.10 as well). Thus a helpful guy told ...
37
votes
3answers
100k views

Shutdown does not power off computer

I recently upgraded from Ubuntu 11.10 to 12.04. If it makes any difference, my system is a Dell Inspiron 1520. I encounter a problem whenever I shutdown or restart; it kills all running processes ...
0
votes
1answer
1k views

Ubuntu 11.10 not suspending automatically

New: After digging around a bit more, I found out the problem is much more that the system is not suspending on its own, although suspending manually (shutdown->suspend) works well. I used the suspend ...
2
votes
0answers
1k views

Battery power indicator bug and high power consumption on 12.04 [duplicate]

Possible Duplicate: Battery drain on ubuntu is fast I have a Samsung NP530U3B-A01: - intel core i5 2467M - 4gb ram - intel hd 3000 - 500gb hard drive It's dual boot with windows 7. ...
2
votes
2answers
1k views

How to fix high power consumption on a hybrid-graphics laptop

I have a hybrid Radeon 6600M/Intel laptop, and I've installed the Ubuntu beta 2, hoping that I'd get a better battery life but I still seem to be getting high power consumption. With radeon ...
-1
votes
1answer
762 views

Why Won't my computer turn on? [closed]

Yes, as dumb of a question as it is. This is the only place I knew of to get a fast answer. Pressing the power button does nothing. Power cord connected and circuit is getting power. If I flip the ...
2
votes
0answers
5k views

Screen stays black after Waking Up from Suspend [closed]

I installed Ubuntu 12.04 on HP DM4 Beats Edition and the suspend and wake up were working perfectly, but after an update I can't see 'Caps Lock' light, Wireless light etc, the fan is running but the ...
7
votes
3answers
4k views

Has the Ubuntu overheating problem for Sony Vaio solved? [closed]

I used Sony Vaio VPCEA23en with graphics card ATI Radeon HD 5145 and have been using Ubuntu 11.10 and recently upgraded to 12.04 beta, however the problem of overheating (60-70) still persists. I have ...
3
votes
6answers
2k views

Battery life low on notebook using ubuntu 11.10 vs. windows 7

Im using a brand new Dell XPS notebook (bought mar 2012) which has 4.5 hrs battery life using a 6 cell battery-when i use windows 7. The machine uses an Intel core 17 2670qm processor, and a 64 bit ...
1
vote
1answer
179 views

How can I assign a command to a key?

I want to assign a special command to be executed when I press the F15 keyboard on a MAC keyboard under Ubuntu. This is the key on top of the PgUp key on the aluminium keyboard for Macs. I use that ...
1
vote
2answers
170 views

Why does waking from hibernate take nearly ten minutes on a Dell XPS 15 L502x laptop?

Im running 11.10 64bit on a Dell XPS 15 L502x laptop. It uses an i5 proc and has 16Gb ram. Whenever I close the lid on the laptop I have it set to hibernate as I want to continue whatever I was ...
0
votes
3answers
551 views

Precise Beta 2: Screen won't power down

I am running Precise beta 2 on a Dell Latitude E6410 with nVidia graphics. I have set up the power management to turn the screen off after 10 mins of inactivity. Instead of it turning off, it simply ...
0
votes
2answers
432 views

Laptop goes off (not shutdown), which log file should i check?

I have problem with my Lenovo x121e - goes off and i can't start it immediately again. I must wait 3-5 min and then works again. CPU Temperature was okay, about 65°, HDD Temp too - 37°. Badblocks ...
23
votes
3answers
9k views

How do I disable the sleep button on my keyboard?

I have a "power button" on my keyboard that enables standby or hibernate. I can't find the mapping of this key anywhere in "sytem settings>Keyboard", "system>power management", "compiz config> or ...
1
vote
1answer
532 views

Shutting down with power button without x11-session

When pressing the power-button inside a (gnome-)session, ubuntu asks me what to do and shuts down after 60 seconds anyway. No problem so far. But if i'm not logged in in a gnome-session (for example ...
0
votes
1answer
139 views

worth installing Jupiter on Acer Apire Revo?

Would it be worth installing Jupiter (power and device control) on my Acer Aspire Revo net-top ? Would it help my system any or make a difference ?
3
votes
2answers
661 views

Is there any need to install nvidia graphics drivers if I am running Ubuntu Server?

I have googled this question and arrived at no answer, so here I am. If I am going to be running Ubuntu Server, (as before I was running 10.04 Desktop) is there any need to install the Nvidia drivers ...
0
votes
1answer
534 views

How to keep SSH server running with laptop lid closed

I've changed the power management settings on my Ubuntu 10.10 server laptop to keep running with the lid closed but I loose any attempts to connect to it by ssh. Is there a way to change this so that ...
9
votes
2answers
2k views

Where does gnome-power-statistics get its data from?

Gnome-power-statistics is run when you click on the battery icon in the top panel of a laptop. It shows battery history such as charge and rate, as well as statistics such as discharge profile and ...
0
votes
3answers
366 views

Compile new kernel for ubuntu 11.10

My laptop is hp dv6 6080 with sandy bridge cpu. Linux has power issue and use more battery but i see in sites that new kernel doesn't has this problem. Is this true? if i compile this kernel for ...
0
votes
3answers
4k views

Automatic Reboot After Power Failure

I want a machine that loses power to automatically reboot when power is available. I've looked around and haven't found a solution that works for 11.04. Purportedly at one point you could do: echo ...
2
votes
1answer
661 views

How can I improve the power usage of my home Ubuntu server?

So, I have a home Ubuntu server, that I only use rarely, but sometimes use remotely. I would like to have it minimize the power usage, even if it requires a minute to access remotely, as I only use it ...
1
vote
1answer
258 views

Lost power while upgrading to 12.04, how do I fix the botched install?

I was upgrading from 11.10 to 12.04 just for kicks and lost power to the PC while it was about 3/4 done with the install section of the upgrade. I can login successfully and launch apps from the ...
2
votes
2answers
2k views

Cannot resume from hibernate (s2disk)

I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to ...