Questions related to power management, particularly power saving measures.

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3
votes
1answer
2k views

How to shutdown the computer with physical power button or by closing the lid?

Does anyone know how to fine tune power settings in 11.10 such that I can turn off the power immediately (no dialogue box) by pressing the physical power button or closing the lid? It was easy to do ...
4
votes
2answers
5k views

Closing the lid isn't toggeling standby anymore after update in Lubuntu. How can I fix that?

On my netbook closing the lid only leads to lock screen and not to standby in Lubuntu. That happened after the update on 11. 0. In 11.04 that worked without problem. Also, in 11. 10 Ubuntu (Unity) ...
3
votes
2answers
13k views

How to disable screen dimming after inactivity when this is already disabled at system settings?

When my Dell Vostro laptop is connected to the power, the screen is dimmed after 10 seconds. This is very annoying. When my laptop is running on the battery, the screen is not dimmed after ...
2
votes
2answers
586 views

Is there a specific way to extend battery life in a Toshiba netbook?

I'm using Lubuntu 11.10 on a Toshiba NB-500. The new Kernel 3.0 partially solved some issues related with overheating and absence/or/unstable wi-fi connection. But I see no improvements in power ...
6
votes
4answers
13k views

Closing lid does not suspend laptop

I'm on a Lenovo T400 laptop. In the past I had suspend problems on every second version of Ubuntu (at least it feels like it), but in 11.04 it was working perfectly. Now, after the upgrade to 11.10 ...
3
votes
1answer
1k views

How do I make the power button shut the laptop down without asking?

The energy options screen, oddly, doesn't have an option for what to do when the power button is pressed! Translating the three options: "Suspend when inactive for:" (it's set to not suspend) "When ...
1
vote
2answers
1k views

How do I prevent a HP Pavilion DV6700 from overheating?

Well this version makes my system so hot that I can use it anymore. A friend i introduced this version to wants me to completely remove Ubuntu. Specs: HP Pavilion DV6700 Windows 7/11.10 64bit Intel ...
2
votes
1answer
638 views

Why shouldn't you enable laptop-mode when on AC power?

I'm looking at ways to reduce the amount of power used by my laptop, and one of the things I came across was enabling laptop-mode. Apparently this is enabled when I'm not on AC power, but I'd like to ...
0
votes
1answer
211 views

Power management shortcut

I am looking for a custom shortcut for showing power managemnt ( like ctrl + alt + delete in ubuntu 10.10 that showed some tools for shutdown, suspend , restart , ... ) I don't know which command ...
5
votes
1answer
2k views

How do I keep my screen from going dim when idle?

Apparently, the new version of Unity is based on Gnome 3. Apparently, Gnome 3 decided to do away with a huge chunk of the options available to me. It used to be that when I went to System Settings -> ...
0
votes
1answer
571 views

Power Manager Doesn't Show Battery Charging

I just upgraded to 11.10 last night and I noticed that power manager doesn't update the battery charge %. It's been plugged in for hours and the energy hasn't changed (it neither went up or down). Is ...
3
votes
3answers
11k views

How do I add pcie_aspm=force to my boot options? [duplicate]

Possible Duplicate: How do I add a kernel boot parameter? I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery ...
15
votes
7answers
15k views

Laptop minimal power consumption tweaks [duplicate]

I've recently installed Ubuntu 11.10 on a new Lenovo X220 laptop with a 9-cells battery. I have a trans-atlantic flight coming up, and I would like to use my laptop during it. Lenovo claims that ...
6
votes
2answers
3k views

How do I get “restart” option in the shutdown menu in Unity?

The dropdown menu I get when I click on the gear link in the top right corner only shows these options: Lock Computer Logout Suspend Hibernate Shutdown There is no "restart" or "reboot". How can ...
0
votes
1answer
516 views

How can I tell if I'm affected by “The 11.10 Battery Power Drain”?

I've seen hints at some kernel power bug affecting battery life if updating to 11.10 -- as for example here. I relation to this, I have three questions: How can I tell if my machine is affected ...
19
votes
6answers
37k views

How do I completely turn off screensaver and power-management?

I looking for a method to turn-off the screensaver and powermanager but from the command line. I'm aware this can be done via the GUI screen - but can this be done via the command line or via some ...
0
votes
1answer
585 views

11.04 -> 11.10 update problems (Power, Display, Resolution)

I have serious issues with Ubuntu (64 bit) after upgrading system from 11.04 to 11.10. My hardware: Asus G53SW (i7-2630QM, 8GB RAM, GF GTX460M) Power (UPower) - when I change behaviour of lid ...
-1
votes
2answers
300 views

My computer will no longer suspend or shut off when I close the lid [closed]

This is somewhat annoying. I have an old laptop and the screen on it is shot, so now I have an old monitor hooked up and it works fine. Before the upgrade I had it set so that when i closed the lid on ...
2
votes
3answers
4k views

Sound system is eating away the battery

In my laptop the sound code is running at 100% even when I am not playing anything. It is causing my palm rest to hit significantly. While I do not face the issue on windows machine where I am using ...
43
votes
6answers
53k views

How do I modify the power options?

When I press the power button a dialog opens, but I want to shutdown the system without receiving "Do you really really want to shutdown?". How can I choose a direct shutdown action on a pressed power ...
3
votes
1answer
1k views

Display brightness goes two shades darker if I am idle for 10-11 seconds

The display brightness comes down 2 shades darker if I'm idle for 10-11secs!! It automatically dims itself :o and it's very distracting! Earlier this could be avoided through power management, by ...
2
votes
3answers
2k views

Computer shuts down when unplugged

I have an MSI Wind U100 netbook (they call it a notebook). Every time I unplug the AC adapter the machine shuts down as if the battery is dead. I get a notification that says "battery is critical and ...
1
vote
1answer
2k views

Replacing 11.10 gnome power manager with 11.04 or XFCE power manager

I am not too keen on the new 11.10 power manager control - there are less options I can tweak. Does anyone know how to replace the 11.10 gnome power manager/control with the one that comes with 11.04 ...
6
votes
2answers
2k views

Why is wireless down/strange after switching to battery or closing/opening the lid?

I noticed that, when I unplugged my laptop, or closed/opened the lid, my wireless connection dropped, every time. I tracked it down to pm-powersave, and made it stop, see below. This could also ...
1
vote
2answers
2k views

Do I need to add a boot parameter to work around this kernel power bug on a Sony Vaio VPC-EH1S0E?

If i with dmesg | grep -i aspm have this: [ 0.503709] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it [ 0.673564] ACPI _OSC control for PCIe not granted, disabling ...
5
votes
1answer
800 views

Prevent temporally suspend/hibernate from script?

Is there any way to prevent temporally suspend/hibernate from a script? I want the screen to enter in powersave mode when appropriate, but the computer doesn't stop. Caffeine doesn't allow this: it ...
3
votes
3answers
2k views

Sandy Bridge Power Regression

Ubuntu 11.10 drives my Sandy-Bridge laptop fan crazy, just 1 week before official release! I thought it was a beta issue when testing daily builds on a regular basis, but I guess I was wrong... Is ...
3
votes
0answers
580 views

How do I stop my netbook from sleeping when I pull the power? [closed]

When I'm using my computer and unplug it, I would rather not have it go into sleep mode which it currently does. How do I fix that? A concrete example of this is the last time where I was actively ...
1
vote
1answer
901 views

Ubuntu 11.10 powers down automatically [closed]

Ubuntu 11.10 automatically powers down after a period of non-use. For example, I can't leave my computer on over night when I am downloading large files because it shuts down. Is this a bug or is ...
2
votes
2answers
2k views

What's the best way to optimize power management? [closed]

I decided to give Ubuntu a chance on my laptop (actually, it's a netbook). This netbook is capable of 7 hours battery life on Windows 7 and I only get around 3 hours with Ubuntu. I'm a newbie, but I ...
2
votes
1answer
627 views

How does Jupiter work

Jupiter is a powersaving applet, which can switch between maximum power, high power and save power. Definitely it does more than just setting the CPU speed, as the recommendations of powertop change ...
0
votes
1answer
562 views

Why does my laptop get too hot when the AC power is plugged in?

im using natty and when my computer is on AC power it gets very hot (no independent graphic card). But when im with only battery, the machine itself is quite cool. I've just tried sometime on the ...
1
vote
1answer
867 views

Monitors won't sleep (power management) if synergy or synergyc? is running

Similar question to Monitor won't enter power save mode , however I only experience the problem under synergy. Screensaver settings work, but the monitors never go to sleep. When synergy is not ...
1
vote
2answers
2k views

Why does my laptop think my battery is dead?

I've got about a 3 or 4 hour battery life on my laptop. I've had Ubuntu 11.04 on it for a week or so now, and yesterday, it started telling my I had a critically low battery (.3%), and suspends. When ...
6
votes
5answers
7k views

How to permanently disable monitor power saver using the command line?

I have tried as following: 1. Turn off: export DISPLAY=:0.0 && xset dpms force off 2. Turn on: export DISPLAY=:0.0 && xset -dpms Which works but that is a temporary solution, which ...
6
votes
7answers
14k views

How can I hibernate from GNOME Shell?

GNOME Shell doesn't have an option to hibernate in the session menu. I checked the GNOME Shell Cheat Sheet but hibernate is not mentioned there. How can I hibernate my machine from within a GNOME ...
2
votes
3answers
3k views

Unable to suspend - power manager vanished

Recently, after a few upgrades, I find that the power-management applet indicator has vanished, and the option of Suspend has suddenly changed to Power-off. I can still suspend through sudo ...
2
votes
0answers
735 views

How to enable the hibernate option? [closed]

I am not getting Hibernate option in ubuntu 10.04. Can anyone say what the problem might be and how to resolve it? (btw I tried this https://help.ubuntu.com/community/SwapFaq but it didn't work for ...
3
votes
3answers
258 views

Maximal power-saving on a laptop when sleep/hibernate is not possible? [duplicate]

I use a very portable laptop with Ubuntu running. On that laptop, neither sleep nor hibernate works reliably (it works sometimes and it doesn't the other times). I'm not asking how one can get them ...
2
votes
1answer
932 views

What is Kworker and SignalSender

What is Kworker and SignalSender and why its utilizing more CPU. The stats from Powertop gave these numbers. How can I optimize it. Top causes for wakeups: 28.4% (420.4) PS/2 ...
2
votes
1answer
153 views

How do I enable S3 state?

I'd like to save my computer state in RAM and not on the HDD. How can I obtain this in 11.04?
0
votes
1answer
492 views

Will Samsung laptops be fully (OOTB) supported by Ubuntu?

Power management like: suspend, hibernate, open/close LID, optimal ("healthy") disc activity, internal modem, backlight control, FN keys etc. Will it be fully supported by Ubuntu out of the box? So ...
1
vote
1answer
4k views

Is there a way to stop the display from turning off?

I'm using the latest version of Ubuntu 11.10, and although I've disabled the lock screen options and checked the power settings, my display turns off after around ten minutes. That wouldn't be so bad, ...
4
votes
3answers
498 views

ACPI 30k+ interrupts per second

My computer is currently doing something like 30k+ interrupts per second. This causes battery issues as well as the CPU being always stuck at the highest speed, making it very hot (overheating.. 75C ...
1
vote
2answers
3k views

How can I actually change my “Power Management” settings?

I go into settings -> Power Management, trying to change the "Put display to sleep when inactive for:" and "Dim display when idle" settings. The changed settings are saved -- if I come back to the ...
4
votes
2answers
714 views

how can I run my script automatically on ac switching

So, I wan't to run it when start work on AC and this or better other script when start work from battery I tried /etc/acpi/power.sh adding symlink to /etc/laptop-mode/battery-start It seems to ...
6
votes
1answer
752 views

How can I increase time of working from my battery?

Usually I am not even able to watch film from start to end. I use Acer Aspire 5930 OS is Ubuntu 11.04 I use Classic Ubuntu desktop (AFAIK it really means GNOME2) I know, that: I can decrease ...
4
votes
3answers
728 views

will using xubuntu decrease my power usage?

I am battling with the absurd power usage of ubuntu 11.04. On windows 7 (which came preinstalled) I can get around 4:30 hours turning everything off (wifi, bluetooth, lowest brightness for screen) ...
1
vote
1answer
289 views

How do I determine the power state of my monitor?

How do I determine the state of my Monitor in Ubuntu 11.04. I've seen a lot of stuff regarding dpms, but for what ever reason, I don't have the dpms module running on my ubuntu install and I'd really ...
4
votes
1answer
2k views

How do I enable power management on Ubuntu Server?

I have Ubuntu Server 11.04 installed on an old noisy laptop. Its only purpose is to run subversion and I commit code quite rarely, but the laptop should work all the time. So I would like to know how ...