Questions related to power management, particularly power saving measures.
21
votes
3answers
4k views
Jupiter or similar power saving app for 13.04?
I have installed the 13.04 final release and so far I am loving it more 12.10. I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there ...
54
votes
6answers
28k views
How can I tell Ubuntu to do nothing when I close my laptop lid?
I would like closing the laptop lid to be a no-op. How can I do that?
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 ...
24
votes
4answers
10k views
Why does my computer get less battery life with Ubuntu compared to Windows?
Last year I purchased a Dell Inspiron 5315 laptop shipping with Windows 7 preinstalled. I installed Ubuntu 10.10 alongside it with dual-booting. On upgrading to Ubuntu 11.10, I was upset to find I now ...
11
votes
3answers
5k views
Will final version of 12.04 use the power management changes found in kernel 3.3
I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a ...
10
votes
0answers
4k views
Battery drain on ubuntu is fast [duplicate]
My battery drain on win7 is less than that of ubuntu (around 45 min of difference).
Can you advice me something to get best battery performance on my laptop?
when I decrease the brightness it remains ...
17
votes
0answers
10k views
Battery life decreased after upgrade to 11.04 [duplicate]
Possible Duplicate:
Why does my computer get less battery life with Ubuntu compared to Windows?
After upgrading from Ubuntu 10.10, my battery life has decreased dramatically.
There was a ...
23
votes
1answer
9k views
Is “laptop-mode-tools” still relevant for 12.04 and the 3.x kernels?
I'm using Ubuntu 12.04 x64 and trying to choose power management software. Laptop-mode-tools have a lot of features, but the only reason why I'm worry about is that it's manual and config files are ...
13
votes
7answers
10k views
Laptop minimal power consumption tweaks
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 ...
2
votes
5answers
5k views
Does Jupiter really improve battery power?
I installed Jupiter on Ubuntu 11.10 and set the preference mode to "Power Saver" but haven't seen any noticeable difference. Does it really do what it claims?
13
votes
2answers
2k views
How to turn off the display via the command line?
Is there a way to turn off the display (enter power saving mode) using a command?
For example, when the computer is inactive for a specific interval, the screen turns off to conserve energy. Is there ...
3
votes
4answers
5k views
How can I prevent iwconfig power management from being turned on?
I am affected by this bug: 869502.
A workaround which seems to stop the kernel panics for me is to disable wlan0 power management:
sudo iwconfig wlan0 power off
However it seems to automatically ...
11
votes
5answers
13k 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 ...
10
votes
3answers
11k views
How can I control HDD spin down time?
I have 2 HDDs in my PC. Ubuntu is turning off the secondary HDD very quickly after about 15 minutes, which is short for me. I need to control this time. How can I do it?
I tried GNOME power ...
3
votes
3answers
4k 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 ...
8
votes
3answers
2k views
Checking laptop's battery state in a terminal [duplicate]
Possible Duplicate:
How to check battery status using terminal?
I want to find out whether my laptop is plugged in to AC power or not using the command line. How can I do this?
6
votes
2answers
1k 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 ...
6
votes
1answer
915 views
Linux kernel regression on power usage
Webupd8 reported this power management fix for the 2.6.38 Linux kernel regression:
Add the following to the boot grub line "pcie_aspm=force"
My question - how does this suggested fix differ from ...
8
votes
2answers
9k views
Ubuntu 12.10 “Turn screen off when inactive for: Never” still turns off
After a fresh install of Ubuntu 12.10, my screen still goes off after about ten minutes. I've been to the Brightness and Lock control panel. The Turn screen off when inactive for: setting is set for ...
5
votes
5answers
6k views
Scheduling StartUp and ShutDown
I use Torrents often, so I need to know how to make my computer start up and shut down automatically, Wi-Fi is switched on at six in the morning in my hotel and switched off at two AM. (I am able to ...
3
votes
2answers
1k views
What prevents setting ATI / radeon power_profile from boot and retaining it after suspend?
I'm successfully using the open source radeon driver and use KMS-power_profiles (see link below) for power management of my graphics to prevent overheating. But I can't manage to set the power_profile ...
1
vote
2answers
1k views
Unity won't suspend on inactivity
Running 12.04. I can manually suspend the system and wake it up again, but I can't get it to suspend on inactivity automatically.
I have it set to "Suspend when inactive for" 10 minutes in ...
4
votes
1answer
1k views
UPS Compatibility with Ubuntu Server
I'm looking into getting battery backup unit to protect my Ubuntu server. How can I find out if it is compatible with Ubuntu (11.04)?
Ideally I'd like to be able to tell the server when there is a ...
3
votes
3answers
2k views
“On battery” is not recognized
I have just bought a lovely ThinkPad Edge 11 which have ~6 hours of surfing in Windows 7. But unfortunately, a clean Ubuntu 10.10 give me max 4 hours which is not satisfactorily. Therefore I have ...
2
votes
4answers
2k views
How can I keep a wireless card's radio powered off by default?
My desktop's PCI wireless card is always scanning for available wireless networks, but I only rarely use it. Can I keep the radio turned off until I need it?
14
votes
1answer
1k views
Is there ongoing work in the kernel team to improve battery life under linux?
I have read in some forums that the kernel team is working on improving battery life and energy efficiency in linux. Unfortunately our community really lags behind windows and mac in that regard. I ...
18
votes
2answers
5k views
How to prevent my screen from dimming when watching YouTube?
My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim.
This works correctly when I watch videos ...
5
votes
5answers
5k 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 ...
8
votes
2answers
5k views
How to charge the battery till 60-80% only?
I just got my laptop's battery replaced and read a bit about how to prolong it's life. Most people say that the best choice is not to charge it will 100%, but rather to 60-80%. My battery is quite ...
4
votes
1answer
681 views
Freeze when resuming from screensaver or monitor-sleep-state [closed]
I've installed Natty on an older Samsung desktop at work. It's a shared machine that needs no screen-locking, passwords, or anything else. (Perhaps it should have those features, but nobody would use ...
8
votes
3answers
2k views
Kernel patch that solves battery issues when for ubuntu ? [closed]
http://www.phoronix.com/scan.php?page=news_item&px=MTAxNDM
When will this come for ubuntu ?
I am getting tired with my 11.10 dieing at little over 50 minutes of battery when at the most extreme ...
5
votes
4answers
2k views
Prevent screen turning off when watching video in XBMC
In 12.04, the screen never went to sleep while watching videos in XBMC. However after upgrading to 12.10 and changing no settings, it does.
Is there any way I can prevent the screen automatically ...
3
votes
6answers
2k views
Battery management doesn't recognize removal of power supply
I have a Lenovo Y460p running Ubuntu 12.04 (64-bit). The battery does charge normally, but unplugging the power supply only very briefly shows the correct battery indicator. After about 1 second, it ...
2
votes
3answers
3k 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 ...
5
votes
6answers
340 views
How can I disable backlight when I lock the screen?
When I lock screen, the display does turn black but the display isn't completely off. There is some light coming out of the display in screen lock mode but it get turned off when inactive for 10 ...
4
votes
1answer
730 views
Modify actions when battery is critically low?
I am running Ubuntu (not Xubuntu) and am using Xfce4 on my laptop. When my laptop battery is critically low, Ubuntu/Xfce4 performs some action (perhaps hibernate?) which causes my laptop to shut down.
...
2
votes
1answer
535 views
Battery is drained too quickly
I'm getting really low battery life under ubuntu, not even close to windows. I tried powertop, and I saw that my laptop is consuming in idle nearly 20 watts (a bit more).
I tried to install ...
0
votes
2answers
1k views
What power settings can I use for Asus U32U-ES21 to achieve something close to the stated 10 hours battery life?
So when I got my Asus X32U Notebook, the first thing I did was delete windows and install 64bit Ubuntu 12.04 - which works great, however I only get around 2.5 hours on battery - nothing close to the ...
6
votes
2answers
406 views
How do I set the computer to suspend when battery is critically low?
I accidentally clicked on the option "When power is critically low" under System Settings>Power. The original entry was blank, but the only two options after I clicked were Hibernate and Shutdown. I ...
5
votes
1answer
2k views
Intel HD audio codec power management
Is it possible to enable power management for intel-hda sound card audio codec ? Power management for the card itself works fine, but audio codec module (/sys/module/snd_hda_codec) doesn't seem to ...
4
votes
2answers
3k 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 ...
3
votes
3answers
803 views
Brightness control doesn't seem to work on a Toshiba Satellite M115 laptop
I have Ubuntu 12.04 LTS on a Toshiba Satellite M115 laptop. The brightness control doesn't seem to work with the "brightness and lock" setting or fn+f6 and fn+f7 (which usually works in Windows). How ...
3
votes
2answers
8k 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
3answers
4k views
How to disable auto power off of usb devices like usb mouse?
I don't know how , but somehow automatic power-off of usb devices got accidently enabled. Now my usb mouse goes off even if it's idle for 2-3 seconds. it's really irritating.
help?!!!!!
P.S. This ...
1
vote
0answers
232 views
How to enable Hibernate in 12.04? [duplicate]
Possible Duplicate:
How to modify policykit to allow hibernation in upower?
I just installed the new 12.04 beta on my Lenovo Ideapad U450. According to this thread Whither hybrid suspend? ...
0
votes
0answers
209 views
No option for power management on a Compaq 510 series laptop [closed]
I'm using compaq 510 series laptop, I have installed Ubuntu 11.04 32-bit OS desktop edition.
In system preferences there is no option of power management. No battery icon visible on the menu bar near ...
16
votes
4answers
4k views
How to go automatically from Suspend into Hibernate?
Is it possible to make Ubuntu go into Hibernate state from Suspend, aka "Suspend Sedation"?
For example, my laptop is set up to go into a Suspend once I close the lid. If then I don't use it for ...
9
votes
2answers
471 views
Why does powertop still detect tunable settings on >12.04?
According to this Q&A laptop-mode-tools and powertop are not needed anymore with ubuntu 12.04 as the power savings are now included in the kernel.
So I decided to remove laptop-mode-tools from ...
8
votes
4answers
2k views
Netbook performs hard shutdown without warning on low battery power
My Asus EEE netbook performs a hard shutdown when it reaches low battery power, without giving any warning - i.e. the power just goes off, without any shutdown process. I can't find anything in the ...
8
votes
5answers
7k views
How to save brightness settings?
After I upgraded my notebook to ubuntu 12.04, I found that I can not save my power settings. Every time I set the screen brightness to 70%, it restored to 100% next time. I can't find a save button on ...
