Questions related to power management, particularly power saving measures.
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 ...
3
votes
1answer
93 views
Creating scripts
I'm following advice from LessWatts to lower battery drain with the following commands:
mount -o remount,noatime /
hdparm -B 1 -S 12 /dev/sda
echo 3000 > /proc/sys/vm/dirty_writeback_centisecs
...
3
votes
2answers
376 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 ...
3
votes
1answer
2k views
Power saving with free Radeon (ATI) driver
I'm using Ubuntu 11.10 without the proprietary driver for ATI video cards and I like very much the performance.
My only need is activate power saving when I use the laptop with the battery.
Thanks
3
votes
2answers
702 views
How is the Magic Trackpad's Battery Life (with Ubuntu)
What are other peoples experiences are with the battery life of the Apple Magic Trackpad using Ubuntu?
I think I've emptied included batteries after about two weeks usage for five days a week, eight ...
3
votes
4answers
826 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
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 ...
3
votes
2answers
2k 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 ...
3
votes
1answer
203 views
How would you unsuspend a computer using a bash script?
How I can unsuspend my computer with a bash script like:
#!/bin/bash
pm-suspend
sleep 10m
{unsuspend command}
3
votes
2answers
294 views
use setpci to restart ubuntu server after power failure on macbook
I installed ubuntu server 11.10 on my macbook 1,1.
In order to reboot after power failure I have to set a specific "AFTERG3" bit using setpci.
The solution for a macMini can be found here:
...
3
votes
1answer
601 views
Is there a power saving way to download torrents?
I usually download my torrents at night, while I'm sleeping. But when doing so, Ubuntu loads the entire desktop interface, while I only need the torrent client. I would like to use an energy saving ...
3
votes
3answers
8k 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 ...
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 ...
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
2answers
418 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 ...
3
votes
4answers
5k views
Power Management - Sleep / Wake up Server when accessed
I have a headless HP Proliant Microserver with ubuntu installed. This machine has samba shares on it serving media and I usually rdp or ssh into it. Now my issue is I want the machine to go into sleep ...
3
votes
2answers
430 views
How do I check how much power my laptop is drawing?
How can I check how much power my laptop is pulling at any given time?
3
votes
2answers
1k views
Booting ubuntu desktop into command prompt
I use ubuntu desktop 10.10 on a netbook. Quite often I use it as a proxy server (squid3) and file server (samba) for my network. So when I am using it as a network server, is it possible to boot into ...
3
votes
1answer
951 views
How to prevent XBMC from shutting down or suspending your computer?
Since I run XBMC as a program, and not standalone, I would just like it to exit when I click the power button. The default behavior is to show the shutdown menu, and I don't want to accidently shut ...
3
votes
2answers
496 views
How can I improve the power consumption of the open source AMD graphics drivers?
How i can optimize the power consumption of the open source radeon driver?
I don't want to use official amd driver cause of an error with sleep mode.
AMD E-450 cpu\gpu.
3
votes
1answer
861 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 ...
3
votes
1answer
812 views
Unmounted disk still spins up regularly
I just added a disk, with partitions but none of them are mounted. The disk will still spin up every now and then. it goes like this:
### disk spins up
hdparm -Y /dev/sdb;date
/dev/sdb:
issuing ...
3
votes
1answer
1k views
How to turn off screen (DPMS) together with locking session in KDE?
First of all, I'm aware a similar question for GNOME is asked here: "Switch off laptop backlight when locking screen".
Objective
I would like to turn off my screen on locking the session for power ...
3
votes
2answers
187 views
Which one consume less battery in Ubuntu (generally Linux) Ethernet cable or Wireless?
I am wondering when i want to connect to network, it is better use my wireless adapter or using cable (ethernet adapter), Which one consume less battery?
Sometimes i saw that my battery life was more ...
3
votes
1answer
187 views
How do I detect when my system wakes up from suspend via DBus or similar in a python app?
In a background Python script I need to detect, when the system just woke up from suspend. What is a good way that does not rely on a root script but rather on python modules such as DBus?
I'm new to ...
3
votes
1answer
916 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 ...
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 ...
3
votes
1answer
1k views
Lenovo ThinkPad L520 slows down when AC power adapter is plugged in
I have a new laptop Lenovo ThinkPad L520 (7859-5BG) Core i5-2520M(2.5GHz) with 4GB RAM.
Having installed Ubuntu 11.10 32-bit, while browsing with Chrome on GNOME classic (no effects), I noticed 173% ...
3
votes
1answer
768 views
Why does powertop think I have two displays?
Ok, so in powertop (version 1.97), in both the "overview" and "device stats" sections, I see two devices, each called "display backlight". One shows the correct percentage of use, e.g. if I lower ...
3
votes
1answer
233 views
How do I repair the shut-down/Log-off button?
I use the computer with 2 users.
With one user all works fine.
With the second user account, the shut down and log-off buttons do not work anymore while screen locking standby and hibernation still ...
3
votes
1answer
217 views
Webcam light turns on, when I use media applications like Banshee and Rhythmbox [closed]
I have an Asus laptop. It is the X53 Model. I use Ubuntu 11.04 on it and I have no problems but when I try to open a multimedia program the LED of my webcam turns on. What can I do to about it?
3
votes
1answer
2k views
Modify manually PWM of my fan (fan speed)
I configured fanspeed but it detects only one "temp" captor...
In Gnome Sensors applet, I can see the temperature of three captors...
The one of my GPU is 75°,
62° for my hard disk
and 32° for my ...
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 ...
3
votes
1answer
35 views
Can my settings be customized automatically when I boot on battery power?
Is it possible to tweak settings if and only if the computer starts on battery power?
Why?
I usually work without battery, but when I use a battery I want it to last as long as possible. For that ...
3
votes
1answer
26 views
powertop color codes
I am running powertop in Ubuntu 10.04. It shows a horizontal bar near the top that displays something like:
Wakeups-from-idle per second : 723.6 interval: 10.0s
My question is, why is the ...
3
votes
1answer
532 views
How do make my screen brightness not change when i charge my laptop
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 ...
3
votes
1answer
420 views
How do I make brightness settings persist across rebooting?
I'm using 12.04 with up to date packages running on a Dell Inspiron N4030 laptop with an ATI Radeon HD 5400 graphics card. I'm using the new Catalyst 12.6 graphics driver (this version already fixed ...
3
votes
2answers
3k views
VLC does not inhibit screen blanking
I have an issue which could be a bug, but before reporting it, I want to make sure I'm not doing something wrong.
When watching a movie with VLC on fullscreen, approximately in 10 minutes the screen ...
3
votes
2answers
961 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 ...
3
votes
1answer
380 views
Is there a way to run the laptop only on AC power without removing the battery?
Is there a way possible to run a laptop only on AC power without having the need to remove the battery i.e. to disable the charging as it is possible in Windows 7.
3
votes
1answer
218 views
Acer TravelMate 220 doesn't resume
My computer (Acer TravelMate 220) likes sleeping so much that I can't wake it up. I'm using Ubuntu 11.10 (installed Nov 2011). Based on similar questions posted, it seems to have been an issue in ...
3
votes
2answers
4k views
Fan runs constantly on an Acer Aspire s3
I have a new Acer Aspire S3 notebook and problems with the fan. After installing Ubuntu 11.10 (but also with the Xubuntu live-disc) the fan is running constantly. Is there any possibility to:
Stop ...
3
votes
1answer
2k views
Dell Laptop won't shutdown / restart by itself
I recently upgraded to ubuntu 11.10 64-bit on my Dell Studio 1569. Before this I ran ubuntu 11.04 64-bit.
Every time I shutdown, or restart it goes through the usual processes, and shows no error
( ...
3
votes
3answers
205 views
Maximal power-saving on a laptop when sleep/hibernate is not possible?
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 ...
3
votes
2answers
781 views
Fans go in overdrive on my Inspiron 9400! What should I do?
After an update to 11.04 the fans of my Inspiron 9400 go in overdrive and never lower speed. Is this normal? It did not happen on any of the other Ubuntu releases.
3
votes
1answer
1k views
Low-battery-power action without gnome-power-manager
I'm running the openbox WM and would like to avoid loading the gnome stack. One of the lingering issues I have to resolve is avoiding abrupt system crashes due to depleted battery power.
Is there a ...
3
votes
2answers
415 views
How exactly does gnome manage laptop suspend events?
The reason I ask is that, while suspend under lid closure and fn-F4 work perfectly in the Ubuntu (gnome) desktop, I cannot get them to work when using a different window manager (fvwm) on my thinkpad ...
3
votes
2answers
53 views
How do I find out if an external drive is in active use (being read/written to)?
I have some external drives connected to a power outlet. The outlet is USB switchable, i.e. I can run a program on my PC that physically disconnects the external drives from the power grid. I only use ...
3
votes
1answer
73 views
Is the pm-suspend command equivalent to the GUI suspend option?
I noticed the pm-suspend command and was wondering whether this is the same as selecting the sleep option on the main menu.
If not, how does it differ?
3
votes
0answers
94 views
How do you prevent CPUs from being throttled when battery is taken out of Laptop (aka only on AC power)?
My laptop CPUs are throttled down to .8GHz instead of 2.5GHz whenever I am connected to AC only and not the battery. I tried using cpufreq-set and it allows me to set the speed when the battery is ...
