Questions related to power management, particularly power saving measures.
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 ...
3
votes
0answers
246 views
How do I prevent immediate wake up from suspend (version II)?
This question covers one reason a computer might immediately wake after suspend:
How do I prevent immediate wake up from suspend?
I seem to have a different one. After a recent security patch update ...
3
votes
0answers
261 views
Power cable status not recognized on a Samsung NP530U3B-A01 laptop
I have a Samsung NP530U3B-A01 with Ubuntu 12.04 running Gnome-Shell. Basically it runs pretty well apart from the problem that plugging or unplugging the power-cable is not recognized by the system.
...
3
votes
0answers
233 views
xfce4-power-manager keeps restarting after suspend
In a clean install of Xubuntu 12.04, the xfce4-power-manager keeps restarting after suspend. If i quit the program and restart it, it keeps restarting. If i quit the program and restartit a few ...
2
votes
0answers
13 views
My fan is always on but not in MSWindows (HP elitebook 8460p)
Problem: My laptop(new) fan is ALWAYS on.
Question: What can I do to solve this issue?
Situation:
HP Elitebook 8460p
Ubuntu 12.04 LTS (clean install, no mod, nothing... really clean... no ...
2
votes
0answers
152 views
Disable HDMI sound out, for decrease power consumption
I have Ubuntu 12.04 on my laptop
I'm looking for a way to decrease power consumption.
This is output of powertop command
Power est. Usage Events/s Category Description
1.30 W ...
2
votes
0answers
115 views
“power off and on” specifc usb port in Ubuntu 12.04
I am trying to power off and power on usb port in Ubuntu 12.04 without success.
I tried the steps listed below:
echo "0" > "/sys/bus/usb/devices/$port/power/autosuspend"
echo "auto" > ...
2
votes
0answers
51 views
How to tell if laptop was woken by rtc?
Say I set my laptop to wake every morning with rtcwake (e.g. echo $(date +%s 'tomorrow 08:00') > /sys/class/rtc/rtc0/wakealarm in a cron job or in /etc/pm/sleep.d/99-set-alarm.sh).
Now, I'd like ...
2
votes
0answers
309 views
12.10 shutdown/power-up issue
I have just upgraded to 12.10 on a Shuttle XPC which I use mainly for XBMC and have a problem with shut down/power up. When I shut down from within XBMC the box seems to shut down correctly, but it ...
2
votes
0answers
346 views
Suspend on power button when session is locked
It is possible to configure Ubuntu so that pressing the power button causes an immediate suspend (see here, for example). That configuration does not work, however, if the session is locked.
Is it ...
2
votes
0answers
1k views
How to keep battery charge at 80% to increase its lifespan
Lithium-based Batteries are not supposed to constantly sit a maximum charge. This damages them and reduces their lifespan. This is why some people take the battery out when using the laptop plugged ...
2
votes
0answers
105 views
Getting the external hard-drive faster into standby
Currently, my external hard-drive is going into standby after 15 minutes of inactivity. How can I reduce this period to e.g. 5 minutes?
Using Ubuntu 12.04 64-bit with Gnome Shell.
Thanks in advance!
...
1
vote
0answers
82 views
fan noise and high battery consumption with AMD hybrid graphics
as described here dell 7520 (inspiron 15R SE), fan on full speed on 12.04, 12.10, 13.04, i still have problems with my energy comsumption and fan noise under ubuntu 13.04.
i could reduce it to a ...
1
vote
0answers
30 views
How to Cycle Power to a PCI Device with setpci
If I have my vendor and device ID of a PCIe card, how can I cycle power to that card using setpci?
eg:
setpci -d 118d:3000 _________
I'm comfortable with Ubuntu, but I'm no expert by far so please ...
1
vote
0answers
48 views
Message: “Battery dies in few seconds” -Bad battery-status or problem with power management?
I'm still a beginner, but I have used Ubuntu and other distros before. I run a German setup so I'm not shure about the correct words.
So here's the problem: My netbook (ASUS X201E) with fresh Ubuntu ...
1
vote
0answers
54 views
How to get around graphical issue when “waking” computer from suspend?
I've checked a few of the similar questions. But they have provided no viable answer. I would rather not install Nvidia drivers. Because I've had nothing but trouble with them.
But to the problem. ...
1
vote
0answers
27 views
after disabling dpms, how to keep dpms disabled after resume from suspend?
Ubuntu 12.10 quantal: On login, I run "xset -dpms s 0 0 s off". This works great until I suspend and resume. For some reason, dpms is re-enabled after resume. Is there an easy way to completely ...
1
vote
0answers
207 views
System crash after update - cannot load lightdm
I've been running 12.10 for ~(two weeks) now and have had my fair share of trouble with it. Of course, this has thought me a great deal of lessons of using ubuntu, the command line and Linux in ...
1
vote
0answers
100 views
selectively deactivate (power off) pcie slot?
the title basicly says what I'd like to do:
my machine has integrated HD4000 graphics and a more powerful PCIe card
HD4000 is enough for everyday use, PCIe should be used only for gaming with ...
1
vote
0answers
50 views
Nautilus Error 22688 and power management
I have seen questions covering the various types of dismissable warnings such as this #255 error:
mfg@paprika:~/Websites$ gksudo nautilus
Nautilus-Share-Message: Called "net usershare info" but it ...
1
vote
0answers
39 views
Laptop refuses to power down or restart from top bar power icon
I am running Ubuntu 12.04 (32-bit) on a Dell Vostro 1700 laptop. When I click 'shut down' option on top bar far right button, it closes Ubuntu but won't shut down. It just goes to a low-power state, ...
1
vote
0answers
57 views
Black screen when trying to play video games
I run a wined version of steam (mostly because most of my steam games aren't avaible on the steam beta yet) and I had problems in the past with this black screen/dim screen but I fixed it, the problem ...
1
vote
0answers
195 views
Lenovo u310 will not charge when turned on
I've looked around and had several friends have a look but we cannot figure this out.
I am running Ubuntu 12.10 on a Lenovo U310. The laptop charges fine when the laptop is off but it will not charge ...
1
vote
0answers
115 views
Auto Brightness depending on power source
Is there any way to make Ubuntu remember different brightness settings when I'm plugged in and when I' plugged out like windows? I dim the brightness to the minimum when I'm running my laptop on ...
1
vote
0answers
205 views
Good spindown for HDD on Media/NAS server
I am running a small media server that also doubles as a NAS drive in my house. I use it to host my Plex library along with my Subsonic library for Roku and my Droid's. It's a real simple ATOM server ...
1
vote
0answers
171 views
For some reason upsmon doesn't do shutdown
I use nut to monitor my ippon 800 UPS.
Everything seems works, except shutdown.
I can get UPS params with upsc command:
~ > upsc ippon-800
battery.charge: 0
battery.voltage: 12.50
...
1
vote
0answers
104 views
Xubuntu fails to stay awake when the machine is under load
I have the following problem with a fresh install of Xubuntu 12.04:
I set up power management options so as to send the machine to sleep after it's been idle for a while. My intention was to have it ...
1
vote
0answers
267 views
screen does not wake up after suspend/ brightness will not adjust
My computer is one of these:
http://www.newegg.com/Product/Product.aspx?Item=N82E16834230467
Asus Zenbook UX32A-DB51
Just bought it yesterday.
Set to "suspend" when I close the lid, but when I open it ...
1
vote
0answers
158 views
Home Server Power Consumption Reduction
I am running Ubuntu Server 12.04 on an HP Mini 311. It has an Atom 270, 3GB ram, NVIDIA ION graphics. When running windows 7 with the screen off and no programs running the power consumtion from the ...
1
vote
0answers
57 views
Is text-only mode a saving or a problem for battery savings?
A friend is flying to the US from Europe and asked me a very thought-provoking question, which I am not remotely able to answer with substance so I am asking it here:
How to absolutely maximise ...
1
vote
0answers
31 views
Temporary disable suspend when x command is running?
How do you temporarily disable suspend functionality when a certain command is running? This request is similar to caffeine but caffeine does not offer this functionality.
1
vote
0answers
160 views
Oops! it's a desktop not a laptop
My mother has a Desktop PC, I accidentally installed Ubuntu 11.0 Laptop on it, now the power settings are set up for a laptop.
Is there any way I can change this?
1
vote
0answers
584 views
Lowering GPU temperature on Radeon 6850 with open source driver
I read and tried this and it doesn't work for me!
when I type
echo "mid" > /sys/class/drm/card0/device/power_profile
I see what this value really changed (needs the chmod was applied before, ...
1
vote
0answers
122 views
Is There A Way To Measure Total Battery Discharge Time?
Can this be done with multiple sessions even if over a matter of days? This function does not appear to be available in XFCE Power Manager. If you have not already guessed, this question regards ...
1
vote
0answers
307 views
Acer 722 internal mic keeps turning off
Hi we have 200 AcerAspireOne 722 for student use running Ubuntu 12.04
I can get the internal mic to work but when on battery power I can't get the mic to be ready on start up. The user has to toggle ...
1
vote
0answers
96 views
Is there a reason why NetworkManager doesn't execute rfkill?
There has been a lot of agitation in the past with bugs regarding NetworkManager not setting the rfkill state to unblock so people were stuck with disabled Wifi devices. Reportedly, this has been ...
1
vote
0answers
185 views
Ubuntu 12.04 LTS Reboots After Idle Period
I am running Ubuntu 12.04 LTS and it reboots only after it has been in idle mode. No other times do I experience any issues with stability. I see no spikes in temperature, no log messages indicating a ...
1
vote
0answers
303 views
Battery indicator shows the wrong battery
I recently bought a secondary battery for my Dell Latitude D620 that fits into the CD drive. There are a couple problems:
First, it drains the secondary battery first. I'm OK with that, but when it ...
1
vote
0answers
821 views
What is the reason for high power consumption on my Thinkpad T420s
I haven't seen this exact question posted or any related answers, so I'm re-posting.
Here is the problem: After upgrading to Ubuntu 12.04 Precise Pangolin, my t420s laptop idles above 20 watts ...
0
votes
0answers
6 views
glitchy screen on laptop close
when ever I close the lid on my laptop, no matter if its in suspend or do nothing mode, it starts to glitch. when it glitches it goes black and comes back on when the mouse is moved around, but it ...
0
votes
0answers
15 views
wrong battery report on asus k45dr
I bought new asus laptop with series k45dr and there is something wrong the battery, it always show that it fully charged , even though i have used my computer for more than an hour then without ...
0
votes
0answers
10 views
Change brightness automatically depending on power source in 12.04
I'm running Ubuntu 12.04 on a HP G61. When I used to use Windows in this machine, my screen to autodimmed when unplugging AC (i.e. running on battery), and brightness was restored when plugged again. ...
0
votes
0answers
11 views
disable display power saving on primary screen
Hi I would like to disable my linux server power save function. I was running a console program constantly generating screen print out. and after a while the power saving ticks in to turning off my ...
0
votes
0answers
14 views
Log the power usage from electric grid?
is there a way to log the power my computer uses from the electric grid (i.e. power plug)?
When on battery, I can obviously use powerstat.
Any how can log this to a file?
Here's an example:
...
0
votes
0answers
49 views
Laptop running Ubuntu battery management issues
I am a newbie to Ubuntu (after dumping 3 other distros) and have seen a terrible battery management from Ubuntu.
I use a HP DV7 17" 8 gb ram beast with about 30 minutes of battery power since I ...
0
votes
0answers
71 views
How do I turn down GPU heat / usage on a Sony Vaio Z21?
I have a Sony Vaio Z21 (VPC2) and am experiencing some GPU heat/usage issues since kernel 3.2 up till 3.9.
I have installed laptop-mode-tools, configured powertop and added the following to grub:
...
0
votes
0answers
25 views
Ubuntu crashes when on battery power
I've got an HP 2510p (with a mic problem..) with Ubuntu 13.04. When I use it plugged in to the A.C. supply, so far so good. When I disconnect the A.C. supply, Ubuntu crashes. Same thing happens when I ...
0
votes
0answers
40 views
Ubuntu not is hibernating when lid is closed
I use Ubuntu 12.04 in my laptop. I'm trying to configure to hibernate when lid is closed. However, not is working.
I did the following steps to solve the problem:
I enable in ...
0
votes
0answers
24 views
Monitor ramdomly powers off
I'm having a problem with notebook screen on Ubuntu 13.04(for what i remember it happened on 12.10 too), sometimes( i think at least, mostly when playing games) the monitor just powers off, but the ...
0
votes
0answers
206 views
My ubuntu 13.04 x64 cann't do cold boot in battery?
I am using HP-Pavilion G6-2005ax, powered by AMD APU A8-4500M, 4GB RAM, 500 GB HDD and AMD Radeon HD7670M 1GB. I am using Ubuntu 13.04-amd64 version. While I am doing cold boot on battery, the Lap ...
