Questions related to power management, particularly power saving measures.

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0
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1answer
98 views

Fan is constantly on when plugged, but goes silent when only on battery

Problem Fan is constantly on when a laptop is plugged and not charging. Not noisy, but definitely audible. However, it occasionally stays silent (spinning slower or not spinning at all) when laptop ...
1
vote
0answers
44 views

Ubuntu 12.04, asus f550c : it do not go in power save mode

If I remove the charger from my laptop asus f550c, it do not go in power save mode, as I can see from the applet CPU frequency scaling indicator Indeed, usually if I suspend the laptop, it has very ...
0
votes
1answer
33 views

Scheduled Power On/Off of 2nd HDD

im using a ubuntu 13.10 Server. I want to switch off the 2nd HDD completely and only power it up once a week to back up the system+data from the 1st HDD. I know how to use crontab, but I dont know how ...
1
vote
1answer
93 views

Ubuntu Battery not charging or not detected

Here is question/answer just to help the community. I just bought a new ASUS N750J . I had some issues installing kubuntu. Problems were the CPU FAN always running at full speed, battery not ...
0
votes
1answer
24 views

PC System Status Bios visible through shell?

I am looking to view some settings that are visible through the bios in the command line. Our system has a built in holdup charge (shows SUSV status in bios) that I would like to poll regularly for a ...
2
votes
2answers
225 views

Cannot increase wifi card power using iwconfig

So I set up a hotspot using hostapd, isc-dhcp-server and MASQUERADING. The hotspot works and I can access Internet. Problem The connection speed is too slow. When I connect to my hotspot (via ...
0
votes
1answer
35 views

How do I guard ubuntu for power outage?

I develop industrial equipment with embedded PC and Ubuntu 12.04.3. Web server(apache) and DB(sqlite) running automatically when I turn on this PC. User can't shutdown in the correct sequence. ...
0
votes
2answers
155 views

My laptop SUDDENLY doesn't turn off screen, when closing lid

I installed Ubuntu 13.10 on my Vaio Pro 13 back in october, 2013. Ever since everything has worked flawlessly. Now yesterday when I closed the lid(as normal), I noticed that my screen and computer ...
0
votes
0answers
68 views

How to change/customize boot settings in grub, so that ubuntu fully recognizes the hardware it runs on?

I've got a problem with Ubuntu 13.10 on my laptop Acer Aspire 5750ZG. It cannot recognize that it is running on laptop - there is no battery indicator, power consumption is very high. Simply ...
1
vote
1answer
73 views

Suspend on lid close, even with the option OFF

I've set up a friends laptop with Ubuntu 12.04LTS with the Cinnamon desktop, and I'm having a few issues with the power settings. As far as I can tell I've got every setting to "Do Nothing" when the ...
0
votes
0answers
41 views

usb drive spin down

I have 2 usb hdd drives connected to my notebook with ubuntu 14.04, each of them spin down after ~10minutes. I need to make them always in active mode (no spin down). I tried sdparm and hd-idle, but ...
2
votes
2answers
29 views

Stop process on power button press

I have an old ubuntu pc running a minecraft server, but I only want it on at certain times. I want to be able to turn it on and off using only the power button. I am able to turn it on, but to turn ...
-1
votes
1answer
106 views

Battery drain after dual booting windows 8 and Ubuntu 13.10 and Sleep problem in windows

New to the forum here, had hoped for a better beginning to the open source world then this. I had never installed Ubuntu before until a week back, followed all the precautions so that I didn't fall ...
2
votes
2answers
73 views

Crash after modifying rc.local file to solve overheating issue

I made a dual boot on my laptop with Windows 8. After installing Ubuntu, I notices that my laptop was really hot, and realized that both GPUs are working, my integrated Intel GPU and secondary NVidia. ...
1
vote
0answers
47 views

Screensaver not activating in 13.10

I'm running Ubuntu 13.10 64bit and the Unity desktop environment. I have my screen lock settings configured so it will blank the screen after 5 min. and lock it imediatly. The problem is it doesn't! ...
1
vote
1answer
106 views

Desktop hard drive won't spin down according to settings

I have a desktop machine with two SSDs, one each with Windows 8.1 and Ubuntu 13.10, and one HDD which contains a single NTFS partition on which I throw big files. It actually only rarely gets used and ...
1
vote
0answers
30 views

How can one increase the timeout before the display dims when on the battery?

If I do not touch my computer (a Toshiba Satellite) for 15 seconds when running off the battery, the screen dims to the lowest brightness. I have already disabled "Dim screen to save power." I do not ...
2
votes
1answer
40 views

WOL - Ubuntu 12.04 LTS Power computer off, computer turns back on

I have an GA-B75M-D3H Gigabyte motherboard with an i3 processor that I'm using WOL from a windows machine to start the computer. The WOL is working fine but the issue is when I power the computer off, ...
0
votes
1answer
28 views

low on battery mode

On my lenovo laptop with Windows installed, when my battery was almost empty, it went in sleep (or some sort of sleep mode). so that if i gave it power again, it restarted back to windows with all my ...
0
votes
1answer
48 views

powertop html file not providing echo commands

I have been trying to improve the power consumption of my Lenovo Z580 running Ubuntu 12.04. Powertop looks like one promising lead and I have been following the instructions provided here: How do I ...
2
votes
3answers
305 views

battery discharges in a strange way on Lenovo Ideapad Z500

I've a Lenovo ideapad Z500 laptop with Windows only energy management software (my battery stop charging at 60% for long lasting life). Setting the threshold from Windows, it remains also with Ubuntu ...
0
votes
0answers
40 views

After pm-suspend /WOL the (usb) file system is read only

Ubuntu Server 12.04 for low-power home server (NAS mainly). System boots from USB pen-drive (to keep all IDE/SATA ports available for RAID, etc.). System will suspend when idle for time. pm-suspend ...
0
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0answers
44 views

Ubuntu 12.04 LTS - Will not boot on laptop using just A/C power

I have installed Ubuntu 12.04 LTS on my Acer Aspire 5741 alongside Windows 7 (Dual boot). The battery is on it's last legs and doesn't charge properly most of the time as it is relatively old. When ...
0
votes
0answers
87 views

Ubuntu 12.04 Samsung HD204UI Spin-Up-Time Fail after Suspend

Samsung's HD204UI 2 Tbyte EcoDrives are known for their slow Spin-Up-Time, so I didn't really wonder about a recent SMART failure, after suspend, in the Spin-Up-Time category. Now there is a ...
0
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0answers
22 views

Does HPCoolsense work in Ubuntu?

Before I changed to Ubuntu, I had HP Coolsense on my friends Windows 7 laptop. Is it still working on my PC or do I need to get other software? Also I've seen a closed thread about this but It had no ...
0
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0answers
29 views

Suspend or turn screen off when logged out - Ubuntu 13.10

When I am logged in to my Ubuntu 13.10 desktop, the Power settings and Brightness & Lock settings are applied properly. When I log out, my monitors stay on and the computer never suspends. I ...
0
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0answers
13 views

not booting on battery - ubuntu 1204 on probook 4445s

There were no problems after initial installation till battery drained completely while the laptop was still on. After this, booting the computer on battery - with power cord disconnected causes ...
7
votes
3answers
452 views

How do I lower the critical temperature?

I have a netbook I use for school, and sometimes it doesn't suspend properly when I close the lid, causing it to get hot inside it's case. I opened it today and it was at 150F. It worked, but I didn't ...
2
votes
1answer
41 views

Battery meter shows 6 minutes left immediately after unplugging power, and hibernates sometimes

I have a Lenovo y400. Whenever I unplug the laptop, the battery meter shows 0:06 or less and the Laptop battery critically low message pops up. It hibernates once in a while, the rest of the time it ...
0
votes
1answer
281 views

Ubuntu 13.10: Improving Power Consumption (Thinkpad T530)

EDIT: After reading @jandry's reply, I decided to give another distro with a different window manager a try to see if it is really Unity's fault. I installed UbuntuGnome, and to my utmost surprise the ...
2
votes
0answers
82 views

Hack Battery Preference for Gnome 2 MATE on Ubuntu 13.10

I am using Ubuntu 13.10 on my 32-bit computer. However, I missed the Gnome Desktop Environment so I installed MATE 2. I have encountered a problem with the battery preferences. I don't want to put ...
3
votes
2answers
172 views

Ubuntu 13.10 on Thinkpad slows down dramatically when power adapter is plugged in

When I plug in my power cable -- sometimes -- Ubuntu 13.10 immediately slows down in just about every way. This has been happening for months, but I only recently finally connected the dots, in part ...
0
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0answers
44 views

System not going to sleep (Ubuntu 13.10)

I have a Toshiba L505D laptop running Ubuntu 13.10. I like to watch Netflix (Pipelight) when I am going to sleep. I have noticed that my system is not fully "going to sleep" when I wake up. I have a ...
0
votes
0answers
24 views

How to temporarily disable Xfce monitor power off via bash

I have set up my monitor to go off after some minutes of inactivity, but when watching an internet stream in a browser this is unwanted, thus I'd like to have bash command that to disable (and later ...
2
votes
1answer
369 views

Suspend test seems to have killed my Intel NUC [closed]

I was running the daily live Ubuntu 14.04-trusty-desktop-amd64 2014-01-24 on an Intel NUC D34010WYK. It has 16GB RAM and a Crucial 240GB SSD. Was working flawlessly, except for sound, so I started ...
1
vote
1answer
46 views

DPM in ubuntu 13.10

I've read that AMD Radeon driver got dynamic power management support with Linux which means that the GPU and memory clocks adjust dynamically based on load which is very useful for saving power. So ...
0
votes
1answer
97 views

What's the purpose of /etc/pm/config.d and power.d?

What is the purpose of /etc/pm/config.d and /etc/pm/power.d? It's my understand that scripts in /etc/pm/sleep.d are run at the time of a power management event such as the computer sleeping, ...
0
votes
1answer
272 views

Suspend/Hibernate broken on Macbook Pro 10.1 retina with Ubuntu 13.10

I installed Ubuntu 13.04 on my Macbook Pro 10.1 with Retina display using this tutorial. Then I upgraded to 13.10. Everything works great and I really enjoy Ubuntu except for one issue. Whenever I ...
1
vote
1answer
82 views

Which service (ubuntu 13.10) is putting my laptop to sleep when I close the lid?

I run a netinstall of ubuntu 13.10. When I was on 12.10 I had a a sleep.sh script in /etc/acpid that would be invoked by the closelid event in /etc/acpid/events and then basically run pm-suspend. I ...
1
vote
1answer
90 views

PowerTOP: why sum of “Power est” values is much less than discharge rate?

I'm running Ubuntu 13.10 on a MSI gs70 Stealth laptop. When I run powertop 2.4, I see: The battery reports a discharge rate of 38.1 W The estimated remaining time is 0 hours, 5 minutes Summary: ...
0
votes
1answer
88 views

Could not stat the resume device file

I've copied one disk content to another disk and now when system boots I get this: resume: libgcrypt version: 1.5.0 resume: Could not stat the resume device file '/dev/sda6' please type in full path ...
0
votes
0answers
44 views

PowerTOP: what is “System baseline power”?

I'm running Ubuntu 13.10 on a MSI gs70 Stealth laptop. When I run powertop 2.4 it tells that (Device stats tab): The battery reports a discharge rate of 39.8 W System baseline power is estimated at ...
0
votes
1answer
43 views

“Shut Down” and “Restart” from system (drop-down) menu inactive

The "Shut Down" and "Restart" options from the menu (see image below) are not responsive (nothing happens after I click either of them). A few minutes after launching Ubuntu the "Restart" option ...
1
vote
0answers
135 views

Battery issues - Lenovo Ideapad Z460

I've been using Ubuntu 13.10 on my Lenovo for more than 5 months without a problem. Yesterday I disconnected the AC adapter to take the laptop with me to the couch and it simply shut down. So I ...
1
vote
1answer
96 views

How to permanently set CPU power management to the powersave governor?

I'm currently using this: cpupower frequency-set --governor powersave but it resets after each reboot.
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0answers
55 views

Fan noise after windows 8 dualboot ubuntu 12.04

I decided to dualboot Ubuntu 12.04 LTS on a laptop with preinstalled Windows 8. After some work i got both running. After the install the fans became alot louder (in both ubuntu and windows 8). So i ...
0
votes
0answers
80 views

fglrx and the broken atieventsd daemon (+maybe improve your battery life for AMD card owners)

I've been playing about with these things lately, and discovered a couple of things about the fglrx driver on Ubuntu that I thought worth sharing in the context of a broader question. The atieventsd ...
1
vote
1answer
118 views

Battery issue in Asus with ubuntu 12.04 [closed]

I have an Asus N550JV-C232H, and I have installed Ubuntu 12.04 LTS and my laptop can't charge anymore. It's a new one. I had previously Lubuntu (for 2 or 3 days before installing Ubuntu), and I didn't ...
1
vote
0answers
242 views

Do the aticonfig --set-powerstate and aticonfig --lsp options no longer exist?

When I try either of these options I get aticonfig: unrecognized option '--lsp' aticonfig: parsing the command-line failed. Does the latest fglrx driver not make use of these power setting ...
0
votes
0answers
30 views

MATE fails to follow profiles

I'm having an issue with the MATE desktop. I installed it about 2 weeks ago, and there were seemingly no errors. It installed all of the required packages just fine and the desktop itself starts, and ...