Questions related to power management, particularly power saving measures.

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0answers
95 views

Hibernate dialog apears but doesn't hibernate?

Followed this Question and now whenever I press the button hibernate it just take me to the login screen. For critical battery I wanted it to hibernate on specific battery % and for that I followed ...
1
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0answers
7 views

unable to edit settings for dirty memory

Ive been reading for quite some time on trying to edit the dirty memory settings and for some reason i cant save changes to any of the files even when I use sudo. The biggest reason I want to change ...
0
votes
2answers
305 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
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0answers
93 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
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1answer
39 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
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1answer
380 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
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1answer
40 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
881 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
45 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
427 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
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0answers
80 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
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1answer
145 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
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0answers
78 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
41 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
154 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
85 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
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0answers
58 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! ...
2
votes
1answer
236 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
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0answers
55 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
83 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
30 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
78 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
807 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
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0answers
60 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
61 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
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0answers
125 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
36 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
19 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
532 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
44 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 ...
1
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1answer
814 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
94 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
265 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
votes
0answers
50 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
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0answers
43 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
1k 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 ...
0
votes
1answer
50 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
242 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, ...
-1
votes
1answer
459 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
97 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 ...
0
votes
0answers
38 views

Instead of booting up, Ubuntu shutdown if It was scheduled to shutdown while the lid is closed

I sometimes use wget or any other tool to download big files or a number of big files with take time. So I run the following commands sudo su wget http://bigfile ; wget http://bigfile ; wget ...
1
vote
1answer
137 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
211 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 ...
1
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0answers
76 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
56 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
173 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
384 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.
1
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0answers
86 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 ...
2
votes
0answers
142 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 ...