Questions related to power management, particularly power saving measures.

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0
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1answer
91 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
917 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
66 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 ...
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0answers
65 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
130 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
24 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
38 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
21 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
544 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
45 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
vote
1answer
1k 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
291 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
51 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
44 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
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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
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1answer
304 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
537 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
100 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
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0answers
39 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
152 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
244 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
vote
0answers
81 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
57 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
182 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 ...
2
votes
1answer
562 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
92 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
163 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
240 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
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0answers
330 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
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0answers
35 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 ...
0
votes
0answers
20 views

Laptop is very slow if its not using power cable

So if I only use laptops battery my laptop is very very slow. And when I use power cable there is no problems. Is there a some powersaving or something and how can I fix it?
0
votes
2answers
4k views

Asus H87-PRO /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

On an Asus H87-PRO: $ sudo pwmconfig # pwmconfig revision 5857 (2010-08-22) (...) /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed here's the output from $ sensors: ...
0
votes
1answer
136 views

How to turn off dGPU on Asus S56CB aka K56CB with Bumblebee?

I run Xubuntu 13.10 on the above-mentioned laptop, sporting Optimus. The battery life is disappointing. I'd like to improve it by means of turning off the Geforce 740 with Bumblebee but something has ...
0
votes
0answers
31 views

Powermanagement & touchpad questions

i'm a new ubuntu user, just installed about an hour ago. But the first thing i noticed is that there are basically no power management features in ubuntu for laptops (or a lack of information), ...
0
votes
1answer
279 views

SSD Spindown Settings

I have dual SSDs in my new laptop, but the second SSD isn't used as often. Does "spin-down" have any affect on SSDs for preserving battery life? Is there a delay in SSDs in the event that the device ...
0
votes
0answers
138 views

Ubuntu having problems reconnecting on wireless network after suspend

I have searched for an answer but haven't found a simple solution or one that shares my setup. This problem should be pretty clear cut so maybe someone can help. Here's my set up. Have an HP ...
0
votes
0answers
20 views

My battery status isn't showing

I have Ubuntu 13.04, 32-bit, on a 64 bit laptop, and I noticed that the battery status isn't showing at the top of the screen, and I really need to know my battery status. How can this be solved?
1
vote
0answers
76 views

Laptop with Battery is faster than Power Connection at Ubuntu 13.04

Recently, I found a very strange phenomenon on my laptop. When the laptop is plug-in the power, then the CPUs work slowly, but when it is unplugged, i.e. it works with battery, then the CPUs work with ...
0
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0answers
26 views

Laptop wakes thinking it's charging when I've unplugged it during sleep

If my laptop is plugged in as I press suspend, then I unplug it after she's sleeping, when I wake her up, she still thinks she's charging, even though the battery is discharging. To fix this I either ...
1
vote
2answers
71 views

Battery Management in Ubuntu

How can I change the Battery Management settings in my Laptop? I used to have a Windows installed and in that, the battery management program (for the sake of battery health) had the charging limited ...
1
vote
0answers
68 views

Ubuntu+Gnome3 screen not dimming

I have an Ubuntu installation with Unity and Gnome3. When I log in using Unity, if the system is inactive for X minutes, the screen will dim. When using Gnome3 the screen never dims. Under ...
0
votes
1answer
28 views

Black screen waking from suspend

I had this same problem 6-7 months ago when I first installed Ubuntu. This problem also happens if I suspend from the shutdown menu. I have searched and tried numerous "fixes" but none of them ...
1
vote
1answer
66 views

How to track temperature changes using sensors?

I have Ubuntu 13.10 with sensors installed. Everything works fine, but I'm wondering if I can somehow keep track of temperature changes. Nothing fancy - Max and Min would do. It would be even better ...
9
votes
1answer
535 views

How to control LightDM power saving preferences?

I want lightdm to enter power save after a specific period of time. If I'm logged in then my screen will time out as per the user settings, however when no one is logged in the screen will stay on ...
1
vote
0answers
524 views

Very long shutdown delay on 13.10

Whenever I shutdown or reboot, there is a very long delay (several minutes) before the system will shutdown. I was getting a nm-dispatch signal 15 so I thought the problem might be with network ...
2
votes
2answers
261 views

Laptop Heating Lenovo Z570

I have just started using Ubuntu. Loving the way it works but I am having issue with heating. It is being heating more than it did when I had Windows 7 installed. Not sure if its problem of drivers ...
0
votes
2answers
979 views

Disabling touchscreen to extend battery life?

I've read various posts about extending battery life of laptops and notebooks. And I've done various of things to extend it. But I'm wondering does touchscreen take power and how much? Would it be ...
0
votes
1answer
199 views

Iris Pro 5200 - performance when running on battery

I have a laptop from System 76 (Galago UltraPro) that runs the Iris Pro 5200 graphics . When I am running the system while plugged in the performance is great. I can play most games without ...