Questions related to power management, particularly power saving measures.

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45
votes
3answers
2k views

How to get the “Your battery is broken” message to go away?

Every time I turn on my computer, I see a message saying something like: Your battery may be old or broken. I am already aware that my battery is bad. How do I suppress this message?
1
vote
0answers
13 views

How to disable automatic shut-down on low power (Ubuntu 15.04)?

So apparently there's a nasty bug on my laptop (an Acer Aspire 3810T) that makes Ubuntu freak out when plugging/unplugging power. Frequently, it claims the battery is at 0% when switching power ...
0
votes
0answers
12 views

Fan Periodically Overspeeds When On AC Power

My laptop is a Dell Inspiron 15R 5520 and for a while I have noticed that when it is on AC power, its fans will temporarily run at max for several minutes before returning to normal operation, and ...
0
votes
0answers
9 views

Powertop systemd service failed to load

After my installing of powertop and calibrating it, I create systemd service with following text: [Unit] Description=Powertop tunings [Service] Type=oneshot ExecStart=/usr/bin/powertop --auto-tune ...
37
votes
1answer
27k views

Is “laptop-mode-tools” still relevant for 12.04 and the 3.x kernels?

I'm using Ubuntu 12.04 x64 and trying to choose power management software. Laptop-mode-tools have a lot of features, but the only reason why I'm worry about is that it's manual and config files are ...
0
votes
3answers
871 views

Power management for wireless unable to turn off in Xubunu 15.04 Vivid

I have tried everything that i can find on this site as well as the internet to turn off power management for the wireless card. My current conf user1@user1-Q500A:~$ iwconfig eth0 no wireless ...
0
votes
0answers
14 views

intel pstate, turbo always on cpu temp is 60 and without only ~43

I have a problem with pState on my Thinkpad L450 with Intel 5200U (broadwell) + SSD. When I use pstate, the turbo mode is nearly always turned ON and my CPU fan is also always ON because cpu temp is ...
0
votes
0answers
29 views

Suspend/Hibernate/restore and Reboot problems 15.04 Dell Inspiron 3451

There are many posts and questions about problems with lid closing leading to operating system states which require hard reboots; these reports come from across multiple kernels and releases of ...
0
votes
0answers
8 views

Computer won't restore from monitor power saving

When monitor power saving mode is on and the monitor falls asleep, I can't wake it up and have to do a hard shutdown. I've tried pressing keys, moving and clicking the mouse, unplugging and replugging ...
0
votes
1answer
40 views

How to scale intel_pstate driver on Ubuntu 15.04?

I nearly tried all the solution to scale the cpu frequency but no success. I have Intel Core i5-3210m 2.5Ghz-3.1Ghz. I want to permanently set it to 1.6Ghz with no turbo boost to improve battery ...
-1
votes
0answers
17 views

Problem with backlights in suspend ubuntu 15.04

i have problem with my backlights (i guess) when i put my laptop to suspend or closing the lid is goes everything in normal system will suspend but when i want to open up system will run but blank ...
5
votes
2answers
163 views

Is there any way to make Ubuntu not to suspend while a download in progress?

Is there any way? How to script in /usr/lib/pm-utils/sleep.d to check ${downspeed eth0}, ${upspeed wlan0}, ${upspeed eth0} and ${downspeed wlan0} and to set the system not to suspend while a ...
0
votes
0answers
17 views

Heating, projecting and lid closing problems in Ubuntu Gnome 15.04

Ever since I upgraded from Ubuntu 14.04 to 15.04 in April this year, I have been beset by productivity-reducing problems. I had started off unable to get the login screen on booting which got resolved ...
12
votes
6answers
29k views

Scheduling StartUp and ShutDown

I use Torrents often, so I need to know how to make my computer start up and shut down automatically, Wi-Fi is switched on at six in the morning in my hotel and switched off at two AM. (I am able to ...
2
votes
2answers
3k views

Lubuntu 14.04 Tired about suspend e hibernation “power manager not authorized”

Below the post, last configuration I used, it seems works well. I've Lubuntu 14.04 installed on my netbook (aspire one ao-532h). I am using it like a desktop with external display and input devices. ...
0
votes
0answers
14 views

PC is shutting down although the battery is charged 50% of above

I'm using Ubuntu 14.04 the problem is when I am using pc with plug in for charging or without charging from starting time it working normally.But when I plug out the pc from charger when the pc is ...
3
votes
0answers
28 views

Why does my computer try to shut down when I plug in headphones?

Using Ubuntu 14.04LTS. Noticed that when I plug in headphones, a menu appears asking if I want to "lock, suspend, restart, or shut down." Is this normal? How do I fix this if it isn't normal?
0
votes
0answers
18 views

Ubuntu 14.04 can't fully charge battery with windows 8.1 dual boot

I have a Toshiba Satellite E45t-A4100 dual boot windows 8.1 with ubuntu 14.04. There was no problem with installation. Normally the battery will charge to 70%. Sometimes it will charge to roughly 80% ...
1
vote
3answers
858 views

How to shut down Lubuntu immediately with the power button instead of a logout method dialog prompt

I would like the computer to shut down directly after I press the power button. At the moment, Lubuntu opens a shutdown method dialog box when I press the shutdown button. I suspect I can simply ...
0
votes
0answers
16 views

Lenovo B50 power management

Lenovo B50 power management is not working with Ubuntu 14 and 15 versions when shutted down the laptop is still running while only the screen is switched off, same when restarting Regards John
1
vote
0answers
31 views

14.04.3 wakes up as soon as putting to sleep

I have Ubuntu 14.04.3 32 bit OS. I set my comp to sleep after 5 minutes of idleness. It was running OK until today. I should say that handling of power management is not reliable in Ubuntu. My system ...
1
vote
1answer
49 views

How to set up gnome-screensaver?

I am running Ubuntu GNOME 15.04 and I have install gnome-screensaver, however after doing some searches through my system, and my system settings, I am unable to find any configuration settings for ...
0
votes
1answer
31 views

Disable low battery notifications/warning on 15.04

I would like to disable the low battery warnings on Ubuntu 15.04. My laptop seems to have a faulty charge port or has trouble detecting the true charge of any battery I put in it, even brand new ...
2
votes
3answers
1k views

Asus UX31 ultrabook suddenly shuts down when below 50% battery

I've heard over the years that this computer had issues with the BIOS settings but that by 13.10 it had been cleared. It never used to happen on 13.10 but now that I'm on 14.04 it started showing ...
27
votes
7answers
67k views

How can I control HDD spin down time?

I have 2 HDDs in my PC. Ubuntu is turning off the secondary HDD very quickly after about 15 minutes, which is short for me. I need to control this time. How can I do it? I tried GNOME power ...
2
votes
1answer
44 views

Ubuntu 15.04 suspend halt

I have laptop Lenovo E540 with SSD + HDD Ubuntu 15.04 on SSD with UEFI, kernel 3.19.0-26-generic Nvidia GeForce 840M with driver 346.59 The problem When I suspend the laptop, i hear HDD heads ...
1
vote
1answer
27 views

Suspending when CPU idle

I am using 14.04 (Trusty). I have Power -> Suspend when inactive for 2 hours. This works fine if I am logged in and then walk away. But if I am not logged in, it never suspends. Moreover, I understand ...
2
votes
2answers
217 views

How can I keep the computer awake, depending on activity?

I would like to be able to keep the computer awake during certain activities and longer running tasks, such as downloading larger files and watching full screen videos. I like using Caffeine to keep ...
4
votes
5answers
6k views

DisplayPort monitor not detected if switched off and on again

I am running Ubuntu Desktop 14.04 on a desktop PC with a Nvidia GTX 660 connected to a HP LP2475w 24" monitor over DisplayPort. It boots up fine, but if I switch off the monitor and switch it on ...
1
vote
2answers
775 views

Ubuntu 14.04 does not recognize my battery

For the last 3 years I've been using a Samsung notebook. I was using Ubuntu 13.10 until 2 weeks ago. Then I decided to format and install Ubuntu 14.04 LTS. Everything was working great, until the ...
3
votes
1answer
505 views

Laptop lid closed - with external Monitor

How to work on my other monitor when i close my laptop's lid? I connect my external Monitor (HDMI) to my laptop and then close the lid. Normally it (should) display everything on the external one. ...
0
votes
0answers
22 views

Battery charge limit and critical battery action

Ubuntu 14.04 lenovo z50-70 here. Here's my situation. I am using my laptop with the power cord plugged in at all times because i essentially use it as a desktop. Never leave the house with it and ...
0
votes
1answer
51 views

Battery not fully charged (it shows 100%)

Ever since I upgraded from ubuntu 12.04 to 14.04 I've been noticing that the battery does not last as much as it used to. The bar indicator shows that it is fully charged but I ran tlp-stat and I got ...
1
vote
0answers
599 views

Macbook pro Power consumption /Graphics card [closed]

I have a 10.10 install on a MacbookPro 5,3. Ubuntu uses quite a lot of power and has a really low battery life. I've already disabled bluetooth and the iSight camera. The Macbook has two different ...
0
votes
0answers
18 views

Absent power status indicator

I have no power status indicator on my top unity panel. All of the suggested solutions to restore it doesn't work for me. Also there is no power usage statistic in unity-control-center -> power ...
0
votes
0answers
47 views

Battery percentage jumps down to 6% from 50% or 60%?

So, as the title says, I have checked Power Stats in Ubuntu and Energy when Full and Energy (design) are the same which is 37.2 Wh but the percentage is funny with actual battery life left in my ...
1
vote
0answers
29 views

System restarts whenever ethernet cable is connected (and system is not connected to power source)

I have a strange problem with my Ubuntu 14.04 system. If my laptop is not connected to a power source, and I plug in my ethernet cable, the system restarts. It's an AMD processor with ATI radeon ...
27
votes
6answers
10k views

How to go automatically from Suspend into Hibernate?

Is it possible to make Ubuntu go into Hibernate state from Suspend, aka "Suspend Sedation"? For example, my laptop is set up to go into a Suspend once I close the lid. If then I don't use it for ...
1
vote
2answers
28 views

Logitech Mouse power saving

Is there a way to put my Logitech wireless mouse to sleep after a while? When using windows if I don't touch the mouse for something like 5 min it is turned off automatically and when I touch it again ...
1
vote
2answers
4k views

Message {1.079026} ACPI PCC probe failed; starting version 219

I am running Ubuntu 15.04 (Vivid Vervet) with 3.19.5-031905-generic #201504211114 kernel and GNOME Shell 3.14.4 on a Samsung NP370R4E laptop. When I boot up, I see [1.079026] ACPI PCC probe failed ...
2
votes
2answers
1k views

Docky: crash when plug/unplug power cable

Docky keeps on crashing every time I plug in or unplug the AC cable. I tried solving the problem following the instructions on this website. It worked fine for the suspend crash but when I try the ...
0
votes
0answers
27 views

Recently installed ubuntu 15.04 replacing windows 7, on thinkpad edge e430. unresolved battery issue?

tlp stat result: tp-smapi = inactive tpacpi = active i have tried (Lenovo ThinkPad Edge E430 Battery Problem), but this battery works fine on windows with think power manager. let me know if ...
18
votes
1answer
570 views

What actions does Ubuntu trigger when battery is low?

When the battery is low, the screen gets dimmed after a few seconds already. This appears to be some special power-saving mode, and might be related to the time in ...
0
votes
0answers
33 views

Issues with upgrade 12.04 to 14.04 (battery drain, freezes…)

I've been using ubuntu 12.04 for over a year without any issues with my laptop (MSI GT70.) It has an integrated intel graphics card and an nvidia GTX 870M. Therefore, I have been using the bumblebee ...
0
votes
0answers
14 views

Preformance profiles? How? 15.04

I'm experiencing a problem when using Linux (Ubuntu gnome 15.04 for now, but it does not matter what distro or DE to use). If i launch several applications my laptop stops charging, and starts to use ...
5
votes
5answers
22k views

How to make my screen brightness not change when I plug my laptop in

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 ...
1
vote
0answers
43 views

Laptop doesn't suspend when lid is closed - No state change

I have a problem about my laptop that doesn't suspend when i close lid. First the story. I bought a new Acer e3-112. It camed with win8.1 and i upgraded it to win10. Then i shrinked the hdd and ...
1
vote
0answers
50 views

Ubuntu Aquaris 4.5 battery sometimes runs down quickly when not in use?

Checking the battery use for the Ubuntu phone Aquaris4.5 it shows an almost flat line when not used (wifi enabled, otherwise all the battery saving settings used) Occasionally (3times in the last ...
0
votes
0answers
15 views

Screen Switches Off And Also Kills Downloads

Im using Ubuntu 14.04 on most of the default settings. By default the screen switches off after 5min and "dims to save power". I have unchecked the lock checkbox so when I return to my computer I dont ...
0
votes
0answers
28 views

Why does ubuntu freeze sometimes when I shut my laptop screen

I own a Lenovo Y50 running Ubuntu 15.04 64-bit and sometimes when Ii shut the screen the login screen is displayed after I open it back up again, but it is unresponsive and I can't do anything from ...