Questions related to power management, particularly power saving measures.

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7 views

how to stop web pages from preventing screen dimming?

I noticed my monitor stopped dimming a few days ago. I have found that by closing a certain webpage I tend to leave open in Chrome - or even making it not the active tab - the screen dimming works ...
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0answers
14 views

Ubuntu showing incorrect battery percentage on MacBook Air (2011). Is it a bug?

I am running Ubuntu 16.04 on a 2011 MacBook Air (directly, not using virtualization), and the battery percentage seems off. I left the charger plugged in until the LED turned green, and yet the Ubuntu ...
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0answers
15 views

Battery drains fast in Ubuntu14.04LTS. Screen goes out when switched to NVidia proprietary driver

I am facing power issues on my HP Pavilion 15 - p073tx laptop running on Ubuntu 14.04LTS. The battery drains much faster as compared to when I run Windows(I have a dual boot). One solution I found is ...
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0answers
12 views

How to disable USB3 LPM (hardware-controlled power management)?

I have some issues with USB3 flash drives in Ubuntu 16.04. They keep going into U1/U2 mode (see here for more information), occasionally resulting in I/O errors. I already disabled traditional (...
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1answer
14 views

I need to make a usb port to be dumb to any devices newly connected

Could anyone help me with my trouble with usb? It sounds ridiculous probably but I need to make one of usb ports do not answer to any devices programmatically. But I need the port to continue provide ...
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0answers
23 views

How do I configure power & sleep settings on Ubuntu Server 16.04?

I'm trying to run a LEMP web server on a spare laptop (HP 2000), but don't want the display to always be on, nor do I want it to sleep. I have the basic server part done. Thank you!
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0answers
10 views

Energy activity monitor [duplicate]

I’ve seen some graphical programs that show the current energy consumption of running programs. Is there anything that will display the average energy consumption of any programs that have been ...
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0answers
24 views

Power saving mode in ubuntu [closed]

Is there any built in power saver mode in Ubuntu? If not, why is it so?I wish to do a project on it.
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0answers
5 views

Screen flickering when battery low in Kubuntu 16.04

some days ago I tried to install nVidia drivers but nothing came up, so I reverted (or I guess so) to the "original" situation. Everything works fine (actually I don't neet my card, integrated ...
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1answer
48 views

Are there any power consumption indicators?

I would love to see how much power my notebook is consuming all the time. Therefore I want an indicator that constantly (interval of 1 second maybe) monitors the current power consumption (measured ...
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1answer
25 views

battery from laptop does only work when power cord is plugged in

I'm using a Asus laptop, about three years old and since I Switched to Ubuntu (16.04) it shows that the battery is fully charched, but when I disconnect the power cord, the laptop turns off. I can't ...
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0answers
19 views

mate panel power button doesnt work any more

So a friend of mine deleted his power button, and I was about to tell him, hey, reset it with the command: mate-panel --reset (I ran it to verify that it would work, before I would tell him to do it) ...
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0answers
26 views

Totally disabling shutdown?

I have a few systems running 14.04 LTS that my employees keep shutting down. I don't really have any need to shut the systems down ever, as long as I can reboot if it ever crashes. How can I totally ...
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2answers
34 views

Why does Toshiba C50-C stay hot while suspended

I have installed Ubuntu 16.04 64 bit along side Windows 10 on a Toshiba C50-C. Intel I7 gen 6, 8GB RAM, Nvidia Geforce 930M, Intel Dual Band Wifi 3165 Everything works perfectly except Suspend. The ...
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0answers
20 views

Computer shuts down when I close the lid

I'm using a dell inspiron laptop with dual booted ubuntu and windows10. Ever since I dual booted ubuntu, every time I close my lid for more than a few hours, my laptop shuts down. The settings are set ...
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0answers
54 views

Ubuntu 16.04 LTS - Poor battery life on Intel HD Graphic

I just switched from Windows 10 to Ubuntu 16.04 LTS and I am quite satisfied with it after installing and configuring Gnome Shell. However, like everyone, I encounter a significant drop in terms of ...
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0answers
70 views

Ubuntu 16.04 doesn't suspend and shut down properly

I installed Ubuntu 16.04 alongside with Windows 10 a month ago. All this time I've noticed that after some time working, when I close laptop's lid and after open it, Ubuntu won't run. And I hear that ...
1
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1answer
28 views

Screensaver/black screen doesn't start on its own

Running 16.04, 5 minute inactivity timeout, sometimes the screensaver (or blank screen, to be accurate) won't start until I hit Super+L and lock the session. Suggestions? Running Nvidia 367 drivers, ...
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0answers
8 views

How to replace Suspend with Hibernate on a laptop with kubuntu16.04 [duplicate]

I dont have any option for hybernation. sudo pm-hibernate works so its a supported function. How to do it when my lid is closing instead of Suspending?
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1answer
23 views

Why does my laptop's screen remain black when I try to unlock it?

After locking my laptop, every so often, when trying to unlock it, the screen remains black. I see no cursor, and I can't switch to any of the other TTYs either. I end up having to hard reset it. I'...
0
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1answer
71 views

[16.04]Laptop behaves awkwardly when I'm running ubuntu

This may seem strange. But last month I bought a new laptop from HP and I installed Ubuntu 16.04 along side windows 10. From a month now, I'm observing quite unnecessary things going on and a bit ...
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0answers
24 views

Battery Use Grouped By Application

Is there a way (other than powertop) I can see how much of my laptop battery's charge was used for each application over the current discharge cycle similar to how Android Marshmallow does?
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1answer
72 views

Intel 7260 bluetooth device (usb-device-8087-07dc) at 100% usage

My Intel 7260 bluetooth device is constanly draining battery. As per powertop: 13.9 W 100.0% Device USB device: usb-device-8087-07dc I have both bluetooth and NFC ...
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0answers
73 views

Suspend problem on Ubuntu 16.04

I installed Ubuntu 16.04. When I run the terminal command sudo pm-suspend my computer suspends, and pressing any key brings it out of suspend. But when I press the "Suspend" key on the keyboard or ...
4
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1answer
90 views

Cooling fan never reaches high speed, even if clearly needed

CPU consumption goes very high (which obviously shouldn't) when watching video on Chrome. This is due to some regression that has appeared recently (it wouldn't happen before), but that is not the ...
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0answers
45 views

Ubuntu 16.04 failing to suspend and opening applications by itself

I have a very strange problem. After installing stock Ubuntu 16.04, I noticed that whenever I close the lip on my laptop and come back a few hours later, every application (on the launcher) is running ...
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0answers
13 views

Power issue in Ubuntu 14.04

I am running Ubuntu 14.04 on my laptop. After recent system updates, I encountered a problem with my battery. My laptop battery from 40% directly start showing 2% and after that laptop hibernates ...
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2answers
66 views

Help for suspending session or hibernating

I installed Ubuntu 16.04 LTS. I want to put the system in suspend or hibernate mode and I have activated hibernation. When I do sudo pm-suspend or sudo pm-hibernate, the system apparently obeys, but ...
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0answers
35 views

Mac Air won't resume from suspend when lid is closed for a long time! Ubuntu 16.04

I have tried using the recommended command: sudo gedit /etc/systemd/logind.conf to activate suspend mode by removing the comment sign from the relevant line in this file. However, it seems that ...
2
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0answers
43 views

How to enable “sleep after x minutes of inactivity” on Ubuntu Server 16.04 without third party software?

So how do I know it's not working? Well on my MacPro, I set it to go to sleep after 15 minutes of inactivity. The monitor turns off and then the fans and all lights turns off. This doesn't happen on ...
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0answers
13 views

Car Media Server: Power Management Strategy

Got my mobile media server working in my car, but now I need to figure out how to get it to hibernate when the car turns off and wake when the car turns back on. HARDWARE SETUP COMPUTER:...
2
votes
1answer
221 views

Ubuntu 16.04 (Mate) - Draining Battery when powered OFF?

I have a fresh installation of the lastest Ubuntu 16.04 MATE on my new Laptop with all the latest Firmware / BIOS installed. For some reason the battery gets drained while the machine is powered off (...
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0answers
78 views

How to force powersave to a slower CPU speed on ubuntu 16.04

I have a system76 laptop running ubuntu 16.04 the fan constantly comes on unless it's on powersave mode and the cpu MHZ is running around 1000hz. The issue is the powersave mode doesn't always take ...
0
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1answer
21 views

Sleep on unplugging with lid closed

I want the machine to stay on when I close the lid when plugged in (keep things running overnight, etc.), so I have it set that way, but if I then unplug it with the lid down, it seems the power ...
1
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0answers
33 views

How to power off discrete graphics card

I installed Lubuntu 16.04 to my HP Pavilion dv6 laptop which has AMD 6770M discrete graphics card. In order to save battery I want to power off AMD card since onboard Intel HD3000 is enough for me. I ...
1
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1answer
108 views

Undervolting CPU with ubuntu 16.04

I was looking into undervolting my laptop CPU. I could only find guides on phc that are said to be outdated. Is there a tool for that in the new version? Is it possible with TLP?
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1answer
65 views

how does exactly suspend works in ubuntu?

I like to know how exactly suspending proceeds in Ubuntu, Is any hardware completely cut from power or their process is just minimized? Other than the screen which parts are put on hold or their ...
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0answers
54 views

'Clearing orphaned inodes' and state lost on hibernation resume

I installed a fresh 16.04 LTS. I have been experiencing some problems with Wifi applet display error (after resume from Suspend) and with hibernation resume. I enabled hibernation on menu using the ...
1
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1answer
56 views

Dell Power Managerment Drivers for Ubuntu 16.04

On Windows, Dell Power Management drivers are available for laptops for maximizing the health of battery. Due to drivers on Windows, Desktop Mode and Logetivity mode are available for maximizing ...
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1answer
32 views

With 16.04 my machine shuts down then restarts when battery level is critically low

I thought I had set my machine such that it would shutdown when the power was critically low on battery. In org.gnome.settings-daemon.plugins.power, I have set use-time-for-policy to false (i.e. no ...
0
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0answers
35 views

Card reader draining battery in Dell laptop?

I just bought a brand new Dell laptop and installed Ubuntu 16.04 on it. The battery started acting strange, i.e.: draining rapidly, and at times the system will shut down (when unplugged) even if ...
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0answers
21 views

Laptop sleeps even though sleep is disabled

I am running Ubuntu on a Lenovo IdeaPad Flex 10. The laptop is being put to sleep after 15 minutes of inactivity even though I have disabled sleep. In my power management settings I have set sleep ...
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0answers
44 views

Suspend not working on HP Pavilion g7

Suspend does not seem to work on my HP Pavilion g7, on which I have just installed Ubuntu 16.04 Xenial. I am not quite sure how to fix this, the issues on the internet usually relate to being able to ...
1
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1answer
48 views

16.04 - When Laptop is closed, the desktop changes to external monitor

When I close my laptop, I want that the laptop suspends. I already set the power settings to "suspend" like in the linked picture (language is set to german). But instead of going into suspend mode, ...
2
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0answers
43 views

Laptop doesn't suspend after closing lid

None of the solutions on here have worked for me. Recently I've installed Lubuntu. I'm getting used to DE (switched from GNOME), however, I have a problem with the power management (Lubuntu uses xfce4 ...
0
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1answer
49 views

Ubuntu ultrabook

I have a question considering ubuntu & ultrabooks. The problem is, a need a new computer. I'm looking for an ultrabook-like laptop which runs with long battery life (even under ubuntu) but I don't ...
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0answers
48 views

Battery capacity below 100% in Dell laptop and battery misbehaving

I just bought a Dell Inspiron 15 5000 laptop with a AMD A10-8700P CPU. I removed Windows 10 and installed Ubuntu 16.04. When plugged in, at random times, the battery icon will appear showing that the ...
0
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1answer
60 views

How to prevent Xubuntu from suspend?

Apparently, Xubuntu is totally unable to wake up. So when it goes to sleep, for whatever reason, you lose all usaved work. No Ctrl+Alt+F1, nothing. It is there, the machine is on, but the only thing ...
4
votes
0answers
56 views

indicator-power status change delay

I recently migrated to 64 Bit 16.04 LTS from 32 Bit 14.04 LTS on my Toshiba L645 laptop. I am facing an issue with power indicator on the unity panel. When I change the power source to battery from AC,...
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0answers
113 views

Hibernate does not work on Ubuntu 16.04?

I followed some threads here and was able to enable the hibernate button on the top right menu. But when I hibernate, my laptop screen goes off but the laptop is still running. I know that because the ...