Questions related to power management, particularly power saving measures.

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2answers
624 views

Bad battery life on Xubuntu 16.04 Lenovo T460s

the battery life of my new Lenovo T460s is very bad (about 4,5h with a little bit browsing and half display contrast). Xubuntu 16.04 shows two batteries (SANYO 00HW022 and SANYO 01AV405). They were ...
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2answers
102 views

Is there a 'Power Monitor' for Ubuntu GNOME?

I am running Ubuntu GNOME 15.10 with GNOME 3.18, and there is one thing lacking, a power monitor tool which will display the status, the one in Ubuntu MATE looks like this: Ubuntu (Unity) also ...
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1answer
14 views

Playing video prevents sleep on low battery

When a video instance is displayed (firefox/chromium html5 video, openshot video editor etc.), the computer does not go to sleep under any circumstances, and it is even forced to stay until the ...
1
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0answers
87 views

Can't resume after suspend and power off issues with ubuntu 14.04

I installed a fresh copy of Ubuntu on my desktop computer and now I face several power related issues: Can't resume after I suspend the system: When I suspend the system, it screen goes blank and ...
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0answers
55 views

Can't power off the computer running Ubuntu 14.04 LTS

I know this question has been asked so many times. For 2 days I keep trying to figure out how to shut down and power off my computer but it just wont power off. When I click "Shut Down..." from the ...
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0answers
22 views

Ubuntu 14.04 panel shows battery level as arithmetic mean of laptop and bluetooth mouse levels

I have two notebooks (Asus Zenbook and Lenovo Thinkpad) with Ubuntu 14.04 installed and both show the same behaviour: The battery level indicator in the Unity panel shows the exact arithmetic mean of ...
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0answers
30 views

How to force enable Turbo Core (AMD) on Ubuntu 15.10?

I'm running a Samsung Ativ Book 9 lite with Ubuntu 15.10 installed. The processor is supposedly equivalent to an A6-1450 Temash 1.0 GHz (1.4GHz boost) The problem I'm having is that turbo mode only ...
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1answer
62 views

Lenovo b50-10. unclaimed hardware

Since installing linux mint 17.3 the following is not working: wifi (stops after a few minutes), bluetooth, shutdown or hibernate, DVD not mounted. I have tried all the solutions I've found on ...
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0answers
19 views

How configure Ubuntu to suspend after inactivity based on time of day?

I know we can configure Ubuntu to go to sleep after being inactive for "x" amount of time. But I want that to be based on time of day. Say, suspend computer if it has been inactive for 1 hour and it ...
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1answer
41 views

Laptop battery high/low alarm

My laptop battery didn't last half as long as I had hoped and it is an internal one. That is, it is very inconvenient to replace. I would like my replacement battery to last as long as possible, and ...
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0answers
60 views

Laptop not resuming after suspend

Today, I got a couple updates to my laptop running Ubuntu 15.10. Now when I suspend my laptop either with the suspend button or by closing the lid, it doesn't resume after I open the lid or touch ...
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1answer
62 views

Laptop not properly suspending after I close lid

Dell Inspiron 3542. When I close my laptop lid and put it in my bag, I often take it out later to find it extremely hot and with the battery drained. I also often find that my monitor turns on ...
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2answers
145 views

Ubuntu doesn't look like sending power to an usb port used by a device that uses 2 usb ports to function

Update since the latest release of displaylink drivers this issue was solved - it was a driver issue I'm connecting a Lenovo Thinkvision Displaylink USB external monitor to a Lenovo Thinkpad ...
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0answers
31 views

Battery Status not updating

After I installed Ubuntu 14.04 (before I had Ubuntu 13.10), the battery indicator stopped working properly. It always shows the battery level that was at the start up (when I open the laptop and boot ...
0
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1answer
66 views

BayTrail CPU and Ubuntu 15.10

I have a machine with an Asrock q1900b-itx mobo and I'm experiencing random freezes of the system. By freeze I mean everything hangs and there is absolutely nothing that can be done except reset. I've ...
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0answers
33 views

Suspend Troubles on Ubuntu 15.10 32-bit

I am running Ubuntu 15.10 32-bit on my Acer C720 chromebook. The screen keeps on turning off and the system keeps on suspending even when I set both the "Suspend when inactive for" settings in the ...
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0answers
30 views

Radeon driver power levels on RV670

I have just installed Ubuntu 15.10 on an AMD64 box with a Radeon HD 3850 graphics card (RV670, AGP version) and I'm using the radeon driver that comes with Ubuntu. So far, everything is working fine. ...
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0answers
19 views

charging capacity while dual booting?

sorry if this has already been answered, I looked around for a while(here/online) and could not find the case of dual booting but just Ubuntu standalone. Say I have a dual boot win7 and Gnome. How ...
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1answer
112 views

Intel wireless works only when acpi=off on 16.04

I've bought recently brand new ThinkPad X1 Carbon 4th generation, trying to set up Ubuntu 16.04 (beta 2 at moment of writing). Can't get wireless and ACPI working together, they kind of exclude each ...
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0answers
32 views

how to make sure ubuntu will suspend after 30 minutes does not matter what program is running

Last night I was running a vlc program and also using flash in firefox. Usually I set the computer to suspend when inactive for 30 minutes, but it did not. I want to suspend my Ubuntu after 30 minutes ...
0
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1answer
28 views

xfce4-power-manager closed when Battery is removed

I am Running Lubuntu 15.10. And I remove my Laptop battery during night times to prevent overcharging of my battery. And for some reason xfce4-power-manager is closed when i remove my battery(While ...
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0answers
30 views

Interpret upower result (laptop battery dead ?)

I recently and sudddenly had my laptop battery which display that it is fully charged but directly switch off when i try to disconnect the power cable. Laptop have less than one month and is seems ...
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0answers
44 views

Suspension problem

I recently installed Ubuntu 14.04 LTS to dual boot with Windows 8.1. In the past (immediatly after installing Ubuntu) after I suspended my computer the screen went black. But I "corrected" this ...
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0answers
12 views

Higher Power consuming turned off Display

i have a question about the power consumption of my laptop. I wanna setup my laptop as an small media server, because of that i was checking the power consumption and found out that the laptop need ...
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1answer
106 views

Ubuntu keeps resetting HDD APM level to 1 on wakeup from suspend

I have a problem with my Ubuntu 15.10 amd64 system on my ASUS R513C laptop. I am setting the APM level on my HDD to 254 by running sudo hdparm -B 254 /dev/sda by hand and this fixes a problem with ...
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0answers
43 views

Performance mode in a Desktop enviroment

I'm running Ubuntu Gnome 15.10 x64 in a desktopPC. What really annoying me is that each restart or start begin running in a power-safe mode.. It could be useful with a laptop, but in a desktop ...
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0answers
36 views

rtl8723be high power power consume Ubuntu 15 and 16

i am using this driver power-consuming by powertop is: 10.1 W 9.3 pkts/s Device Network interface: wlp4s0 (rtl8723be) i think this driver had some problem and that is cause of this problem. ...
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0answers
30 views

My laptop doesn't get suspended properly

On Ubuntu 14 it's worked well always. But on Ubuntu 15.10 when I close the lid, it's not going to sleep properly anymore: the display gets "black" but the laptop actually doesn't get suspended because ...
3
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1answer
32 views

run script when power mode changes

I wrote myself a bash script and when this script is called it changes my display brightness. Now i want to run this script when my ac-adapter is unplugged or the ac-adapter gets plugged in. Where can ...
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0answers
20 views

Massive throttling when switch from charger to battery on Ubuntu 15.10

When I watch a 1080p video on youtube, I got easy 60 frames/s. But when I plug out the charger the framerate drops below 20 f/s (even if battery is 100&). The governor is set to performance, but ...
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0answers
25 views

Power brightness issues

I recently switched to Xubuntu from windows. GOOD RIDDANCE! Anyway I cannot adjust my screen brightness and it is really dim. My computer is a Samsung NP470R5E. I am running Xubuntu 14.04. Any advice? ...
0
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1answer
74 views

Disable sleep on laptop lid close in tty1

I'm using Ubuntu Desktop 15.10 on a laptop and it runs an Apache server with SSH as well. When using a GUI, I have the power options set to not sleep at all even when the laptop lid is closed, but ...
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0answers
35 views

Ubuntu 15.10 on laptop only wakes up by opening the lid

I have a HP Spectre XT with a defective display (which I disconnected) and use an external display, keyboard and mouse. The laptop so just functions as a desktop. I use the power button on the ...
0
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3answers
57 views

Energy management Ubuntu

I don't have a problem with ubuntu, everything is working fine, but I'm wondering if it can be more power-efficient. For now I have installed tlp, powertop, and cpu-frequency-scaling-indicator. When ...
1
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1answer
98 views

Automatically reduce brightness on battery in Ubuntu 15.10?

How can I automatically reduce brightness when I unplug the AC in Ubuntu 15.10? I tried modifying dconf-editor settings as suggested here, http://askubuntu.com/a/312619/511925, but there are no ...
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0answers
26 views

xfce power manager makes wrong notifications

xfce Power Manager shows random notifications about my laptop running out of battery, but I am plugged in. Then it pops a notification saying I am plugged in, then another saying it is discharging, ...
1
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0answers
43 views

Battery status seems to be stuck

I have a Dell Inspiron 3000 series with Ubuntu 15.10. I noticed a few hours ago that the battery status remained unchanged (at 45%) and it said 1:40 hours left for full charge. I tried removing and ...
1
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0answers
61 views

Ubuntu 14.04 wakes up immediately after suspend or shut down after network card firmware update

I know there are many topics regarding the problem of ubuntu waking up immediately after suspend/hibbernate/shut down. Unfortunately I have not found anything that helped my case. First of all my ...
1
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1answer
35 views

Whats happened to the battery? Help understanding the BAT0 report

my laptop's battery seems dead(the laptop only runs with the AC plugged in), but the BAT0 report says the following: ▶—— NOTEBOOK BATTERY (BAT0) ——◀ Complete Report: Name ...
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0answers
23 views

Trusty 14.04.4 Laptop powers off unexpectedly

Recently upgraded the HWE to the Wily stack (Kernel 4.2) on my Thinkpad T410. Now, even when on AC, the laptop powers down for no reason. Originally I thought it was due to inactivity and suspected ...
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0answers
23 views

Battery Indicator come and go

I've searched Ask Ubuntu and the web but couldn't find a similiar issue, so: After reinstalling Ubuntu 15.10 on my notebook (Toshiba Satellite U940-120), the battery indicator shows up after start ...
0
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0answers
34 views

Battery indicator shows opposite state: charging when discharging and vice versa [15.10]

So, pretty weird bug. As the title says, when my battery is charging, it says the power is draining (the symbol changes and it tells me how long is left until I'm dead), and when the power is not ...
1
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1answer
69 views

Menu for hibernate does not work, pm-hibernate does

After upgrade to 15.10 I have been unable to activate hibernation from the start/stop menu. Doing so the following error appear in dmesg: PM: Swap header not found! I have checked again that my: ...
0
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0answers
36 views

15.10 Hibernate not powering PC off

Ubuntu 15.10 with 4.4 kernel on Dell XPS 15 9530 (new one). System do not powering itself off after hibernation. Executing pm-hibernate does almost all except notebook will stay under power. The ...
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0answers
28 views

UPS integration with Ubuntu 14

I'm interesting the opportunity UPS integration with Ubuntu 14. UPS Mustek PowerMust 800 USB connected to the desktop computer. NUT server is configured (blazer_usb driver). Both work correctly KNUT ...
0
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1answer
92 views

15.10 - Suspend job starts by itself - docked laptop - closed lid - ext. display

I have just installed and set up my HP Elitebook 8440p with Ubuntu Gnome 15.10 64bit and Gnome 3.18 During the installation, everything went nice, while the laptop was docked and the lid was closed. I ...
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0answers
37 views

Ubuntu 14.04 'Suspend' won't work - Samsung ATIV Book 9 Plus

so I'm really new to Ubuntu 14.04 (installed it last night--Windows 10 November build was not compatible with my model). Currently I have my boot partitioned, and everything has been working smoothly ...
0
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1answer
42 views

How I can modify the “hibernate” option in the power menu

I can hibernate correctly my laptop, by the command sudo pm-hibernate. Even the resume works well! But if I try to hibernate by the power menu (Unity on Ubuntu 14.04 with hibernate option enabled), ...
0
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1answer
70 views

Keep Screen On When Watching Online Videos

I really like Ubuntu 14.04 so far. But when I watch a video on-line, I need to move my mouse every few minutes to avoid screen going black - highly annoying and doesn't make much sense when nearly ...
0
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1answer
38 views

Lenova Thinkpad power button does nothing

I have installed Ubuntu on many computers, both desktop and laptop, and the power button opens the power menu asking what to do. However, I just got a Lenova Thinkpad T410i secondhand from a friend. ...