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Questions tagged [power-management]

Questions related to power management, particularly power saving measures.

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KDE suspend after idle not working (but can suspend manually)

I am able to suspend my desktop just fine if I select "leave -> suspend" from the KDE menu. However, I also have "suspend session after 60 minutes" configured in the energy saving tab of the system ...
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13 views

ubuntu 18.04 server logout how to login

I have set my server based on this post because the vanilla desktop power management fails (whenever I try to turn it off, the button snaps back to the on mode). It works fine through ssh now. ...
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22 views

Is this issue with hyperthreading and suspend a design flaw?

I have a Dell xps 13 (9343) on ubuntu 18.04 (kernel version 4.15.0-42-generic) with BIOS version A18. I'm having problems with suspend/resume, but only when hyperthreading is disabled in the BIOS and ...
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5 views

Apcupsd startup issues

having trouble getting apcupsd to start up properly. when I put in: in the GNOME startup application . apcupsd starts, but apcaccess status shows "COMMLOST" on the USB port. Yet, if I type in , I ...
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33 views

Lubuntu 18.10 LXQt power button actions

My system shuts down when I push te power button instead of suspending like most laptops. There are many complex forum solutions for that on the net, but I like to solve it with this command: "...
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29 views

How to turn-off the wifi power management in Ubuntu 18.04 live

I'm running the Live version of Ubuntu 18.04 from an external drive and i need it to run continuously. I've already set it to never lock correctly but the WiFi turns of after some time. I have tried ...
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27 views

What does pressing Alt do when suspending the computer?

This question is related to my previous question, where I saw weird behaviour with my 18.10 installation after waking the computer from suspended mode. I figured out that I was using an incorrect ...
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19 views

Is there a way for Powertop settings to be used only on battery?

I want Powertop settings to be used when laptop is on battery power, and for them to be on the default values when the laptop is on A/C. Is this possible?
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1answer
113 views

GNOME - How do you remove the power, sound, and internet panel indicator?

I am in the process of customizing my GNOME Desktop for a new Ubuntu derivative I am working on. On the panel, there is a little indicator or applet, I don't know what it's called, but I need to ...
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1answer
46 views

unable to power off macbook display w/ ubuntu server

I have two macbooks, one running 16.04 server, another running 18.04 server. I'm trying to disable the monitors to save power It seems setterm is the command I should be using based on this power ...
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1answer
54 views

No Suspend on lid close

I recently noted that my Thinkpad X1 Yoga (1st Generation) will not enter the suspend mode any more when I close the lid of the notebook. I updated from Ubuntu 18.04.2 to 18.10 recently but I am not ...
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1answer
40 views

Unable to set suspend timeout

At some point Suspend when inactive stopped working on my system. It used to work, but now regardless whether I set it via System Settings or dconf-editor, sleep-inactive-ac-timeout goes back to 0 ...
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32 views

Ubuntu 18.04LTS shows wrong battery level on fully charged, but Windows 7 shows correctly

I use Ubuntu 18.04LTS dual boot with Windows 7. When I plug charger while using Ubuntu it shows fully charged and I unplug charger, battery level is on 94%. But when I boot Windows 7, and when battery ...
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1answer
18 views

How to keep Wake On WirelessLan enabled after shutdown / reboot

My Latitude E7240 running Ubuntu 18.10 has Wireless Wake On Lan capability and the option is enabled in the BIOS. While the Wake On Lan is working like a charm with ethtool, the Wireless variant ...
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18 views

Laptop battery won't chage after dual boot to unbutu 16.04

About a month ago, I encountered an issue where after booting into Ubuntu instead of Windows, neither OS would charge my battery. Both operating systems indicated the battery was charging, but neither ...
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76 views

Ubuntu 18.04 not showing low battery warning

This question might seem very basic. I am new to Ubuntu (recently moved from Windows). I am using Ubuntu 18.04 and it doesn't show warning when my battery is low, instead laptop automatically turns ...
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13 views

How to refresh battery life estimate with gnome?

Unlike with windows, the battery life estimates for my x1 extreme tend to be inconsistent. When power use is high, the estimates go down but when I'm not using a lot of power then they should go up ...
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23 views

Battery not getting charged after switching to Ubuntu 18.04 from Windows 7

Previously I was using Windows 7 on this device and it was pretty normal. It's a VPCCB35FN model from Sony Vaio (64-bit). Now I've switched to Ubuntu 18.04 and I've noticed that my battery is not ...
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8 views

Kubuntu wifi doesn't work on lid down(doesn't turn off)

I'm using Kubuntu 18.04. Wifi doesn't turns off but just stops working. Settings are saved to "Do nothing" on lid down. This is my settings for all of the 3 tabs. Wifi just stops receiving frames on ...
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0answers
18 views

Is there a way to configure the polling interval of UPower?

On Ubuntu 18.04, Upower 0.99.7 polls battery status every 2 minutes. Is there a way to configure the polling interval, e.g., 10 seconds? I couldn't find any in /etc/Upower/Upower.conf file. If ...
3
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1answer
64 views

Bionic Beaver settings menu items missing

Can you tell me where my power, display and other buttons are? Ubuntu 18.04, gnome-control-center is installed
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25 views

Lubuntu 18.04 battery not detected

I installed Lubuntu 18.04 in my laptop HP and since then the battery does not work anymore. If disconnected from the plug the pc does not switch on. When plugged the battery icon shows "0% in charge"....
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37 views

Laptop freezes when charging mostly

I have a Lenovo laptop that first was on Windows 10 and had constant freeze that needed hard restart to work again(with the button). I decided to install Ubuntu as I thought that it was due to ...
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42 views

Touchscreen unresponsive after reboot

Sometime in the last 3 days, I rebooted my laptop and found my touchscreen was no longer working. I Don't think the kernel has been updated, which means there's either a hardware problem, a recent ...
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1answer
74 views

CPU frequency at minimum, both on AC and battery. BIOS problem?

My CPU frequency is stuck around the minimum 800 MHz on my Dell Precision 5520. I've exhausted the solutions out there. Background My problem is quite similar to this question, but just that my ...
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0answers
75 views

Low battery notification on Ubunut 18.04

I was getting low battery notifications earlier when I installed initially, but it seems to broken now, my laptop Asus shuts down without any warning at 20% remaining battery. I tried sudo apt-get ...
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1answer
22 views

No-GUI automatic console screen off when idle

I'm searching and searching and having a hell of a time finding out how to set a workstation install with the GUI disabled, to blank the screen automatically after being idle for a bit. Anything to ...
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1answer
32 views

Shutdown Timing When Computer “Ignition” Goes Low

I'm running ubuntu 18.04.1 LTS on an embedded "automotive" computer that's powered with 12VDC (no AC!). It has 3 power inputs: Power (12V), Ground and something labeled "ignition." When "ignition" ...
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52 views

Are extended tlp functions available on my Lenovo Thinkpad 11e w/ Ubuntu 18.04?

I just installed Ubuntu 18.04 on my Thinkpad 11e recently and have been learning what I can do with the command line. I just learned about tlp and installed it to manage my battery life. I also ...
0
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1answer
40 views

MSI boot on power on

This is really about what is likely a simple setting or motherboard jumper setting that I have missed. What I want to do: Following shut down through OS and then power off via mains I want the PC to ...
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0answers
49 views

Lock screen immediately powers off my monitors in Ubuntu 18.04.1 LTS [duplicate]

Every time I lock my screen with Super+L all my displays automatically switch off. How can I stop my displays from ever switching off? This is very annoying as I am using external displays at work ...
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48 views

S.M.A.R.T. prevents HDD disk going into Standby

I use the Disks application (preinstaled in Ubuntu 18.04) to configure standby timeout of my HDD disk. By using the Drive settings... -> Standby menu I've configured Standby Timeout to 15min. The disk ...
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1answer
17 views

Thinkpad X201 battery sometimes shows 2% for a few hours

I am new here so thank you for the welcome! I am having a few issues with my Thinkpad X201 running Ubuntu 18.04 that I was hoping you could help me with. Most of the time, everything is fine with a ...
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27 views

How do I disable LED lights on Dell Latitude D620? (power, hard drive, battery, wifi) [closed]

(Summary: How do I disable lights on the laptop hinge showing power, WiFi, etc. activity?) On the Dell Latitude D620 laptop hinge, below and next to the screen, above the keyboard, on the right hand ...
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16 views

2012 11" MacBook Air automatically turns on when power cable attached

I installed Ubuntu 18.04 on a 2012 11" MacBook Air and enabled disk encryption. When I turn off the machine, I wait for the disk to encrypt and the machine to power off. Then I close the lid. In ...
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122 views

Ubuntu Battery Life on XPS 13 9343

Running Ubuntu 18.04.1 LTS on my Dell XPS 13 9343 (2015). From my experience, Windows would get me around 5-6 hours comfortably, and in comparison Ubuntu seems to top out at 4-5. I've installed TLP ...
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198 views

CPUs switching to very low speed in 18.10

Since updating to Ubuntu 18.10, CPU power management seems to be having problems. I think (not sure) it occurs when the laptop starts running a little hot, and the intel_pstate switches the CPUs to a ...
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32 views

MAME on Ubuntu 18.04 is turning off DPMS / Energy Star monitor blanking?

MAME Arcade Emulator seems to be turning off DPMS screen blanking (Energy Star) which means that if I leave MAME running, my monitor never blanks. I can't find where in the source code this is ...
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0answers
47 views

Laptop powers off instead of suspending when power reaches critical-battery-level

I am running Ubuntu 18.04 on System76 laptop. I am able to successfully suspend the laptop manually. However, the laptop powers off instead of being suspended when critical battery level is hit. ...
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107 views

Substantial battery life improvement in 18.10. But also video flickers. Are they related?

In Ubuntu 18.04, my battery life was getting so poor that I ordered a new battery from Dell. I was already doing everything to save battery, running with not-bright screen and the low performance ...
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0answers
118 views

How can I make the screen not lock when I close the laptop in Ubuntu 18.04?

I think it is annoying that I have to enter my password every time I close the lid of my computer. There was a setting when the lid is closed: do nothing. in earlier versions, but this feature seems ...
0
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1answer
22 views

Dell Inspiron 7537 wifi adpator disabled when lid closed

I've just switched to Ubuntu 18.04 on my Dell laptop and I'm having an issue whenever I close the lid. The wifi adaptor is disabled and the PC requires a restart to enable it again. I've tried turning ...
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0answers
43 views

Ubuntu battery life on Macbook Air (6,2) - 14.04 (good) vs 16.04 and 18.04 (kinda bad)

14.04: When I initially installed Ubuntu 14.04 on my 6,2 MacBook Air, I was flabbergasted by the reported (and actual) battery life: OS X reported ~12 hours Ubuntu 14.04 reported ~14 hours (yes, my ...
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0answers
48 views

How to convince Xubuntu 18.04 LTS to put montior to sleep?

I use xscreensaver for screen locking. The screen locks automatically as configured. But, recently, my montior has stopped going into power saving mode even though I didn't change any settings. If I ...
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0answers
15 views

Ubuntu won’t restart with modem usb inserted

I may need to update this with more info later today but... I’m using an MTC-H5 modem through a USB connection with Ubuntu to upload data from a remote location. So it is important to have a script ...
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1answer
60 views

When closing the lid of my laptop nothing happens instead of suspend) [duplicate]

I have Ubuntu 18.04 installed on my Lenovo Thinkpad L560. When I close the lid nothing happens. I want the system to suspend. The settings for this are turned on. So when I close my lid and reopen it ...
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0answers
20 views

MacBook Air 6,2 wakes slowly (suspends when I tell it to resume)

I've been dual booting my MBA with Ubuntu (first 17.10, now 18.04) and have a fairly stable system. One problem I've had for some time is a slow wake/recovery from sleep. This is unpredictable and ...
2
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1answer
108 views

Buggy powersave in Bionic 18.04

I'm having problems with the powersave mode, I hope someone can help ;D PREVIEW INFO: I have installed: tlp, powertop, nvidia privative drivers When I start the laptop on battery mode the graphic ...
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0answers
191 views

Ubuntu 18.04 external screen close lid action

I started using external display on my Ubuntu 18.04, and I found the problem where after closing lid Ubuntu automatically switches to the second screen instead of suspending/hibernating the system. I ...
0
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1answer
61 views

wifi hardware disabled after suspend mode

Firstly I am a new user of Ubuntu. I am having a problem with the WiFi. I installed Ubuntu alongside Windows 10 in dual-boot. Firstly I didn't have WiFi connection so I installed the drivers by myself....