Questions related to power management, particularly power saving measures.

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0
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0answers
109 views

Ubuntu 16.04 won't shutdown

On my MSI GS60, when I try to power off Ubuntu 16.04 LTS the laptop will not shut down. Reboot works fine though. I have removed the quiet splash parameters for grub so I can see the output. When I ...
0
votes
1answer
24 views

echo 1 > /sys/bus/pci/slots/$4/power bash: /sys/bus/pci/slots//power: Permission denied

On typing echo 1 > /sys/bus/pci/slots/$4/power, I get this error: bash: /sys/bus/pci/slots//power: Permission denied Here is the output of lscpi -vvon my system: 02:00.0 Multimedia controller: ...
0
votes
1answer
106 views

Kernel build 4.4.0.22 decreases battery life (16.04 LTS)

My battery life was fine when I installed 16.04 LTS (clean install) on my Lenovo z51-70, but after a regular software update or build to kernel, from 4.4.0.21 to 4.4.0.22, it has almost halved (1.50 ...
1
vote
3answers
267 views

Xubuntu 14.04 fails to resume from hibernation [duplicate]

Not a crucial issue, it's just annoying when it happens. My computer has a great chance to fail in resuming from hibernation. When it happens, the console prints the following info and then hangs: ...
2
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0answers
23 views

Is there a way to disable sleep of a remote computer from command line?

It's an Ubuntu 12.0.4 computer that I have access only through ssh. How to prevent it from going to sleep?
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0answers
14 views

Bluetooth loses connection with mouse in 14.04

recently i bought Thinkpad bluetooth mouse (OA36414) however, the mouse lose connection from my laptop (ubuntu 14.04) from time to time which troubles me a lot. I have read this enter link ...
0
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1answer
42 views

Battery information is wrong

I have replaced the battery in my laptop with a lower capacity battery than what was previously inserted. Ubuntu hasn't calibrated the battery metering system, and so the statistics & percentages ...
0
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0answers
39 views

Power management, caffeine and crash problems-Kubuntu 16.04

I have installed kubuntu 16.04 about 2 weeks ago and I ran into tons of problems since then. I have suceeded in resolving couple of them but the ones listed in here are too much for me to handle. I am ...
0
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1answer
49 views

Ubuntu drains battery very fast on 16.04

I have Dell XPS L502X I have installed SSD of kingstone 120 gb After that i have i have installed ubutu 16.04 and my battery drain very fast at 100% charging work 1 hour and 13 minutes while in ...
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0answers
24 views

Mint + Kernel 4.5.4: laptop loses suspend state when unplugged [closed]

I'm using Linux Mint 17.3 on a newish Asus laptop with Mate desktop. To get the Nvidia graphics and Elan touchpad both to work, I installed the 4.5.4 Linux kernel. I've pretty much got everything ...
4
votes
4answers
3k views

Docky is closing when I plug/unplug the AC cable

Every time I plug/unplug the power cable docky is closing. This thing is happening since I have updated to 14.04, also, my battery life seems to be shorter. I am using a toshiba satellite c55-A-1PX.
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0answers
17 views

How to disable Bluetooth devices from turning off due to inactivity in 14.04

I am fairly new to Ubuntu. I know in Windows OS you can disable Bluetooth power management, which disables the devices from turning off/going to sleep. I would like to disable that for Ubuntu 14.04 ...
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votes
0answers
24 views

Kali Linux is not shutting down after installing dual boot on HP Pavilion g6-2320tx [closed]

After shutting down Kali Linux I encounter a problem it kills all running processes and screen goes black,my computer doesn't power off. The fans still run and the screen is still on, etc. I have to ...
4
votes
1answer
249 views

Laptop battery keeps discharging even after full charge (not switching to AC)

The laptop does not switch to AC mode after fully charging. I dualboot and this problem is nonexistent on Windows 10. But on Ubuntu 15.10 it just keeps discharging. Problem persists on Ubuntu 16.04 ...
1
vote
3answers
98 views

In Ubuntu 16.04, which ACPI Global State does Suspend result in?

I have read the post on "What is suspend". However, I would like to know exactly which ACPI Global State does pressing the Suspend button lead to. Can someone explain this? Specifically, how do I ...
0
votes
1answer
60 views

How to configure power managment with tlp?

I have a similar issue like this user, that is my hard drive overheats. I'm running Ubuntu MATE 15.10, which has tlp, and I've read that they should not be installed together. So is there a way to ...
2
votes
1answer
830 views

How to prevent battery charging unless dips below 95%? on an Asus U31SD-XH51

I have an Asus U31SD-XH51 laptop running latest Ubuntu 12.04 LTS and I want to know if there is a way to prevent the system from charging the battery unless its charged level dips below 95%? This is ...
2
votes
2answers
4k 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. ...
1
vote
1answer
59 views

pm-suspend works, but clicking on “suspend” from GUI menu does nothing?

If I run sudo pm-suspend, it suspends correctly, and resumes too. No issues. But the OS timeout setting of "5 Minutes" from the "Power" menu in settings does not suspend the machine. Also, the GUI ...
0
votes
2answers
151 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 ...
0
votes
0answers
19 views

Power Failure on Software RAID 10: is automatic resync enough?

I had a power failure on a server (Ubuntu 12.04.3 LTS ) with a raid 10 array. When I restored the power, in dmesg there was the message: md/raid1:md1: not clean -- starting background reconstruction ...
3
votes
2answers
287 views

Laptop won't suspend on 16.04 (Kernel 4.4.8)

So I had Kubuntu 16.04 which had been upgraded from 15.10. Always worked fine and slept when I closed the lid. I installed Ubuntu (switched from Kubuntu) (clean install, formatted root partition) ...
0
votes
1answer
28 views

Running xfce4-power-manager as daemon with ubuntu 14.04 and awesome

I'm running default ubuntu 14.04 in combination with awesome WM 3.5.9. To enable proper suspend when I close my laptop lid I enable xfce4 after login through the following awesome command which makes ...
1
vote
1answer
228 views

MAAS Power-on problem IDRAC IPMI 2.0

I'm currently having a problem in getting MaaS (v1.7) to properly provision a Dell PowerEdge R630 server. The MaaS vm itself is able to detect the server automatically, and once the dell server boots ...
0
votes
0answers
14 views

Authenticate to suspend?

Fresh install of LUbuntu 16.04 on a Compaq CQ58 (El cheapo AMD C60 laptop from Wal*Mart, bought on Black Friday 2012.) I walk away from it and it's supposed to suspend. I come back to an ...
2
votes
2answers
67 views

Can I have a countdown window show the time until next suspend?

Occasionally I leave my computer unsuspended when I need to go somewhere but I am leaving it with people I absolutely trust and I will be back shortly so no real need to suspend (like if it's family ...
4
votes
2answers
7k views

xset: unable to open display

for the longest time after about 5 minutes my screen would blank out. Now the screen will go blank after 5 minutes but then 2 seconds after that it will light up white and keep the laptop ...
362
votes
8answers
305k views

How to enable hibernation?

In Ubuntu 12.04 and newer, hibernation has been disabled by default in policykit. How can I enable this back?
92
votes
4answers
261k views

How to control fan speed?

How can I control the computer's fan speed? On Windows there is a wonderful program called SpeedFan.
0
votes
0answers
11 views

Restrict waking up from suspend to specific buttons only

I have an Acer Aspire notebook with 16.04 installed on it. Currently when I suspend, it wakes up on basically everything, including: opening the lid pressing the Power button pressing any keyboard ...
137
votes
4answers
121k views

Is there a power saving application similar to Jupiter?

I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there a similar program or a way to manage the power settings on 13.04?
2
votes
2answers
1k views

Reduced battery life in my netbook

I notice my battery is getting empty quickly while using Ubuntu 11.10. When I am using Windows 7 with the same power settings and usage, I get a back up of around 3 hours whereas in Ubuntu it is half. ...
0
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0answers
52 views

HP Probook 450 G3 doesn't work suspending when lid was closed on ubuntu 16.04

Have a small problem - my laptop cannot suspended when lid was closed. It's doesn't work only on ubuntu 16.04, on previous versions all works good. The power settings configured correctly (set sleep ...
1
vote
1answer
271 views

Poorer battery life after kernel upgrade: 4.5.2 (16.04 LTS)

When I first installed 16.04 LTS, at kernel 4.4.0, I had a decent battery life of about 3 hours average, but I upgraded to 4.5.2 to solve the suspend problem and some other issues, and now it's less ...
0
votes
0answers
55 views

Ubuntu 16.04 Won't Power Off

I own Asus E402S Laptop, and it's not shutting down. It only stays at the "Ubuntu" logo. I've tried this link for solution. 00:00.0 Host bridge: Intel Corporation Braswell SoC Transaction Router ...
4
votes
3answers
576 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 ...
15
votes
6answers
35k 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 ...
0
votes
0answers
87 views

Lenovo z50-70 “dust removal” (reverse fan) on Energy Manager with Ubuntu?

I have a Lenovo z50-70 and under Windows 8.1 and Windows 10 I had the "Lenovo Energy Manager" software with a "dust removal" function, that basically made the fan turns backwards to shoot the dust ...
0
votes
1answer
47 views

Does pm-powersave start automatically when running on battery?

So I just learned a bit more about pm-powersave, but couldn't find if it automatically kicks in if you're running battery power. Does somebody know if it does this? And if not, is there a way to make ...
0
votes
0answers
38 views

Ubuntu Touch - setting the low battery warning level and behavior?

I had always assumed that if a battery is full, and a smartphone is connected to a charger, then the phone would simply disconnect power from the battery charging circuit once the battery is full, and ...
0
votes
0answers
24 views

Thinkpad T410S Suspend Problem

I recently bought an old Thinkpad T410S and everything was fine until recently occured a problem with suspend. When I press Fn+F4 (suspend button), laptop turns off screen, but do not suspend and ...
5
votes
3answers
197 views

i3 throttled at 500Mhz when battery under 30%

I have the following problem. As soon as the battery drops below 30%, the CPU is being throttled to 500Mhz. As soon as I plug in the power adapter, it goes back to normal. The laptop is a Lenovo ...
0
votes
1answer
35 views

How to set hard drive spindown while plugged into AC power on Ubuntu Server 16.04

I have created a personal file server running Ubuntu server. My only problem is figuring out how to have its hard drive spin down after x minutes. I managed to read the 20hdparm file and it states it ...
0
votes
0answers
29 views

Install perf at 4.5.2 kernel

Does perf affect battery life? At 4.5.2 kernel stable in 16.04 LTS the TLP output states: /sys/devices/system/cpu/intel_pstate/min_perf_pct = 18 ...
0
votes
0answers
89 views

how to setup cpupower at boot time in Ubuntu 16.04?

Ubuntu users! I have a Intel computer running basically as a HTPC machine for years 24/7 and at a certain point in time the Linux kernel started to use the intel_pstate driver for my i7 Ivy Bridge (I ...
11
votes
5answers
20k views

Laptop does not suspend when lid is closed

I'm a new Ubuntu 13.10 user. Closing the lid of my laptop does not result in the computer entering suspend mode, meaning each time I close my lid without manually suspending the computer the battery ...
50
votes
4answers
31k views

Hibernation is still missing from menu in 13.10 after enabling via polkit. How to enable?

I know that since 12.04, we need to add a policykit rule to enable hibernation (see question How to enable hibernation? and the Official Documentation). I can successfully bring my laptop into ...
0
votes
1answer
228 views

Upgraded Ubuntu 16.04 sometimes fails to sleep

I upgraded my system from 15.10 (Ubuntu + xfce = XUbuntu) to 16.04 and afterwards it happens 50% that when I send system to Sleep through "start menu > turn off > sleep" that screens go blank and ...
0
votes
1answer
102 views

How to change Power-Button to Suspend in 16.04?

I know the answer here about How do I modify the options for the power button? However, the dconf-editor is completely different than in previous versions. There is no Settings-daemon. It looks like ...
0
votes
0answers
13 views

How to install power utility?

When I shut my laptop screen, and again when I open it, there's nothing on screen. Again I have to press the power button and start Ubuntu again. What should I do?