Questions related to power management, particularly power saving measures.

learn more… | top users | synonyms (1)

0
votes
0answers
57 views

How to set discharging preference of batteries in Lenovo Thinkpad R400 in Ubuntu?

I have Lenovo Thinkpad R400. I have standard battery and second battery in Ultrabay slot. I want to set preference so standard battery discharges first and then starts discharging the second ultrabay ...
2
votes
0answers
48 views

Battery Icon does not work properly for dual batteries

I have two batteries for my laptop, one is the built-in battery and the other comes from keyboard (X1 Helix if you want to know how that works). The way it works is: laptop draws power from ...
0
votes
0answers
17 views

Ubuntu 13.10: Unusable when gaming with power not plugged in

I'm still pretty new to Ubuntu, but I have been having issues gaming when not plugged into an outlet. When I am plugged in my laptop runs flawlessly, however, when not plugged every thing runs fine ...
0
votes
1answer
543 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.
3
votes
1answer
165 views

Laptop freezes on battery Dell Inspiron 3521 - Ubuntu 13.10 Gnome shell 3.10

I am running Ubuntu 13.10, Gnome shell - 3.10 on Dell Inspiron 3521 (bought almost one year ago). Initially it worked fine, but now laptop is suddenly freezing. Nothing works then, no mouse, no ...
0
votes
1answer
72 views

Battery consume

i know this is a frequently asked question. After trying win 8.1 and latest opensuse i feel ubuntu 13.10 to consume much power. Lenovo B590 notebook with 1TB 5200rpm hdd, 8 gigs of ram, i5 2.5GHz ...
0
votes
2answers
194 views

Why does my computer (almost) randomly power off? (GPU Kernel Panics?)

I've always had a problem running any sort of Linux distro on my machine. I'm a gamer and tend to spend most of my time in Windows and I have never had any issues when it comes to stability of my PC, ...
0
votes
1answer
105 views

Which icon does indicator-power use when fully charged?

This is a minor annoyance. Using Xubuntu 14.04. I installed the latest Faenza icon set. Unfortunately, it's missing the icon for when the battery is fully charged (adapter is connected). It looks ...
1
vote
0answers
460 views

How to calibrate the laptop battery on 12.04

Since a couple of days or so my laptop (asus n76vm) does a hard shut-down when the battery indicates 20% life left. It just cuts off the power, no shut-down screen or anything, making the hard drive ...
1
vote
1answer
55 views

Activate Tp-bat-balance

I have a t400 with an ultrabay battery. How do I get this to work? I want to balance the batteries discharge. I am coming from Windows so I don not know much about Linux. Any help is greatly ...
0
votes
0answers
19 views

Ubuntu needs mouse hit to shutdown

My devices can't shutdown "automaticly". I have two machines with the same troubles: 1)On notebook: Notebook can't shutdown automaticly, when the battery capacity is extremely low. I applied ...
0
votes
2answers
262 views

Overheating, faulty laptop - How to prevent overheating?

I have a problem with my laptop. It overheats. In Windows 7 I use 80% Maximum Power State under power options to workaround the issue. Is there a similar solution available for Ubuntu? Can I set my ...
0
votes
0answers
16 views

Linked problem with a Windows program which I need to run one time

When I have used Windows 8 I have set to keep battery life with Lenovo Power Management. It have charged battery to 60% and keep it so. One time I have started my laptop without battery and this ...
0
votes
0answers
24 views

Ubuntu won't start unless laptop is plugged in. This has happened on 2 different laptops

So, I've been using Ubuntu on an off again for a few years, and I decided to permanently install it on a spare laptop that was gathering dust. It worked fine, but I did notice one little quirk, that ...
0
votes
0answers
21 views

Customise Suspend operation or create custom power option?

So basically I am using Ubuntu saucy salamander and I would like to be able to wake it from suspend over wireless. I can already do it when it has a wired connection but this doesnt really fit my ...
0
votes
1answer
127 views

Mouse turns off after a few seconds (Ubuntu 13.10, Windows 8.1) [duplicate]

I tried lsusb and I can see my mouse in the list. I tried for foo in /sys/bus/usb/devices/*/power/level; > do echo on > $foo; > done But I got this reply bash: ...
0
votes
0answers
26 views

Help Plz. Screen Power Down & Lock Will Not Work.

So I have a problem here. I have it set so that my screen turns off after 30 mins of inactivity and so that the screen will lock after the screen is turned off. Only thing is is that it is not ...
3
votes
2answers
812 views

How to shutdown Ubuntu after (2 hours) of idle?

Running: Xubuntu 14.04 32bit. I have read several outdated, not working, working different that I want answers here and elsewhere. I had a script that resulted in shutting my Laptop down at boot time ...
0
votes
0answers
55 views

How can i change startup applications in Lubuntu

I installed xscreensaver in lubuntu 13.10 and it wont start up auto. Neither will my power manager (using a laptop) I do not see "Startup Apps" anywhere
1
vote
1answer
60 views

Laptop does not stay suspended/hibernated

I have a Toshiba Satellite C855D-S5307. The computer came with Windows 8 and all the power functions seem to work fine with Windows. Whenever I install Ubuntu 13.10 (or any equivalent ie. Linux Mint, ...
0
votes
0answers
174 views

Why is my WiFi so slow?

I have an Alienware M14x-R2 laptop that I use with dual-booting Windows 7 / Ubuntu. In Windows 7 I have no problems with it at all, but I don't have any of my important software set up in Windows so I ...
1
vote
2answers
193 views

Fans are always running

Whenever I turn my laptop on my fans are running as if I was playing a game. The air coming out is cool, none of my computer parts are warm. I am running Ubuntu 13.10 and I have a Dell Inspiron 3521. ...
1
vote
0answers
116 views

Why do some of my powertop commands not work

I'm trying to make my powertop tweaks permanent. I ran sudo powertop --html and the I have a list of the commands I need to add to /etc/rc.local. I added them to /etc/rc.local and most of them work, ...
0
votes
0answers
47 views

Poor battery life: cron jobs running even in suspend

I was trying to figure out why my battery was dying out really fast even when in suspend mode. I noticed that my cron jobs run even when my laptop is suspended. I do not want this behavior. Cron ...
6
votes
2answers
680 views

How do I get a wireless USB keyboard to to wake Ubuntu 13.10 from suspend?

My PC with Ubuntu 13.10 is set to suspend after 30 minutes of inactivity. Up until it suspends I can resume working at any time using my Logitech K400r wireless USB keyboard. The OS defect/problem ...
0
votes
0answers
91 views

AC power plug/unplug events

Running Ubuntu Server 13.04 (kernel 3.8.0-19-generic)* . I want to react when AC power is applied or removed. I can query the state correctly either through acpi -b or cat ...
0
votes
1answer
29 views

can't reconnect via ssh

Pretty sure I'm doing it wrong, but I'm not at home right now and while using an ssh connection to my computer, my connection closed and I can't reconnect. I'm about 90% positive that my computer shut ...
1
vote
0answers
22 views

slow machine when waking from suspend

I am using xfce4-power-manager to take care of screen locking and suspend when I close the lid of my laptop. It's a great little utility! However, when the machine wakes from suspend (which is to ...
0
votes
0answers
330 views

Lenovo IdeaPad U430 Touch battery not charging, tlp installed with no acpi_call module

I have recently purchased a Lenovo ideapad U430 Touch. I have successfully installed Lubuntu 13.10 with Kernel 3.11.0-18-generic. Everything has been relatively painless. I've installed tlp for ...
1
vote
0answers
87 views

How to stop battery from overcharging? [closed]

I am new to Ubuntu, since I switched from Windows8. I have an ASUS x402c laptop, so I can not remove the battery from it. On Windows8 when the battery was fully charged, Windows automatically switched ...
0
votes
1answer
119 views

How-to stop computer locking when lid closes?

Here are my power settings: How do I stop the computer locking when I close the lid?
0
votes
1answer
37 views

Laptop turns off on its own in 13.10?

I recently upgraded to 13.10 from 12.10. It's now showing the battery info wrong and it keeps turning off even with 60% of power remaining, and without warning. When I resboot the PC, it works fine ...
0
votes
0answers
106 views

Keyboard doesn't work after waking Ubuntu from suspend, wakes automatically after opening lid

I have Ubuntu 13.10 installed on Toshiba P55-A5200. The keyboard doesn't work after waking it up from suspend, so I have to restart it. Also, whenever I open the lid it wakes up without me pressing ...
0
votes
0answers
36 views

How to have different screen dimming profiles for AC & battery (13.10)

This has been asked before but not yet answered: I'm looking for a way to have a different timeout for screenlock & dimming depending on whether I am on AC or battery power. Currently the only ...
0
votes
0answers
66 views

Ubuntu 13.10 Saucy false low battery warning

When I unplug my charger from the computer, about 80% of the time, I get a low battery warning saying my computer is about to suspend (when I'm fully charged with a brand new battery. Clearly the easy ...
2
votes
0answers
125 views

Prevent resume from suspend on lid open for 14.04

I'm running Ubuntu 14.04 on an Asus n550jv. I had this problem in 13.10 also. I want to disable resume-from-suspend when the laptop lid is opened. The traditional answers to this involve echo "LID" ...
1
vote
1answer
93 views

Get information about my PSU

I want to know what kind of power supply I have and what wattage it has. I tried: sudo dmidecode -t 39 but that didn't show any specs. What do I need to do? I am on Ubuntu 13.10
0
votes
0answers
44 views

Power actions don't work as they are supposed to?

I want to change closing lid and power button actions so I used Power Management in the settings, I've changed "when lid is closed" to do nothing in both AC and Battery, and "power button action" to ...
0
votes
0answers
24 views

port power related function is not calling while the insertion/removal of usb device from usb port

I trying to understanding the usb power manageent , while debugging there is no port power function is called while the insertion/removal of the usb device from the usb port. I am also trying to ...
0
votes
0answers
145 views

My Laptop Not Charging And Brightness Keys Not Working After Installing Ubuntu 12.04.3 LTS

I have Lenovo(G-505s) Laptop with per-installed windows 8. Recently I'm installed Ubuntu 12.04 through CD. But after installing my laptop battery not charging and my brightness keys not working in ...
0
votes
0answers
15 views

Ubuntu consumes more power than Windows-What to do? [duplicate]

I want to install Ubuntu on my Dell Inspiron 15 (i3). However, I found that the battery drains much faster than Windows 8. I read that Windows controls load to the processors, graphics card and fan, ...
1
vote
0answers
116 views

Hibernate dialog apears but doesn't hibernate?

Followed this Question and now whenever I press the button hibernate it just take me to the login screen. For critical battery I wanted it to hibernate on specific battery % and for that I followed ...
1
vote
0answers
7 views

unable to edit settings for dirty memory

Ive been reading for quite some time on trying to edit the dirty memory settings and for some reason i cant save changes to any of the files even when I use sudo. The biggest reason I want to change ...
0
votes
2answers
402 views

Fan is constantly on when plugged, but goes silent when only on battery

Problem Fan is constantly on when a laptop is plugged and not charging. Not noisy, but definitely audible. However, it occasionally stays silent (spinning slower or not spinning at all) when laptop ...
1
vote
0answers
104 views

Ubuntu 12.04, asus f550c : it do not go in power save mode

If I remove the charger from my laptop asus f550c, it do not go in power save mode, as I can see from the applet CPU frequency scaling indicator Indeed, usually if I suspend the laptop, it has very ...
0
votes
1answer
43 views

Scheduled Power On/Off of 2nd HDD

im using a ubuntu 13.10 Server. I want to switch off the 2nd HDD completely and only power it up once a week to back up the system+data from the 1st HDD. I know how to use crontab, but I dont know how ...
1
vote
1answer
695 views

Ubuntu Battery not charging or not detected

Here is question/answer just to help the community. I just bought a new ASUS N750J . I had some issues installing kubuntu. Problems were the CPU FAN always running at full speed, battery not ...
0
votes
1answer
45 views

PC System Status Bios visible through shell?

I am looking to view some settings that are visible through the bios in the command line. Our system has a built in holdup charge (shows SUSV status in bios) that I would like to poll regularly for a ...
2
votes
2answers
1k views

Cannot increase wifi card power using iwconfig

So I set up a hotspot using hostapd, isc-dhcp-server and MASQUERADING. The hotspot works and I can access Internet. Problem The connection speed is too slow. When I connect to my hotspot (via ...
0
votes
1answer
48 views

How do I guard ubuntu for power outage?

I develop industrial equipment with embedded PC and Ubuntu 12.04.3. Web server(apache) and DB(sqlite) running automatically when I turn on this PC. User can't shutdown in the correct sequence. ...