Questions related to power management, particularly power saving measures.

learn more… | top users | synonyms (1)

3
votes
0answers
203 views

Laptop battery always discharging

I have a fully up to date Ubuntu 14.04 on my Asus X550DP laptop. My problem is that the battery is always discharging. When I plug the AC adapter in, it charges battery up to around 96% and stops ...
3
votes
0answers
35 views

Ubuntu still shuts down after I plugged my charger in

On Kubuntu when my battery is dying and I plug my charger in, it says "All suspensions have been cancelled." On Ubuntu or more accurately, Unity-based distors, it still shuts down after plug in my ...
3
votes
0answers
576 views

How to count battery cycles?

Like most user that have searched about knows, Manufacturers ACPI implementation is a mess. And for most of our laptops, battery infos are unavailable or wrong (on a dell inspiron 15z, the rate is ...
3
votes
0answers
428 views

Lubuntu - xfce4-power-manager alternative

Can I uninstall xfce4-power-manager and set my suspend settings somewhere else? How would I be able to check my battery status? I would like to get rid of xfce4-power-manager because of my problems ...
3
votes
0answers
382 views

Secondary battery not found?

I've got a Asus TX300 running Ubuntu 13.04. This is a laptop tablet hybrid which has secondary battery in the dock. This battery is not detected by Ubuntu as far as I can see. Ran this while docked: ...
3
votes
0answers
160 views

How to tell if laptop was woken by rtc?

Say I set my laptop to wake every morning with rtcwake (e.g. echo $(date +%s 'tomorrow 08:00') > /sys/class/rtc/rtc0/wakealarm in a cron job or in /etc/pm/sleep.d/99-set-alarm.sh). Now, I'd like ...
3
votes
0answers
728 views

How to control of battery charging/discharging limits?

I'm running HP 530 laptop and Ubuntu 10.04. My old battery is died some times ago, so I have got the new one. I'd like to get possibility to change the limits when the charger starts to charge ...
3
votes
0answers
530 views

How do I control the fan on a Apple Mac Mini?

I am running 12.04 LTS on Apple mini hardware (about 4 years old). The fan seems to run non-stop. "ThinkFan" is installed but I do not know how to use it in order to modulate fan speed. The ...
3
votes
0answers
308 views

xfce4-power-manager keeps restarting after suspend

In a clean install of Xubuntu 12.04, the xfce4-power-manager keeps restarting after suspend. If i quit the program and restart it, it keeps restarting. If i quit the program and restartit a few ...
2
votes
0answers
154 views

How can I set a different screen timeout time when on battery than if I am plugged in?

Currently, Ubuntu 14.04 only provides a single option: "Turn screen off when inactive for: x minutes" that applies regardless of whether my laptop is plugged in or not. I want to change this setting ...
2
votes
0answers
57 views

hp xw4200 fan speed

I just installed Ubuntu 14.04 on my old HP xw4200 workstation (p4 3.4 GHz, 3 GB of RAM, Ati FireGL 5200). The install worked without any issue and the system seems responsive. The problem is that ...
2
votes
0answers
483 views

Laptop power saving or management in Ubuntu 14.04

Is there any sort of installation that can be added to provide power options for when I am running on battery? I wouldn't want to always be on power savings, so I would hope I could switch between Eco ...
2
votes
0answers
84 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 ...
2
votes
0answers
231 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" ...
2
votes
0answers
98 views

Hack Battery Preference for Gnome 2 MATE on Ubuntu 13.10

I am using Ubuntu 13.10 on my 32-bit computer. However, I missed the Gnome Desktop Environment so I installed MATE 2. I have encountered a problem with the battery preferences. I don't want to put ...
2
votes
0answers
295 views

fglrx and the broken atieventsd daemon (+maybe improve your battery life for AMD card owners)

I've been playing about with these things lately, and discovered a couple of things about the fglrx driver on Ubuntu that I thought worth sharing in the context of a broader question. The atieventsd ...
2
votes
0answers
88 views

Simulate AC Power Plug/Unplug

can someone tell me how can I simulate AC power plug/unplug in Ubuntu 13.10? I would like to create a script, that do something when AC power is plugged/unplugged, but is really annoying to ...
2
votes
0answers
1k views

Keep External HDMI Monitor ON

I am running XBMC (Frodo) on an Asus U47A laptop (Intel Sandybridge graphics) with Ubuntu 12.04. The laptop is connected to an older Phillips 27" tube HDTV via HDMI. What I would like is for XBMC to ...
2
votes
0answers
566 views

Disabling suspend/sleep/hibernate on a headless Xubuntu

I'm running Xubuntu 13.10 headless via ssh and tmux. Whenever I leave the machine, making sure to have a tmux session opened, it will invariably crash after about an hour. The sign it has crashed is ...
2
votes
0answers
226 views

Apple aluminium keyboard hub is supplied to little power

I have an Apple aluminium keyboard with an integrated hub. On Mac OS X, I'm able to connect both my mouse and a USB pen drive while on Linux, the power limit is exceeded when connecting more than one ...
2
votes
0answers
100 views

How can I make multiple monitors go to standby independently?

I have a two-monitor setup. One monitor I use all the time, the other sometimes. I find myself switching the second monitor on and off quite frequently, so as not to be distracted by its contents. Is ...
2
votes
0answers
234 views

How to check what suspends? Lubuntu saucy

I have a Nokia Booklet 3G and I have a problem (not one, actually) with Poulsbo suspend/resume. I installed Lubuntu saucy (beta), which runs smoother than previous versions (it actually boots, unlike ...
2
votes
0answers
44 views

How can I prevent close session/shutdown/reboot when certain console program is executing?

I want to disable close session/shutdown/reboot from Gnome (Unity/Lightdm) when lftp is executing. Is there any way? Perhaps with polkit?
2
votes
0answers
220 views

Ubuntu restarts on shutdown/hibernation commands, instead of shutdown

Friends, Whenever I am going to shutdown/hibernate my Ubuntu PC its restarting after completing their process. Mean to say if press shutdown button its shutdown properly and switch off the display but ...
2
votes
0answers
886 views

Disable HDMI sound out, for decrease power consumption

I have Ubuntu 12.04 on my laptop I'm looking for a way to decrease power consumption. This is output of powertop command Power est. Usage Events/s Category Description 1.30 W ...
2
votes
0answers
513 views

Lenovo u310 will not charge when turned on

I've looked around and had several friends have a look but we cannot figure this out. I am running Ubuntu 12.10 on a Lenovo U310. The laptop charges fine when the laptop is off but it will not charge ...
2
votes
0answers
337 views

12.10 shutdown/power-up issue

I have just upgraded to 12.10 on a Shuttle XPC which I use mainly for XBMC and have a problem with shut down/power up. When I shut down from within XBMC the box seems to shut down correctly, but it ...
2
votes
0answers
142 views

Getting the external hard-drive faster into standby

Currently, my external hard-drive is going into standby after 15 minutes of inactivity. How can I reduce this period to e.g. 5 minutes? Using Ubuntu 12.04 64-bit with Gnome Shell. Thanks in advance! ...
2
votes
0answers
408 views

How to make that closing the lid hibernate the system even if there's a secondary monitor connected?

I enjoy my Ubuntu laptop and the automatic hibernate on lid closing. Unfortunately the hibernation doesn't take place when closing the lid while an external monitor is plugged in. The monitor is only ...
1
vote
0answers
17 views

How can i use powertop to save power utilized in a perticular variable

I want to access the power utilization in c code and save it to some variable. is it possible using power top
1
vote
0answers
65 views

Lubuntu 14.04 Session loss upon screen locking and power management issues

When I screen lock (ctrl + alt + del) on my Lubuntu 14.04 LTS system, my session is restarted when I log back in. This causes me to lose any programs I had running prior to the lock. Power management ...
1
vote
0answers
46 views

Battery not detected, /proc/acpibattery empty even it is present

I'm using Ubuntu 14.04 and it is fully up-to-date. But the battery of my laptop is never detected. There is no battery icon on the top bar, the /proc/acpi/battery is empty. I've tried to remove the ...
1
vote
0answers
71 views

USB 3.0 ExternalEnclosure Unmounts at random

Title says it all. I noticed the drive was unmounted, so I got to looking through dmesg and found: [31080.516164] usb 4-3: USB disconnect, device number 3 [31080.760493] usb 4-3: new SuperSpeed USB ...
1
vote
0answers
186 views

Xfce power manager in Xubuntu 14.04 doesn't react to my choices

Okay, so I chose to make it so that when my laptop lid closes and I'm on AC (my power cord is plugged in) it will do NOTHING. But when I close my laptop lid .. it just suspends. I've tried it like a 8 ...
1
vote
0answers
22 views

System-level energy/power preferences

In Windows, mmc allows to set energy/power preferences for all users at a system-level: they can't change these settings until an administrator unlocks them. Is there any way to do the same in ...
1
vote
0answers
342 views

Lenovo x1 carbon (gen1) battery life

I'm using an Lenovo x1 carbon (gen1) and have Ubuntu 14.04 and tlp installed. I'm really dissapointed about the battery life. Some people claim to have 6 hours ...
1
vote
0answers
98 views

Battery drain and over heating on Dell XPS L502X

I own a Dell XPS L502X and it works fine if is booted under "Windows 7". No issue(over-heat or quick-battery-drain) is observed while using the laptop. After the recent installation of Ubuntu ...
1
vote
0answers
82 views

Fan not working increasing CPU temperature

I have Dell Vostro 1014 laptop. I am using Ubuntu 12.04 LTS. The fan of my laptop is not working anymore and increases the CPU temperature upto 85 degree Celsius. I followed the solution given on this ...
1
vote
0answers
99 views

Battery status not refreshing

It was working fine, but after upgrading Unity to last version, it is not refreshing anymore. The percentage and charging status remains on what it was on system startup. acpi command in terminal, and ...
1
vote
0answers
93 views

What disadvantages come with using TLP?

I use Ubuntu on desktops and laptops and am making a custom script to set things up for my school. I just discovered TLP to improve power comsumption for the laptops and want to include it in my ...
1
vote
0answers
56 views

Is There a Way to Force Lid State to Open

My Lenovo X1 Carbon Laptop with Ubuntu 14.04 has a problem where the screen and keyboard stopped working. It does work if I use an external monitor and keyboard. I think the reason for this is that ...
1
vote
0answers
71 views

How can I change power settings automatically while running VLC in Xubuntu 14.04 64 bit

I am using Xubuntu 14.04 64 bit. I usually play video using VLC media player. The problem I am having is, after 10 or 15 minutes computer turn off its display, even the video is running in the ...
1
vote
0answers
46 views

During halt system hibernates on lid closed

I use xubuntu 14.04 64bit on Lenovo g510. I disabled hibernation on lid closed in xfce power manager. On lid closed: do nothing. It works. I can close and open the lid and system is not ...
1
vote
0answers
198 views

Toshiba resume automatically after suspending in Ubuntu 14.04

I have a Toshiba L845 and i when i suspend ubuntu it wake up 2 seconds later. Here you are some info. cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic.efi.signed ...
1
vote
0answers
160 views

Laptop goes to sleep right after boot with lid closed and external monitor connected

The issue is following: laptop (HP6570p) with Kubuntu 14.04 installed, lid closed, external monitor is connected. Reboot. Laptop shows KDM login screen for a seconds and immediately goes to sleep. ...
1
vote
0answers
57 views

How to disable HP Envy light sensor auto-dimming

I swapped my windows OS for Ubuntu a couple of months ago. I had no idea HP Envy came with this annoying feature described here... ...
1
vote
0answers
192 views

Slow performance on LXDE due to power setting

I was very happy with my LXDE running on my Dell XPS 13 until, a few days ago, I found myself confronted with a dialgue box that presented the choices "desktop" or "laptop". It was set to "desktop", ...
1
vote
0answers
80 views

Open lid to wakeup the system, get white screen

I got a new Dell M3800 laptop and I use gentoo+fvwm In /etc/acpi/lid.sh , I use echo -n mem >/sys/power/state to let the system sleep when the lid is closed. The problem is when I open the lid, I ...
1
vote
0answers
113 views

Battery Threshhold

I recently installed Ubuntu 14.04, which is really nice but my battery is not charging past 59%. I recall tinkering with Lenovo battery management on Windows to reserve the life span but I wiped ...
1
vote
0answers
71 views

Turn off battery control in Ubuntu 12.04

I own a Lenovo Ideapad Yoga 11S that suffered from battery failure when i poured coffee over the keyboard. I have checked the battery voltage manually and it is full. The computer also seem to be ...