Questions that relate to the Advanced Configuration and Power Interface (ACPI) specification which provides an open standard for device configuration and power management by the operating system.

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Power Management

I'm running Ubuntu on an Acer Aspire V Nitro - VN7-571G laptop. The battery should last for 8.5 hours with Windows 8.1, but with Ubunt the battery drains in about 3 hours. Acer has no drivers for ...
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14 views

DVD noise on resume & power

I've got a Sony notebook with a slot DVD drive and everytime I boot or resume from suspend the DVD drive makes a noise. Is there a way to tell the DVD drive to not make a noise or just not wake up? ...
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1answer
392 views

Ubuntu 14.10 does not shut down on Acer Extensa 2509 notebook

I am currently running into a problem with my new Acer Extensa 2509 notebook. After installing Ubuntu 14.10 onto the hard drive, I was not able to shut down my live USB drive. After a hard reset, ...
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63 views

If docked during sleep, how can I execute my docked script on wakeup?

Setup: Thinkpad x230 + docking station; Ubuntu 14.04 I use ACPI events to detect if when I dock into my dockingstation and undock. This triggers some xrandr command to setup my external monitors and ...
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55 views

acpid does not trigger Events after booting; manually starting acpid works

I have a Thinkpad X230 with docking station and Ubuntu 14.04 and would like to execute a xrandr script to configure my external 2 monitors when changing from standalone to dockung mode and the other ...
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1answer
1k views

Ubuntu won't shutdown (system halted)

I have an Acer Aspire E1 (ES1-311-P1D5) and I installed Ubuntu 14.10 on it. SecureBoot is enabled. When I try to shutdown the system, it will stop but won't shutdown the computer itself. I've read ...
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2answers
303 views

acpi_listen is not working the way it should

I want to get keymaps of the keys using acpi_listen for some keyboard layout issues. But when i run acpi_listen and press any alphabetical key, it will only display that letter(Suppose I press a it ...
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1answer
110 views

Worrying messages in syslog

I recently installed Ubuntu 14.04. Today, I found some scary looking messages in syslog. I wanted to know if they are a cause for worry. ACPI: Deprecated procfs I/F for battery is loaded, please ...
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0answers
150 views

Strange behavior when closing lid Gateway NE56R

I have a Gateway NE56R laptop running the latest Kubuntu 14.10 x64 beta, although I had this same problem on Trusty. This problem may also affect some Acer Aspire laptops if that helps you fix my ...
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1answer
50 views

How to change drain order of laptop batteries?

I have a laptop with an extra battery. Currently the smaller one in the bay normally reserved for a CD/DVD drive drains first, leaving the main one untouched until the smaller one is totally ...
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0answers
64 views

Power off stuck acer 5560

Hi I have a laptop acer 5560G. apu a6-3400 which works very well with windows. I am making migration to kubuntu 14.04 which I really liked. Congratulations !!. The problem I have is that when you turn ...
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0answers
130 views

Disable keyboard input wake up

I want to disable making my laptop wakes up from suspend on keyboard input. I searched a lot and I disabled all devices in /proc/acpi/wakeup but it still wakes up when clicking any button. I checked ...
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1answer
243 views

High ACPI interrupts counts in brand-new laptop

EDIT: It almost seems like the issue is resolved now(I get 22 interrupts in a 10 seconds interval with video playing in the background). The only difference is that I re-installed Ubuntu, but this ...
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1answer
1k views

Catch lid close and open events

I tried to write a script like this suggestion: How do I configure the screen to lock when I close the lid? I created a directory and a new script file: mkdir /etc/acpi/local gksudo gedit ...
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128 views

All network connections close when laptop lid is closed 14.04

First of all, I'm not the most proficient beaver when it comes to linux in general but I catch on very fast. I'm using the x86 version of Ubuntu 14.04 LTS. I have a Toshiba Satellite L40-14F laptop, ...
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0answers
138 views

peripherals switch off, caused by overheating: ACPI problem

I have an HP Pavilion dm1-4125sa Laptop, 64 Bit with 1.7 GHz AMD Dual-Core E-450 CPU, dual-booted with Windows 7 and Ubuntu 14.04. Often when I am in Ubuntu (only Ubuntu, Windows is fine), when it ...
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1answer
2k views

Trying to run Ubuntu 12.04 or 14.04 with old ATI cards

First, I've tried Ubuntu 12.04, Ubuntu 11.04, Ubuntu 10.04, Xubuntu 11.04, Xubuntu 12.04. Video card is ATI Radeon 9600/9550/X1050 Series. I've done some digging before I decided to ask question ...
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1answer
690 views

Ubuntu 14.04 does not recognize my battery

For the last 3 years I've been using a Samsung notebook. I was using Ubuntu 13.10 until 2 weeks ago. Then I decided to format and install Ubuntu 14.04 LTS. Everything was working great, until the ...
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0answers
754 views

14.04 BIOS, ACPI Errors in dmesg

I recently upgrade from 12.04 x64 to 14.04.1 x64 Dell Latitude Laptop I am seeing messages in dmesg that are causing me concern. The 2 excerpts below are the ones I am most concerned with: [ ...
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0answers
88 views

Gateway ML3109 only boots with “acpi=off”

I have a Gateway ML3109 that I have installed Lubuntu 14.04.1 LTS 64 bit on. I used the alternate installer, and the acpi=off option during the install. My system will only boot with the parameter ...
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0answers
174 views

Ubuntu wakes immediately after suspend with Nouveau on GeForce GT 525M [closed]

I've seen a couple similar questions (1, 2, 3, 4, 5), but neither seems to address my case. When I suspend, after a second, I see a terminal with the word "Nouveau" (implying Nvidia problems?), and ...
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19 views

How does Ubuntu process the press of the power button and other keys presented on the keyboard?

How does Ubuntu process the press of the power button and other keys presented on the keyboard? There are many hot keys on my keyboard: Power Button, Volumn Up, Volumn Down, Mute and so on. How does ...
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3answers
1k views

Lenovo X1 Carbon with Ubuntu 14.04 wakes from suspend by itself after 3 hours

My machine seems to wake up from suspend by itself, at irregular intervals. Causing the power to die out, and machine turn off. It is quite the annoyance, when the machine is in my case and it wakes ...
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1answer
727 views

rtcwake cron does not work

I intend to put my computer to sleep every night and make it wake up again next morning. I found that rtcwake would serve my purpose. However putting it in the crontab does nothing. Following is my ...
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0answers
138 views

Extremely slow ACPI Event Propagation

A follow up to my previous question here: Run a Script when Power Button is Pushed So I am able to detect ACPI events and I intercept the power button press appropriately, however there is an ...
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1answer
2k views

Error: Cannot find backlight controller for radeon acpi graphics card

I get the following message every time I reboot Ubuntu 14.04 LTS: drm: radeon_acpi_init Error: Cannot find a backlight controller What does this mean, and how can I fix it? Many thanks for your ...
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1answer
524 views

ACPI not running custom script on power button press

Any idea how I can debug acpid not starting my custom script on modified xfce4 environment. I've modified "/etc/acpi/events/powerbtn" to point to the correct script: event=button[ /]power ...
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1answer
92 views

What does acpi -t measure?

Whenever I use acpi -t, no matter what I'm doing, the temperature it displays is the same: Thermal 0: ok, 14.0 degrees C So to try and figure out why that is, I go to the man page: acpi Shows ...
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1answer
50 views

How can I log acpi temperatures?

I'm trying to debug why my computer randomly shuts down sometimes, and to rule out temperature issues (since I don't think that's the case) I would like to log the output of acpi -t somewhere so when ...
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1answer
380 views

How to disable the [HP] ACPI button for the wireless card?

I have Ubuntu 14.04 running on a Compaq CQ60 laptop. Ever since I installed Ubuntu (back on 12.04), the "toggle wireless" button next to the power button hard locks the WiFi adapter, causing me to ...
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1answer
318 views

Overheating in an dual-boot system (windows 8+Ubuntu 14.04)

Precisely, I would like to know if booting windows 8 through GRUB can affect in any way the global performance (CPU/GPU benchmarks, cooling efficiency etc...) in both Windows and Ubuntu 14.04 ... I ...
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1answer
451 views

Run a Script when Power Button is Pushed

I'm trying to run a script once I push the power button instead of having my machine turn off. I'm running Ubuntu Server 13.04, but any answers also need to work on Server 14.04. I've looked at ACPI ...
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1answer
216 views

UPower reports Incorrect Capacity

I've just replaced my old Netbook battery with a new one of higher capacity. It was a cheap battery off of Amazon which clearly reads as a 5200mAh battery but Ubuntu reports the battery as being the ...
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2answers
7k views

Fan is always on, CPU usage is rather low and can't find the fan or thermal_zone proc files

I have an Asus N76VB notebook with Ubuntu 14.04 and TLP for power managment. However, the fan is always on. It's not really loud, but it's annoying. My CPU usage is around 1-2%. It's clocked at 1.20 ...
4
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1answer
105 views

Does Ubuntu Phone support RTC Alarm?

Is /sys/class/rtc/rtc0/wakealarm present? Does phone wake up after setting it when it's completely switched off? What does it do when the phone is locked? Will it be supported in hardware by all ...
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2answers
669 views

Ubuntu 14.04 live disk only starts up with acpi=off

I recently tried to run ubuntu 14.04 on a USB drive as I wanted to decide whether it is worth upgrading to(my netbook now has 12.04 on it). However, when I tried to start ubuntu up from the USB ...
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1answer
334 views

VirtualBox Ubuntu 12.04 LTS guest cannot shutdown

I have a virtualbox guest running Ubuntu 12.04 LTS. The host is also an Ubuntu 12.04 LTS. Virtualbox running is version 4.3.10 When I'm running in the guest and click on the shutdown button, nothing ...
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1answer
271 views

Computer reboots instead of shutdown, only after suspend

I have posted seen this on the Ubuntu forums (http://ubuntuforums.org/showthread.php?t=2175057), but its not drawing a solution there so I am posting here. Problem is when I shutdown my computer it ...
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1answer
347 views

How can I prevent anything from happening when I shut the lid of my laptop?

I have a laptop running 12.04 Server Edition, and I'd like to be able to shut the lid without anything happening. I need it to remain pingable and sshable and continue to run all of its daemons and ...
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0answers
141 views

acpi_listen doesn't detect events

I can run acpi_listen, then press all of the function keys (eg Fn+F5 to dim the screen backlight), but no events are reported in acpi_listen. How can I get acpi_listen to report the acpi events that ...
2
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0answers
375 views

How can I disable CPU C2 and C3 states options?

I have a DELL XPS 13 9333. As you can read here, it produces an annoying coil whine under some circumstances: http://en.community.dell.com/support-forums/laptop/f/3518/t/19538215.aspx Someone ...
2
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0answers
217 views

Unexpected Command Completion Code

I am getting the error xhci_hcd 0000:07:00.0 ERROR: unexpected command completion code 0x11 on Ubuntu 13.10. The error occurs when I resume my system from being suspended. It also happens on my tty ...
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0answers
245 views

Module acpi not found

My OS is 12.04, I'm not able to suspend and wake up my PC at given time, or better if I run sudo rtcwake -m mem -s 120 My PC enter suspend mode and the power-on light turns up after 2 minutes, but ...
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1answer
130 views

Which service (ubuntu 13.10) is putting my laptop to sleep when I close the lid?

I run a netinstall of ubuntu 13.10. When I was on 12.10 I had a a sleep.sh script in /etc/acpid that would be invoked by the closelid event in /etc/acpid/events and then basically run pm-suspend. I ...
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1answer
449 views

Why does “echo EHC1 > /proc/acpi/wakeup” change Enabled to Disabled

I have a very basic question. I understand what echo does, and how it directs a string to the file /proc/acpi/wakeup. My question is what is actually happening when I direct the word EHC1 to ...
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0answers
106 views

acpi-support script missing in rc.d

I've just had a look inside the directories /etc/init.d and /etc/rc.d . I have a 13.10 machine, upgraded from 13.04. Then I saw that this link was missing. S99acpi-support -> ...
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1answer
2k views

Ubuntu 13.10 won't suspend

Have been thru several threads with similar issues, but no resolution. ASUS X201E, freshly upgraded to Ubuntu 13.10. Suspend from any menu does not work since upgrade. When I select "Suspend" from the ...
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1answer
2k views

/etc/acpi/powerbtn.sh for full shutdown menu?

I'm having the same problem as 13.10: Power button shuts down directly and Ubuntu 13.10 with Cinnamon Desktop Environment This answer seems to be the way to go, but I don't know what the command is. ...
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1answer
965 views

How to disable powerbutton in 13.10 minimal?

I have my IR receiver connected to the physical power button for turning on and there's a separate remote button for turning off. How to disable the power on button from shutting down the computer? ...
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2answers
2k views

Change power button to 'Ask' in Xubuntu 13.10

I have recently installed Xubuntu 13.10 on my Vaio vpcea making me a Linux beginner. The problem is that laptop's power button is right on the edge of the bezel making it far too easy to press ...