ACPI (Advanced Configuration and Power Interface) is a standard for power management.

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30
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5answers
5k views

How can I detect when a monitor is plugged in or unplugged?

Is there any event that is triggered when I plug in or out an external monitor into the DisplayPort of my laptop? ACPID and UDEV don't react at all. I'm using onboard graphics on an intel chip. Here ...
23
votes
1answer
16k views

How to disable auto suspend when I close laptop lid?

I'm using archlinux. It never auto-suspend before a recent system upgrade(maybe I updated the kernel?). I think it is related to laptop-mode or acpid, so I stop them: /etc/rc.d/laptop-mode stop ...
6
votes
6answers
5k views

How can I improve battery life in Fedora 15?

I am seeing a horrible battery life with Fedora 15 (lovelock) with Gnome Shell 3 on my laptop. I keep the screen brightness, back light pretty low. I still get about 1 hr 50 minutes battery life out ...
6
votes
1answer
374 views

What controls turning off during overheating on Linux

I started experience overheating (I have a few possible troublemakers for it and the cause is separate question) but I wondered what controls handling of overheating? Sometimes my computer: Halts ...
6
votes
2answers
584 views

Information about a laptop fan

Can you help me with finding all the hardware information (parameters) and configuration files about the fan in my laptop? I'm interested of the fan's parameters and configuration files that I can ...
5
votes
1answer
95 views

command to reboot as non-root user

I am using LXDE on Debian. When logged in LXDE as user, I can click on the logout icon in the menu and choose one of the options: shutdown reboot logout suspend But when I type reboot or shutdown ...
5
votes
2answers
2k views

ACPI problem with recent kernels

In recent versions of popular Linux distributions (Ubuntu, Fedora, Mint, Debian) I always have to put acpi=off into the kernel parameter list before I want to boot the computer. This happens to both ...
4
votes
2answers
2k views

How to deliberately activate cooling fan of laptop?

Hi I have a laptop (Fujitsu Siemens Amilo 4000), I'd like to control the cooling fan manually. How do I do that? /proc/acpi/fan/ is empty, the fan is otherwise working well. Distro is Fedora 14.
4
votes
2answers
430 views

help needed to decipher this Acer Aspire 4830TG ACPI code for Nvidia Optimus

I am trying to make sense of the following NVOP Method from the ACPI tables for an Acer Aspire 4830TG with an Nvidia Optimus hybrid graphics system. The NVOP method on top defines a bunch of ...
4
votes
2answers
4k views

Powertop tunables: what does it do?

I just installed Powertop 1.98 on my laptop (T420 + FC15). There is a section called "Tunables". Half of my devices show as Bad. I see I can toggle from Bad to Good? What this section is for? What ...
4
votes
2answers
536 views

Laptop does not power off after it has been suspended to ram

I suspend my laptop using echo mem > /sys/power/state. That works fine and it resumes nicely. Once I try to power it off, it shuts down fine until i see the message Power down. (or similar). ...
3
votes
1answer
1k views

script does not behave properly when called by acpi and udev events

I have the following files in /etc/acpi/events and /etc/udev/rules.d /etc/acpi/events/lidclose # Pass all events to our one handler script event=button/lid action=/etc/acpi/monitors.sh ...
3
votes
1answer
206 views

Why ACPI Namespace keeps changing

Does anyone know why the ACPI namespace keeps changing? I had a script a while back on a Red Hat system which read the CPU temperature from '/proc/acpi/thermal_zone/THRM'. Now I have a new (but ...
3
votes
2answers
585 views

How to control thinkpad_acpi via procfs, RHEL 6.4

I'm having trouble with the thinkpad_acpi module on my Thinkpad T400. While the processor temperature can vary, depending on the CPU activity, from 40 to 85 deg. Celsius, my fan speed remains almost ...
3
votes
1answer
804 views

ACPI conflicts with ACPI region SMRG

During startup, I noticed some error. I found this in dmesg: i801_smbus 0000:00:1f.3: PCI INT B -> GSI 21 (level, low) -> IRQ 21 ACPI: I/O resource 0000:00:1f.3 [0x400-0x41f] conflicts with ...
3
votes
1answer
275 views

Migrating from tp_smapi to 'normal' ACPI support in 2.6.36

I used zen kernel patchset for a long time which included tp_smapi patch. Recently in zen-stable tp_smapi was removed as "We no longer need tp_smapi as of 2.6.36 - the in-kernel thinkpad acpi support ...
3
votes
1answer
98 views

ACPI Errors/Exeptions, why they spam, how to know and fix it?

I've been having these errors pollute my dmesg: [21720.400079] ACPI Error: [\_TZ_.THRM] Namespace lookup failure, AE_NOT_FOUND (20130328/psargs-359) [21720.400093] ACPI Error: Method parse/execution ...
3
votes
1answer
338 views

Suspending laptop fails ~50% of the time

Running ArchLinux and GNOME 3 on a Thinkpad X220. When I suspend my laptop it goes into sleep mode and the LED ring around the power button fades in and out. When a suspend fails, the LED ring and ...
3
votes
1answer
283 views

Have Sun keyboard moon key (116) not shut down my computer

On my Sun keyboard, the top-rightmost key (with a moon image, right above the keypad) shuts down my computer. I'd like it not to, as I hit it by mistake now and then. In /etc/default/keyboard, I only ...
3
votes
1answer
236 views

Issue with laptop screen when opening lid

I use Archlinux, with acpid to configure the laptop lid behavior rather than systemd. Currently, I have it set so vbetool sets dpms off when the lid is closed, and reopening the lid sets it back on. ...
2
votes
2answers
139 views

Why does Linux have poor battery life by default compared to Windows?

Is there something inherent to Linux operating systems that makes them poor managers of battery power by default? I would have thought a light distro like Lubuntu would have a clear battery life ...
2
votes
1answer
94 views

How to check if my battery is healthy?

My Lenovo ThinkPad T61 is rather old, and a couple of years ago I had to replace the battery as the old one was dead. Now the replacement battery seems like dying a slow death, but I get conflicting ...
2
votes
1answer
623 views

Where is the log for ACPI events?

Running Mint 14. Sometimes I can suspend fine, but after my computer is on for a while, it no longer suspends. It wakes up after a second or so without any external inputs. My guess is that I'm ...
2
votes
1answer
238 views

Why does my laptop suspend twice/thrice?

The awesome WM doesn't suspend automatically when closing the lid, so I followed some instructions to get it working. I simply added a file /etc/acpi/local/lid.sh.post with the following contents: ...
2
votes
3answers
6k views

How do I start the fan manually in Linux?

My fan doesn't run in Linux. I'm worried that the laptop might turn off if the temperature gets critically high. I ran the following command: dmesg | grep -I fan This gave me: ACPI: Fan [FAN0] ...
2
votes
2answers
88 views

pidgin-blinklight not working with thinkpad_acpi (T430)

I'm using Ubuntu 13.04 on my ThinkPad T430 and want to use the pidgin-blinklight plugin. The plugin says it needs ibm-acpi, but that's depricated as far as I can tell, and thinkpad_acpi is loaded by ...
2
votes
1answer
98 views

Debug an ACPI resume failure

I have a machine which suspends but does not resume under Linux, but resumes perfectly under Windows 7. When I suspend (be it through pm-suspend or GUI), the suspend goes through, the power LED ...
2
votes
1answer
2k views

Setting default brightness level on startup for all run levels

Laptop: Toshiba R630 OS: Linux Mint 14 Cinnamon I have seen various articles (http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart) on adjusting brightness. But my ...
2
votes
1answer
517 views

Lm-Sensors: Run specific commands when temperature goes above/below limits

I have a pretty badly ventilated computer whose temperature reaches 100ยบ C in some occasions. The poor thing can't be ventilated any better ("put a bigger fan" is not a suitable solution). When the ...
2
votes
1answer
243 views

How to disable wifi and bluetooth keyboard switches in GNOME?

My (capacitive) media keys have recently become autonomous, causing my wifi to switch on and off at random intervals and effectively rendering the machine unusable. How can I disable those keys? My ...
2
votes
1answer
177 views

Fedora 15 address collision on Compaq CQ41?

I keep getting an address collision warning at boot time, between ACPI and Video Rom. If I add acpi=off to grub.conf the error goes away, but then I have no power management (battery icon, proper ...
2
votes
1answer
969 views

eth0 r8169 down on wake up from standby

On waking up after standby the network (eth0) remains down. The eth0 card is r8169. I have tried : ifconfig eth0 up Doesn't work ifconfig eth0 up; dhcpcd eht0 Worked but how do I configure my ...
2
votes
1answer
69 views

How to change Power button shutdown action

I use Mageia ver 4 Linux as server, without X started and without any user login-in during normal operation. This PC has a special card for measuring and control of other devices. This card has its ...
2
votes
1answer
82 views

ACPId suspend-to-ram: can you specify waking up using keyboard events?

This is Gentoo Linux with OpenRC (updated to systemd later on), and ACPI + some power management features in the kernel for Intel. ACPId is up and running. I can suspend to ram using: echo -n "mem" ...
2
votes
0answers
41 views

How do I read an acpidump in OpenBSD?

The acpidump utility used to provide human-readable decoding of the DSDT data, however, it seems like this is no longer available in the recent version of OpenBSD. It looks like the last release with ...
2
votes
1answer
218 views

Why won't this shutdown script work when executed by ACPID?

Based on this thread I modified my /etc/acpi/powerbtn.sh script to account for LXDE sessions: # getXuser gets the X user belonging to the display in $displaynum. # If you want the foreground X user, ...
2
votes
0answers
532 views

How to set up control for case fans in Debian Wheezy?

We'll for some days now I've been trying to get the fancontrol for my Debian Wheezy up and running. Actually (after some problems with pwmconfig not accepting my chipset, which is a AMD 770 one) now ...
2
votes
0answers
213 views

Old HP nc4400 laptop on Debian, fan turns on for 10 secs, then off for 20 secs

I run Debian 7 on an HP nc4400 laptop. This is an old laptop with an Intel Centrino chipset. It runs fine except that the fan turns on for 10 seconds, then off for 20 seconds and then on for 10 ...
2
votes
0answers
298 views

How to use Sony VAIO buttons to lock the screen?

I have a Sony Vaio VPCEG laptop, like this. I'm using Lubuntu 11.10. I'd like to use those 3 buttons (Assist, WEB and VAIO). They work with Windows 7, to recover the system and to open the browser. ...
2
votes
0answers
311 views

acpi_listen returns different result in Ubuntu than Arch Linux

Ubuntu is able to detect my Lenovo "Mic Mute" button with acpi_listen, but when I try it on Arch Linux, there is no output available. Model: Thinkpad X220 4290LY9 Tried to add acpi_osi=Linux in ...
1
vote
1answer
2k views

How do I remove acpi Warning on boot?

I have this message in dmesg log with linux 3.11.6-1 (2013-10-27) (debian version). I wonder how to fix/remove it? [ 5.098132] ACPI Warning: 0x0000000000000428-0x000000000000042f SystemIO ...
1
vote
1answer
231 views

How to read CPU temperature on a shared server?

I would like to read my CPU temperature with PHP, but I cannot find the relevant info. All paths under /proc/acpi/thermal_zone appear empty. I have tried: /proc/acpi/thermal_zone/THM0/temperature ...
1
vote
2answers
135 views

Bash script to adjust brightness when battery unplugged

I am trying to set up my system and to get some practice with scripting and the like. I am running Linux Mint 16 on a Samsung RC520 laptop (Linux 3.11.0-12-generic x86_64). I want to implement a ...
1
vote
2answers
2k views

Arch suspend when I close laptop lid?

I'm in fluxbox on Arch on a Macbook 5,1. New to linux. I'm trying to get Arch to suspend when I close my laptop. Lately I've just been using sudo pm-suspend. I installed slimlock, and inserted ...
1
vote
2answers
4k views

ACPI wakeup from keyboard/mouse via /proc/acpi/wakeup after suspend. How to find the correct device?

I'd like to wakeup my system via keyboard or mouse. This can be done via /proc/acpi/wakeup and a simple echo DEVNAME > /proc/acpi/wakeup my wakeup file looks like this Device S-state ...
1
vote
3answers
55 views

How can one make a laptop remain pingable and continue running its daemons even after the lid is closed?

I'm running Ubuntu 12.04 server on a laptop, and I'm pinging it from another machine. Whenever I close the lid, the pings stop getting responses, and when I open it again, they resume receiving them. ...
1
vote
1answer
392 views

The brightness on my Lenovo SL510 only moves between 100% and 0%?

I have a Lenovo SL510 laptop running Linux Mint Debian Edition (based on Debian Testing) using the Cinnamon DE, and the brightness appears to only have two settings: 100% and 0%. If I use the ...
1
vote
0answers
77 views

Intel Turbo Boost apparently activated for no reason?

The other day, I reinstalled my operating system (Crunchbang, fork of Debian). For some reason my fan has been running at full speed (and blowing colder-than-room-temperature air) even though I'm ...
1
vote
1answer
64 views

Is there any way to get Intel i915 graphics without ACPI?

I've got an old tablet PC that panics on boot with ACPI GPE storms. It boots just fine with acpi=off in the kernel arguments, however I've never been able to get the Intel i915 accelerated graphics ...
1
vote
1answer
486 views

issues booting Ubuntu [Firmware Bug ] : ACPI _BQC method, cannot determine initial brightness

I am running into an issue booting Linux on a new machine. I started with Ubuntu Server edition. I completed the initial setup via an ISO image, however when the machine restarted and went to load ...