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

learn more… | top users | synonyms

1
vote
1answer
24 views

Booting with acpi_osi=Linux fixes fan control but breaks brightness keys

I am running Debian 8 with the 3.16 kernel on an eeePC 1001P. I have a fair bit of Linux experience but unfortunately this one has me and my google-fu at a loss. Initially almost everything worked ...
1
vote
0answers
12 views

acpi rtc wakeup on battery (Debian testing)

Setting an rtc alarm via /sys/class/rtc/rtc0/wakealarm leads to successful resume from hibernate when this Asus laptop is plugged in, but when on battery it stays powered off (but resuming from ...
1
vote
1answer
3k views

CentOS 7 cpupower not setting the CPU's to maximum

On my machine, i have power savings disable on the BIOS. When I run Ubuntu on this machine, the CPU's are running maximum at 2100 MHz. However, when I'm running CentOS 7, even with the scaling ...
1
vote
1answer
2k 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 ...
3
votes
1answer
17 views

Display and network card not working if booted without a display

I'm facing a kind of a mysterious problem. We have a PC with Debian 8 installed. It boots fine and works well, unless I try to boot it wihout a display. So, I shutdown the PC, unplug display and then ...
4
votes
1answer
85 views

Automatically switch display on lenovo docking and linux

I have a lenovo thinkpad with nvidia optimus and a mini docking station series 3. I want that while docked, it should automatically switch to an external monitor if possible and if I undock it, it ...
2
votes
1answer
29 views

Controlling display backlight manualy

After a fresh new install of Debian, I can't control my displays brightness via the "xbacklight"-tool ("No outputs have backlight property"). While this is curious enough (since their was a time it ...
1
vote
1answer
805 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 ...
0
votes
0answers
47 views

Laptop keeps waking shortly after suspending, kills battery overnight

Fedora 23 with Gnome 3.18. Every 5-20 seconds after suspending, for some reason wakeup is triggered(whether or not the lid is closed.) If the lid is open it turns on the screen and if closed I hear ...
76
votes
2answers
68k 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 /etc/...
3
votes
1answer
26 views

Console keymapping

I have installed Arch Linux on my Thinkpad W530, and none of the Fn-Fx keys or the volume buttons work. However, they do work before I have booted into Arch at the Grub menu. (I can change the ...
1
vote
1answer
49 views

Installing Arch Linux on Thinkpad W530

I am installing Arch Linux on a Thinkpad W530, using the LiveCD. When I boot from the LiveCD, at the Syslinux bootloader screen, my hardware buttons (volume/mute) and Fn-keys work. I am able to ...
1
vote
1answer
29 views

May ACPI wakeup states be modified from the kernel?

Recently I started playing a bit with Wake-on-LAN to make my home setup a little bit more confortable, but in the process I got curious about ACPI configuration. After a quick check, I noticed that ...
1
vote
0answers
102 views

Linux Mint 17.3 and Ubuntu 15.10 Both freeze after USB live boot

After booting into live USB after several seconds everything freezes I can't even open the terminal (CTR+ALT+F1), Looked for a solution and found out that putting acpi=off on the boot menu should make ...
0
votes
0answers
37 views

AE_NOT_FOUND Evaluating _DOD

I have arch linux installed on my Dell inspiron 3543, fwts told me about a message in my kernal log about an acpi ae_not_found exception while evaluating _DOD. It seems that this is related to my ...
1
vote
0answers
11 views

Grub shows Forcepae not found, OS hangs while booting

I just installed LXLE on a computer. In a previous post, I was told how to get Lubuntu to work using Forcepae and acpi_backlight=vendor. Usually those flags are copied when I install, but LXLE didn't ...
0
votes
1answer
697 views

Linux Mint: ACPI PCC probe and usb descriptor errors during boot

I'm getting a lot of errors during bootup on Linux Mint 17.3 Cinnamon 64 bit. For the most time, I've been able to boot (the error messages just flash and disappear) with no problems with my system. A ...
0
votes
1answer
92 views

What's the difference between udev and acpi(d)

They both seem to be receiving & processing kernel events, so why do they both exist? From what I gather, ACPI seems to be more high-level compared to udev, but apart from that can't really tell. ...
4
votes
2answers
8k views

What do the kernel parameters acpi_osi=linux and acpi_backlight=vendor do?

I had troubles with the screen brightness control in my laptop and I fixed it by adding the acpi_osi=linux and acpi_backlight=vendorparameters to the filegrub.cfg. I'd like to know what these ...
2
votes
2answers
668 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" &...
0
votes
0answers
89 views

dynadock - Crashes unexpectedly with “Fixing recursive fault but reboot is needed”

Whenever connected to my dynadock, my notebook (Linux Mint running Ubuntu 14.04.1) has crashed unexpectedly with: And if I press Ctrl+Alt+F8: [drm:intel_set_cpu_fifo_underrun_reporting [i915] *...
1
vote
1answer
69 views

How to find what causes my notebook to crash?

I have a new notebook and it crashes frequently. $ uname -a Linux bpgergo-notebook 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -a No ...
1
vote
0answers
32 views

Why does my Debian desktop no longer power off when told to? [closed]

sudo poweroff and sudo shutdown -h now used to result in my machine entering the shutdown run level and powering down. These days the machine goes through the shutdown procedure but the power is ...
1
vote
1answer
149 views

How to disable suspend on close laptop lid on NixOS?

I'm using NixOS on a laptop and want to disable auto-suspension that happens every time I close the laptop lid. Approach described in “How to disable auto suspend when I close laptop lid?”, that is, ...
3
votes
2answers
2k views

message at shutdown: watchdog did not stop!

At shutdown I often get the message watchdog did not stop! and then the laptop freezes after few other lines without shutting down. Any idea on how to fix this? Recently it happened very often, ...
2
votes
1answer
100 views

Possible race condition when scripting headphone plug-in event

I'm currently trying to script the headphone plug-in/out event. I found out that I can script this quite easily as an acpi event.. I created a file in /etc/acpi/events/ with the event event=jack[ /]...
1
vote
1answer
1k views

Disable GPE ACPI interrupts on boot?

If I look for ACPI interrupts, I find: /sys/firmware/acpi/interrupts/sci: 55414 /sys/firmware/acpi/interrupts/error: 0 /sys/firmware/acpi/interrupts/gpe00: 0 invalid /sys/firmware/...
0
votes
1answer
50 views

linux / SMP — suspend immediately after wakeup from suspend

(Please note -- I read this post and it is not a duplicate.) So for years, my linux laptop has allowed me to both suspend to disk and (with a little effort) suspend to RAM with one of these two ...
5
votes
3answers
4k 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 ...
13
votes
2answers
22k 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 ...
1
vote
1answer
251 views

What does “acpi PNP0501:00: Still not present” mean?

On my new laptop, I have an error in dmesg which occurs every 2 seconds: acpi PNP0501:00: Still not present What does this mean? How to troubleshoot it?
1
vote
1answer
171 views

What do the parts of an acpi event mean?

I have a ThinkPad laptop with dual batteries, and I want to write an indicator app for GNOME which performs an action when the external battery is plugged/unplugged. To read these events I connect to ...
2
votes
2answers
214 views

ACPI wakeup 4-letters code meaning?

I have to disable some event to avoid an immediate wakeup after suspend in my desktop machine, and I made it by trial and error (works well, so that is not a problem). But I wonder... for example in ...
1
vote
0answers
148 views

Thinkpad T440s suspends after some time without any user action [closed]

I'm using a Thinkpad T440s with an Linux Mint 17.2 system. The Thinkpad is docked in a Lenovo Docking station. Today I had for the first time several suspends of my system while working as usual... I ...
0
votes
0answers
55 views

My computer only boots at acpi=off for any linux distro,what should i do?

I think booting with this parameter won't affect my laptop but it disables wifi by hardware switch and may be my laptop will not hibernate. please help me fixing this problem ,I know this is a common ...
3
votes
1answer
4k 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 ...
1
vote
1answer
744 views

acpi_listen: can't open socket /var/run/acpid.socket: No such file or directory

I need to use the acpi_listen command. It wasn't installed so I did: pacman -S acpid Then when I run the command acpi_listen I get: acpi_listen: can't open socket /var/run/acpid.socket: No such ...
2
votes
1answer
126 views

why does Linux only boot on my computer when I add pci=noacpi in grub? Must I replace my laptop? Is it serious enough?

I have tried Ubuntu and Linux Mint and both of them only boot when acpi=off or pci=noacpi. What is this irq and pci scannning ? Someone told me to replace my laptop (it is in warranty period). I am ...
2
votes
2answers
3k views

Graceful shutdown via power button

I want to be able to shutdown my CentOS 7 machine by pressing the power button. Since it doesn't work out of the box, I tried the following: yum -y install acpid service acpid start chkconfig acpid ...
2
votes
1answer
3k 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
223 views

USB keyboard is disconecting automatically (without being unplugged)

In my log, I see following message: kernel: usb 1-1.6: USB disconnect, device number 5 acpid: input device has been disconnected, fd 7 acpid: input device has been disconnected, fd 8 I have not ...
5
votes
1answer
163 views

System does not poweroff - how to diagnose

After upgrading to debian jessie my dated desktop system no longer powers off reliably (/sbin/poweroff - via systemctl on tty1). Instead, it shuts down, pauses and reboots and only powers off if I ...
3
votes
3answers
988 views

Battery full notification

I am using a Linux distribution, I didn't get any notification even after the battery is full. Is there any custom script to run battery charge status and output a sound notification when the ...
0
votes
0answers
76 views

issues with acpi-cpufreq and frequency scaling

I am using the Ubuntu distribution on Intel(R) Core(TM) i7-2760QM CPU @ 2.40GHz with Kernel version: 3.14.5. I deactivated the intel_pstate driver and activated the acpi-cpufreq driver with userspace ...
5
votes
5answers
13k 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] (...
1
vote
0answers
87 views

Suspending fails when a USB mouse is connected

When I try to suspend my Ubuntu 14.04 (with KDE environment) using sudo pm-suspend it fails unless I disconnect USB devices, e.g. USB mice and flash drives. Is there a way to solve this problem?
0
votes
0answers
165 views

Can't adjust screen brightness on ThinkPad W530

I can't adjust screen brightness using keyboard (Fn+F8 and Fn+F9) on ThinkPad W530 when I'm using integrated graphics card. When I switch back (in BIOS) to Discrete graphics card, which is Nvidia ...
0
votes
0answers
235 views

Laptop wireless not working following Linux install

I have an HP ProBook 4740s which came installed with Windows 7. I recently installed Linux Mint 17.2 on the laptop. Im not dual booting, the laptop now only has Mint on it. Since the installation, ...
0
votes
0answers
18 views

How to handle a key which is not detected by ACPI [duplicate]

I have the Asus R556LB laptop. Some functional keys (e.g. the ones for brightness regulation) did not work out of the box, so I visited this page. Unfortunately, the keys I wanted to work are not ...
0
votes
1answer
533 views

Battery indicator problems after installing and uninstalling kubuntu-desktop package on Xubuntu 15.04 x64

A few weeks ago, I decided to get adventurous and install different interfaces on my Lenovo T420 running Xubuntu. I decided to jettison Kubuntu after trying it out (just not my style) and kept Xubuntu ...