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

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1answer
207 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 ...
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0answers
158 views

Acpitool no information

When I run as root acpitool I recieved Battery is not present, bailing out. AC adapter : <info not available> Thermal info : <not available> I can understand why all the ...
2
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2answers
644 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" ...
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0answers
2k 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
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0answers
380 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 ...
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0answers
586 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. ...
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0answers
478 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 ...
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1answer
2k views

Changing systemd HandleLidSwitch setting during run-time?

The setting HandleLidSwitch is defined in /etc/systemd/logind.conf as follows: HandleLidSwitch=<hibernate,ignore,...> The setting is applied successfully on boot. However, I would like to ...
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1answer
765 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 ...
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1answer
98 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, ...
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1answer
2k views

Disabling screen blanking in GNOME 3

We are using a Debian 7 machine with the default GNOME 3 installation to display content on an information display. This display needs to remain on until the connected computer is switched off. ...
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2answers
2k 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 ...
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1answer
29 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 ...
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1answer
18 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 ...
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1answer
782 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 ...
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1answer
130 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 ...
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1answer
120 views

What's the relation betwen ACPI, udev, HAL and pm-utils

I'm trying to figure out how the power management in achieved in Linux (because I want to fix some issues in my laptop). I have found thoughtful documentation about these elements separately. In other ...
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1answer
637 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 ...
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1answer
947 views

Fedora 20 ACPI issues on black screen before log on

I installed Fedora 20 64-bit with the standard Gnome3 desktop environment and while booting a black screen is displayed with 4 messages in the following form: Failed to find handle for ACPI object ...
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1answer
1k views

xfce4-power-manager not updating; ACPI finding an unknown battery but working fine?

I recently upgraded my Asus S56CA Ultrabook and unfortunately my battery indicator in xfce4 stopped working. I am running Debian 8 (Jessie). uname -a gives me this: Linux 3.14-2-amd64 #1 SMP Debian ...
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3answers
691 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. ...
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1answer
664 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 ...
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0answers
8 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 ...
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0answers
79 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 ...
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1answer
58 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 ...
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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 ...
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0answers
74 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? ...
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0answers
55 views

Unable to prevent keypresses from unsuspending laptop

It appears that due to the poor build of my laptop, keys sometimes get pressed in my backpack, even though the lid is closed. This causes it to silently resume from sleep, then overheat and drain the ...
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1answer
304 views

Linux boot hangs: [Firmware bug] ACPI: No _BQC method, cannot determine initial brightness

I have an old Win XP NEC laptop and I tried to boot a live usb with Lubuntu 14.10 to install Lubuntu, but when I tried to boot the live USB, after about a minute the boot process hangs at a line that ...
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1answer
227 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?
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26 views

skip pam_fprintd.so with closed lid

I really love fprintd and I really love having my laptop closed while in docking station. But I hate both together. This is my /etc/pam.d/system-auth: auth sufficient pam_fprintd.so ...
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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 ...
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1answer
762 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 ...
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1answer
1k 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 ...
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0answers
418 views

Cannot control brightness with Fedora 14 on Compaq CQ42

I've done the primary searching of similar questions, Found some, tried the solutions and they didn't work for me. So asking again. All the keys of my Fn combination works except the brightness ones. ...
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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 ...
0
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1answer
79 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. ...
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1answer
553 views

acpid - Hibernate When Unplugged

I'm new to programming for Linux (lubuntu specifically) and I'm working on a project to get an old, discarded laptop up and running the way I want it. I have acpi and acpid installed, and when I run ...
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2answers
103 views

Where to find acpi mailing list?

Was this mailing list dead: Acpi-devel -- Defunct ACPI Development Discussion List What other source can I utilize , just want to find the developers of acpid
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0answers
23 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 ...
0
votes
1answer
359 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 ...
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0answers
72 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] ...
0
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1answer
37 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 ...
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97 views

Thinkpad T440s suspends after some time without any user action

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 ...
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49 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 ...
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0answers
65 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 ...
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0answers
138 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 ...
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0answers
212 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, ...
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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
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1answer
217 views

ACPI – how to select correct LED and LCD module

I'm facing a strange issue. I have ASUS x551ma notebook; As I can get it, after a while (20-30 min) watching LCD, I suffer eye strain. The graphics (video card) seems fine but the LED is micro-shaking ...