Advanced Configuration and Power Interface, a standard for power management in operating systems.

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Is Wake On LAN supposed to work even after AC power reset?

So, if you unplug the AC power cable from the wall and re-connect it to the PC Power Supply, is the Wake On Lan functionality still supposed to work on a PC? The WoL functionality is enabled in Bios ...
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1answer
18 views

ACPI, computer turning on sporadically

Lately I've noticed that my GNU/Linux Gentoo desktop computer turns itself on sporadically while it is suspended in ACPI S3 mode. I have made no changes nor updates to the BIOS. In dmesg I see the ...
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1answer
29 views

How id it technically possible for Windows to wake up a hibernated computer?

Windows has many different reasons why it might wake up a system... the biggest that comes to mind is for Windows Update tasks... but my question is how this is even possible when (at least to my ...
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42 views

Archlinux - Battery detected only on AC plug/unplug

I use Archlinux on a new Dell Inspiron 14. I need to plug/unplug the power cord to have the battery detected. For instance, now, the battery icon tells me that no battery is connected and $ ls ...
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37 views

How to rewrite ACPI control tables from Linux?

I have a HP Probook 4720s laptop with broken ACPI tables. The fan is always switched off and the computer tends to overheat and shut down. Under Windows I can use a program called RW_Everything to ...
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1answer
43 views

Change XrandR setup on monitor unplugged/replugged

I'm specifically looking for a way to set up my laptop, when I unplug the external display, to reset the XrandR configuration so I'm only using 1 screen. Any advice? Basically, I want an acpi event ...
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20 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 ...
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1answer
61 views

Why is my computer constantly resuming from sleep?

My recently reformatted Windows 8.1 machine keeps resuming from sleep. This is an acute issue ever since I got my SSD (the reason for the reformat), as Hybrid Sleep is out and the system does true ...
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0answers
443 views

CentOS 6.4, hibernate issue

The problem is, I can't use Hibernate feature. The system allows me to, but just after the power down, the system wakes up. Seems the system is getting wakeup command from somewhere else, USB, PCI... ...
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0answers
86 views

Sudden and spontaneous shutdown when using ACPI

On a Dell Optiplex 755, when I bring the system out from ACPI S3 (suspend) to S0 (normal running mode), the system stays on for perhaps 10 seconds, maybe more. Then it very suddenly shuts the power ...
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1answer
68 views

brightness keyboard dont work nor are recognized

I'm using xubuntu 13.10. When I installed the system the fn keys for brightness worked, but somehow they aren't now. They stopped working with no reason. The problem is that the keys are not even ...
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272 views

Win7: forcing the monitor into power-saving mode from the command line while a fullscreen program is running

I have a system that runs a full-screen program (based on love2d) for long periods of time. I would like to be able to put the monitor into power-saving mode after a certain period of inactivity. ...
3
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1answer
294 views

What does an ACPI BIOS configure during boot?

When a PC boots with an ACPI BIOS, what does it exactly do? I understand that the point of ACPI is to allow the OS to control hardware resources and power management but before the OS is loaded ...
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2answers
407 views

Is it possible to wake up an ACPI S3 suspended Linux System with an SMB packet?

I want to put my Debian NAS system in supend to RAM mode (ACPI S3) after a decent period of time idling in order to save some power. I thought about putting the NIC in a mode, where it waits for ...
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0answers
398 views

/proc/acpi/event not detecting events

My acpid script was not running, so I have attempted to debug it. Running acpi in the foreground with debugging verbosity, I can see that it starts, it reads my rule (1 client rule loaded), and ...
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108 views

Can't control brightness with function keys?

I have Crunchbang installed on my laptop, and I just upgraded it to Testing. Most things are working fine, but my brightness keys no longer work. I can write to ...
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1answer
185 views

s2disk does not power off on Debian with kernel 3.10 on Thinkpad

When I hibernate my Thinkpad T61 with s2disk, it does not power off. The problem occurred after migration to kernel 3.10 (3.2 works fine, 3.11 also broken). Any clue how to fix or at least debug it?
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2answers
300 views

Force shutdown of Windows VM via ACPI or script

At work we've got a Windows Server 2003 VM that we want to shut down when the host operating system (Linux) shuts down. We have this working except for when a user has logged in and locked the screen. ...
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2answers
811 views

Can't boot system without acpi=off

Is there any solution to run fedora 19 on my laptop (Asus x61s) without acpi=off set and removing power management controll? If I remove this option, system hangs just after start booting. I never ...
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0answers
161 views

Need noacpi in CentOS 6.4, not in RHEL 6.4

I've been trying to fix a rather odd problem that I've seen on our new Dell R5500 (Xeon based workstations). We want to run CentOS 6.4 64 bit on them. We did a base install which worked fine, however ...
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2answers
934 views

Difference between software initiated shutdown and using the power button?

It's possible to shut down Windows by software, i.e. by clicking somewhere (Start button/Shutdown), or by using tools like shutdown.exe etc. It's as well possible to shut down Windows by pressing the ...
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1answer
314 views

Why does my DSDT table is different from what I found online?

I have found a field in DSDT table where I want to modify from here http://www.ztex.de/misc/c2ctl.e.html Generally, I want to modify the _PSS field about the processor so that I can have more ...
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2answers
8k views

Disabling System Interrupts in Windows 7 - (high CPU usage, semi solved)

I know the system interrupts topic is pretty common with varying solutions but I had a question about how to implement a solution in Windows 7 the way I did in Ubuntu 12.04. Background: Bought an ...
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1answer
182 views

Disable CPU halt state to prevent BSOD/KSOD

I have recently had problems with my Windows7 desktop bluescreening several times per day (with many different STOP codes) and occasionally blackscreening. Because it is still under manufacturer's ...
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1answer
2k views

System (ACPI.sys) is always using about 15-20% of my CPU

I have a 13" Sony Vaio laptop (model SVS13A1C5E) and I upgraded it to Windows 8 with a fresh install, after upgrading I installed Win8 drivers listed here. Now I have a problem with the CPU usage (it ...
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391 views

High Interrupt DCP processor take

I have a quad core laptop with win7. Around 3 months ago the laptop occasionally slowed down. Resource Monitor and Process Explorer show that processor 0 was 100% busy with DCP and Interrupts. A ...
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1answer
639 views

What is Microsoft ACPI-Compliant System and why are there so many IRQs for it?

I' m a Windows newbie because most of my time I use Linux systems so this question may seem stupid. As far as i know there are only 16 IRQs (0-15) and it is chipset - dependent (APIC controller).But ...
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217 views

I closed the lid and the screen is black (win8)

I have win 8 . And i have closed the lid from power management's or power option I think that was the name from win 8 not bios The lid was his option sleep and change it to do nothing THE power ...
2
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0answers
340 views

Is it possible to install Windows 8 on a non-ACPI computer?

I have a computer with a BIOS that doesn´t support ACPI. I tried to install Windows 8 but the setup said I cannot install Windows 8 without ACPI. After some research I found out that this is since ...
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1answer
193 views

Exit stand-by only when power button is pressed

I was wondering if there is any setting to make my PC exit stand-by only when the power button is pressed on my computer case? My laptop does this out of the box, it won't exit stand-by on any other ...
0
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1answer
302 views

Topic: Load custom DSDT @ windows 7?

I've extracted my BIOS DSDT, disassembled it to ASL, fixed, compiled it back to AML, and how can I make windows to load it instead of my BIOS DSDT? Do I need to write driver or could it be done via ...
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1answer
349 views

Screen stays on when laptop lid shut, running centos 6.3

I'm running Centos 6.3 on a Dell laptop, I'm not running a graphical desktop - just text mode. When I shut the laptop lid the display remains active with the backlight on, whereas I'm expecting it ...
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0answers
287 views

Acer Aspire Laptop won't charge in Windows 7 Home Premium x64

I have an Acer Aspire 7750-6801 laptop running Windows 7 Home Premium 64 bit OS. The issue is that it will only charge sometimes when plugged in. I thought it might be a hardware issue, so I tried ...
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192 views

ACPI events delayed or not logged in Linux

I have a samsung ultrabook (NP530U3C) that is not working good with ACPI events: lot of ACPI events randomly stop to be logged on kernel messages either in acpid logging. the lid closing is ever ...
3
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1answer
388 views

Windows 7 Wakeup from Sleep then Shutdown

Is this caused by low battery? I have an Asus UX31A, and I left it unattended. As usual, in 5 minutes, it went to sleep mode with the lid still open. I came back a couple hours later, and I noticed ...
3
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3answers
618 views

New HP Mini 2140 netbook battery wrongly reports 40% wear after 2 months of usage

I'm using an HP Mini 2140 with Ubuntu 12.04 installed on it. Two months ago, due to the fact that my old battery lasted only for about 20-30 minutes, I bought a new battery, which reported a capacity ...
3
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2answers
4k views

How can I manually control a fan from the terminal?

I'm trying to control the fan speed on my desktop, and I'd appreciate your help. Goal: Use a script to control the fan speed on my computer. Motivation: The embedded BIOS "Smart Fan" settings isn't ...
2
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0answers
616 views

Samsung NP530 CPU stuck at 55 C temperature

I have run into heating issues on my ultrabook running Linux. Idling temperature for Win7 is ~45 C, while in Linux it is ~55 C. Output of sensors rohit@raijin ~ $ sensors acpitz-virtual-0 Adapter: ...
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2answers
512 views

How to sigstop/sigcont processes based on CPU temparature?

I'm temporarily forced to work on a laptop whose fan has failed. Under light load it works fine, but as soon as I start computationally intensive jobs, the temperature raises very significantly, even ...
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2answers
696 views

Auto-start computer from shut down state

Is there any way to start a computer at scheduled time when it is Shut down. I know how to start it when it has been put into Hibernation.
2
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1answer
166 views

Determining Namespaces Not in the ACPI Spec

I am trying to determine how it may be possible to find documentation for namespaces that are not documented in the ACPI spec. I have an Asus uEFI BIOS v(3202) and I'm receiving kernel messages ...
2
votes
1answer
8k views

How do I make ESXi 5.0 to shutdown virtual machines when the physical power button is pushed?

I have a home NAS/DLNA server built out of an HP Micro Server with the HP branded VMware ESXi 5.0.0 build-623860 (free license) installed. Being a home media center I'd like it to be "manageable" by ...
0
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1answer
527 views

How do I pause and restart VirtualBox virtual machines on ACPI suspend?

I use VirtualBox to set up Web developer environments on my laptop. If I suspend the computer and then restart, I'll get very long startup times while VirtualBox spins back up. I have much less of a ...
2
votes
1answer
2k views

Is my computer in ACPI S3 mode?

I recently got a new motherboard for my Intel Core 2 Quad 9300-based PC (the old motherboard was fried). The old motherboard was an ASUS IP35 Pro, while the new one is a Gigabyte G41MT-S2. Since the ...
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0answers
961 views

Linux can't boot without acpi=off on Thinkpad

I recently installed Linux Mint 12 - the Gnome version - on a new Lenovo Thinkpad L520 for a friend. It's running kernel 3.0.0-12- generic. When I booted - either into the live CD, or into the ...
4
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2answers
759 views

Skip all warning prompts on ACPI shutdown?

When I issue an ACPI shutdown command to a Windows XP guest machine from the host VM server, I want Windows to shutdown. The problem is, Windows always wants to ask some question or another, rather ...
2
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1answer
118 views

Estimated power draw for different power states?

What would be a raw estimate of the power draw of a semi-modern desktop PC, in different sleep states? Will the suspended state (with powered RAM) draw much more power then the PC in hibernation ...
4
votes
1answer
697 views

Difference between suspend to “mem” and pm-suspend

What is the difference between echo "mem" > /sys/power/state and pm-suspend Both can put the computer to sleep mode. I want to execute a script automatically when the system resumes from ...
0
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1answer
408 views

Fedora 16 wakes on mouse - how to prevent this?

I have a desktop computer with PS/2 (!) keyboard and mouse, running Fedora 16, just recently installed. It goes to sleep OK, but moving the mouse wakes it up. I'd like moving the mouse not to wake ...
4
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1answer
3k views

Windows 7 does not 'wake up' from Sleep mode

I'm new to Windows 7, so I don't know if this is normal. When the computer is idle for 30 minutes, the screen goes black and no key pressing or mouse movement will bring the computer out of standby. ...