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

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Plugged in but not charging Asus laptop

My Asus laptop says plugged in but not charging even after I reset the battery (taking it out, holding the power button for 45 seconds, putting it back in). I have also tried uninstalling Microsoft ...
5
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3answers
4k views

Keyboard doesn't work after Windows resume from sleep (S3) — how to fix?

I have a weird issue with my keyboard after resuming from S3 sleep: I can type perfectly for maybe 5 seconds, but afterwards the keyboard ceases to work until I hibernate or restart (or sleep again -- ...
3
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2answers
2k views

Want to throttle CPU on Windows 7 desktop, but it is ignoring Max CPU setting in Power Options

I want to be able to substantially throttle down the CPU on my desktop, which due to space constraints is in our bedroom and the wife is suspending it each night because of the fan noise. I've tried ...
1
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0answers
18 views

Noisy HP DL360 server and DMESG errors

I purchased a HP ProLiant DL360 server for use with Solaris testing because it was OEM hardware. The server sits in my basement and its kind of noisy. It sounds like a mini high-bypass jet engine, ...
1
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0answers
111 views

What exactly does acpi_backlight=vendor do

I have an issue when booting Linux with a device plugged to USB 3.0. If there is anything plugged (USB stick, keyboard, …), the system hangs on start with blank screen and does not react even on SysRq....
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3answers
715 views

How can I convince Windows 7 to reboot upon hibernating rather than powering down?

I have a Linux and Windows 7 dual-boot setup on my PC and I would like to configure the OSes so that when working in one OS, I can hibernate (saving the state to disk), reboot, use the other OS, ...
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0answers
1k views

How do I understand or interpret the information in an ACPI .asl file?

Dumping the contents of the Windows Registry, located at HKLM\HARDWARE\ACPI\DSDT , I can get the DSDT, which I believe is the Differentiated System Description Table. More information about what a ...
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1answer
146 views

Ubuntu, battery is never fully charged

I installed Ubuntu 16.04 in a Lenovo thinkpad e550 and i have a problem: the battery doesn't charge, the icon on the panel doesn't indicate it's charging, and in "Power Statistics" -> "Laptop Battery" ...
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21 views

Error booting from Ubuntu 15.04 Live USB

I have a brand new Lenovo E460 with Windows 10 on it, I am trying to install Ubuntu Mate 15.04 64 bit using a Usb drive. In my BIOS, I have disabled Secure Boot, set the Boot Mode to Both and enabled ...
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0answers
266 views

ACPI USB Keyboard Power On does not work (asrock z77 extreme4)

I have bios version 2.90 (latest) on an Asrock z77 extreme4 motherboard. In the bios I've enabled under ACPI 'USB Keyboard/Remote Power On' but when the system is powered off, nothing happens when I ...
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1answer
328 views

Power states in Windows

Does anybody know or have a link to documentation on how the Power Manager of Windows, determines to go to the ACPI power states S1-S4? Are there any settings that can be configured? I know that by ...
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1answer
998 views

How to support GNU/Linux on lenovo g470 laptop ? fans, mic, sdcard etc

I recently got a lenovo g470 I use it under GNU/Linux debian and update my notes at : http://rzr.online.fr/q/lenovo Maybe it's a too recent model to get support, but I bet this is also affecting ...
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0answers
22 views

Who wakes processor package from C-state?

There are a lot of strategies to save energy, e. g. Power Management States: P-States, C-States, and Package C-States. Under Linux the modules cpufreq and cpuidle controls the P- and C-state, ...
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1answer
394 views

Blk update request: I/O error . Ubuntu won't boot

When booting Ubuntu, my laptop is first displaying a message "ACPI probe failed" then it starts throwing "Blk update request: I/O error" (see video) Is this the HDD failing?
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4answers
3k views

Is the CPU active in Sleep mode?

Suppose on a Windows OS, you toggle the computer to go into sleep mode and put it away. As far as I know there will no programs or processes will be running. But would the processor still be running ...
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0answers
53 views

ACPI doesn`t work properly?

My PC with next parameters H/W path Device Class Description =================================================== system P5K PRO (To Be Filled By O.E....
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3answers
2k 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 ...
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1answer
2k views

Gigabyte motherboard (890gpa-ud3h) won't shutdown USB power

what the thing the Gigabyte engineers were thinking about their BIOS? How to disable USB being powered while standby/off by button? If I do hard shutdown by button (not related to my another question ...
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2answers
11k 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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0answers
23 views

Zotac Nano uses lots of power while on standby and accesses USB stick - why?

I have a Zotac Nano mini PC with a UEFI firmware here. I have noticed that when on "standby" it consumes a few Watt of power. To illustrate: We start with the power supply disconnected (the power ...
3
votes
2answers
4k views

Windows 10: Laptop display refuses to turn off

System: Clevo P157SM (Sager NP8255-S). I've just upgraded to Windows 10 Pro on my laptop and now the display refuses to turn off even if I lock the session or after the configured timeout (15 minutes ...
3
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1answer
6k views

Unable to install ubuntu - ACPI PCC probe failed

I recently bought a new computer. The first OS I installed was windows 8.1. After that I created a bootable usb drive with ubuntu 14. Unfortunatelly every time i try to boot it and install it i have ...
0
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1answer
58 views

Access xinput from acpi bash script on debian

I'm trying to program a non-working special key on my keyboard using the acpi events, and already got acpi to recognize a keypress and pass it on to a shell script. However, for some reason I cannot ...
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0answers
99 views

keyboard won't wake up computer after sleep for a while, linux

When i put the computer to sleep, i can wake it back up with the keyboard or mouse just fine. until a few hours have passed, then only the power button will work. i'm guessing my keyboard only wakes ...
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0answers
49 views

XP unable to hibernate with system installed on LSI controller?

I'm trying to build a workbench machine that will multi-boot all sorts of OSes, one of which will be XP32, SP3. So first up, please don't tell me how silly it is to be installing this nowadays, ...
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0answers
84 views

systemd WakeSystem timer unsuspends system but doesn't run service

I'm trying to use systemd as an alarm clock (per this guide, but I'll give all the relevant details in this post). The core of the setup is these two files: /etc/systemd/system/goodmorning.timer: [...
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2answers
55 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 ...
2
votes
1answer
707 views

How to install Windows XP directly on a new-ish laptop when it says ACPI is non-compliant?

When I try to install Windows XP (don't ask...) on a new-ish laptop (Lenovo Y410p), its text-mode portion installs correctly, but then when I try to boot it afterwards so that it can continue with the ...
2
votes
1answer
48 views

How to run script every time display is re enabled?

On my linux laptop my screen in flickering due to low PWM duty cycle, I found solution here: https://bbs.archlinux.org/viewtopic.php?id=159817, and wrote script that set PWM to higher value. The ...
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0answers
49 views

Shutting down Windows 8.1 with the power button when locked

I want to be able to have Windows 8.1 shut down unconditionally when the power button is pressed. At present, the power button will shut down the computer in every state I tested, except when I lock ...
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1answer
10k views

BIOS not ACPI compliant, on windows 7 installation

I was facing a problem of blank screen with cursor after login in my Lenovo G40-30 laptop which was pre-installed with windows 8. So to resolve it I somehow decided to change it from UEFI boot to ...
2
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1answer
2k views

Invalid ACPI : Invalid PBLK length [5] during Debian boot

I installed Debian 5.03 Lenny successfully on my machine. I got this error during boot: ACPI : invalid PBLK length [5]. After that the Operating System boots properly and starts normally. What ...
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0answers
23 views

How can I tell my Linux installation to handle the brightness ketys with ACPID?

I want to manually control my brightness keys making a event on /etc/acpi/events. Only that there is a problem, when I press the brightness up/down keys, the brighness changes (I think that the BIOS ...
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1answer
282 views

Windows 2003 Server doesnt start

My pc with W2003 server have this problem: It doesnt start in normal mode, in safe mode it hangs-on the acpitabl.dat. I have tried reset BIOS and disconect all devices, without sucess. I have tried ...
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0answers
777 views

How to change brightness on puppy linux?

I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker,...
5
votes
3answers
7k 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 ...
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0answers
115 views

Hibernation via power button vs Start menu

I had a problem a few years ago with a Mesh Windows XP machine where if I set Windows XP to hibernate via the power button and then regularly shut down with it it appeared to lead to boot problems. At ...
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2answers
665 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. ...
2
votes
1answer
21k views

Unable to install windows 7 on Asus X553M

I bought a new ASUS X553M laptop with DOS pre-installed, I am trying to install windows 7 but getting error "The BIOS in this system is not fully ACPI compliant. STOP : 0x000000A5" Please help.
2
votes
1answer
2k views

Ubuntu 10.04 Keyboard and Mouse Freezing Problem

I had a partition setup with Windows XP and Ubuntu 8.04 dual booting. I recently upgraded to Ubuntu 10.04 by installing fresh from CD but leaving the previous /home folder as is. Things seemed to be ...
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0answers
40 views

Acpi gts parameter

I was wondering if there is a relationship between gts parameter and "suspend to RAM" state. Is it possible, that change settings in /sys/module/acpi/parameters/gts (from 0 to 1) has some effect on ...
0
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1answer
331 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 ...
16
votes
4answers
10k views

What is keeping my PC from sleeping?

How can I find out why my laptop or desktop won't automatically go to sleep
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0answers
136 views

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 ...
0
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1answer
127 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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1answer
2k views

ACPI disabled from BIOS causes a restart loop

I tried to disable the ACPI feature from BIOS, but it seems the machine enters a restart loop after I do that. It always restarts itself right before the system boot begins. Any ideas?
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0answers
423 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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1answer
338 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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0answers
285 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 ...
0
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1answer
194 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 ...