Questions that relate to the Advanced Configuration and Power Interface (ACPI) specification which provides an open standard for device configuration and power management by the operating system.

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0
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3answers
856 views

Power management issues on an Asus N55 [duplicate]

I noticed that with respect to Win7 on my Asus N55 Ubuntu 12.04 tend to overheat the system. After startup the fan controller takes control of the fan, I could here it slowing down, after a few second ...
2
votes
1answer
143 views

Why can't I poweroff my computer if it isn't connected to a power supply?

When my computer is not plugged in the poweroff function doesn't work. It just boots up after poweroff. Whenever I poweroff by the way of GUI clicking or typing command poweroff or halt, my computer ...
8
votes
3answers
33k views

Booting Ubuntu 12.04 with “acpi=off” grub parameter

In order for me to boot into 12.04, I have to add the parameter acpi=off in grub. Any other options as specified here do not allow me to boot into Ubuntu. My question is simple, what does setting ...
3
votes
3answers
2k views

Ubuntu 12.04 strange internal battery capacity error

I recently bought a MSI-X370 laptop with ATI graphics and wiped Windows and replaced with Ubuntu 12.04. Now, up until my upgrade from beta 2 to the first stable Ubuntu 12.04 release, I didn't have ...
1
vote
1answer
320 views

Checking battery status using other that acpi

Is there any way to get the battery status without acpi? I'm using U 11.10 and I needed to install acpi via apt-get. So I guess there's another command that is used to check battery status rather that ...
1
vote
1answer
2k views

Screen turns black after booting, backlight only works in recovery mode on an Acer Aspire 5736z

the screen turns black after booting. you need to use spotlight to see what is what is displayed on the screen but the backlight works on recovery mode. so my question is how can this problem be ...
2
votes
4answers
2k views

Unable to install any version of ubuntu in my laptop

I have MSI -CR400 laptop. Configuration of MSI-CR400 Intel(R) Core(TM)2 Duo CPU T6600 @ 2.2O GHz RAM 4.00 GB VIDEO CARD: NVIDIA GEFORCE 8200M – 512MB [256MB VRAM + 256MB (SYSTEM SHARED)] HARD DRIVE: ...
3
votes
2answers
10k views

No ACPI support for my PC, what can I do?

On my new PC something is wrong with ACPI support under Linux. I have to boot it with acpi=off and nolapic. Also it detects only one CPU core (this annoys me the most) and won't shut down completely, ...
5
votes
1answer
5k views

Using quad core, but only 1 CPU entry in `/proc/cpuinfo`? Is SMP running on my computer?

I just upgraded my system and did a clean install of Ubuntu when I did (Installed Oneiric Ocelot from the CD last week but yesterday upgraded to 12.04 LTS). I have an i7 920 (quad core with ...
3
votes
0answers
2k views

Error: “Fixing recursive fault, but reboot is needed” need to put acpi off

I having trouble with a Acer Aspire 2010. Whenever I boot, just one moment after grub I get the error "Fixing recursive fault, but reboot is needed". So I searched for it, and I found this workaround: ...
3
votes
2answers
1k views

Ubuntu Precise 12.04 and 11.10 do not halt the computer completely, but 10.04 LTS does (Asus P5G41T-M)

I am using an Asus P5G41T-M motherboard with Core 2 Duo E5300. I have tried Ubuntu 12.04 beta 2, the latest daily build of 12.04 and 11.10 (the latest official), both of which act in the following ...
1
vote
1answer
1k views

HP 6735s Brightness hotkey problem; where is brightness panel?

I have installed ubuntu 11.10 on my laptop hp 6735s. The screen is often too dark and i want to make it brighter, although the hotkeys Fn+F7/F8 are not working. I have tried some things: Firstly it ...
3
votes
4answers
2k views

Dell precision M4600 stuck at last stage of reboot

When rebooting the sequence freezes at the very last stage in which it attempts to the the system to reset through ACPI. Setting acpi=off in grub.cfg fixed this problem, but I was unable to suspend, ...
2
votes
3answers
2k views

How to configure motherboard to allow suspension

My computer is unable to suspend/hibernate on Ubuntu 11.10. Some people told me that probable had to do with my bios setting, that I should set my ACPI settings to S3. The problem is that I can't ...
0
votes
1answer
461 views

Installation Problem Error: Kernel_thread_helper

Good afternoon forumer of this great Ubuntu community, I pose my problem to see if I can help find a solution.! My computer a P4 HT 1GB of Ram 160DD My Chipset is intel Start with the live USB and ...
3
votes
1answer
975 views

How do you make the keyboard brightness button adjust at smaller intervals? [duplicate]

Possible Duplicate: How to increase brightness in smaller steps? I have a Lenovo Thinkpad T60 running Oneiric. According to the files in /sys/class/backlight, I should be able to adjust the ...
1
vote
2answers
4k views

Unable to adjust screen brightness on Gateway NV54

i have ubuntu 11.10 installed on gateway nv54. I want to install drivers for video card because the Screen brightness not changing.. But "Additional Drivers" not detecting anything. Graphics: Mobile ...
1
vote
0answers
946 views

Error message “BUG: unable to handle kernel” [closed]

I extracted the .iso onto a disk, and tried to boot from it. For the longest time, it wouldn't even boot, instead, it would bypass it and boot from the hard drive, until I swapped my newer disk drive ...
3
votes
1answer
631 views

If I just use a window manager and not a desktop environment, how do I get automatic dock/undock resolution updates?

Gnome and KDE both change resolutions when I dock/undock my laptop. They seem to do it automatically, more or less, based on the state of the computer. I'd like to have that behavior if I just run ...
1
vote
2answers
2k views

What is temperature limit for Intel i5 processors?

I am using Ubuntu for a quite long time now. I am concern about laptop getting hot. So i would like to know is it safe to have ACPI temperature 90 C ? Or it could damage my laptop ?
0
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3answers
7k views

How do I use acpi_call?

How am I supposed to run/install acpi_call? I've found a similar solution on the linux hybrid graphics blog, but still couldn't manage to run it.
2
votes
0answers
146 views

How to manually power-on the webcam?

I have a Clevo laptop with a built in webcam, on the keyboard there's a helpful Fn+F10 hotkey that seems to power the device on and off. I'd like to have some control over the webcam without needing ...
2
votes
1answer
497 views

Overriding DSDT did it work?

I have compiled a kernel using a custom DSDT file. I just want to make sure the kernel is using it. When I run dmesg |grep DSDT I get this: [ 0.000000] ACPI: Override [DSDT-Notebook], this is ...
2
votes
1answer
2k views

Deciphering hardware damage from sensor info

Recently my system has been suffering from what appear to be numerous hardware defects. Most critically, my system has apparently been overheating (under medium load) and summarily shutting down. ...
1
vote
1answer
214 views

acpi problems make wakeup every midnight

since i installed ubuntu on my Medion Akoya E7214 i have funny problems. It took some time to realize this. With standard settings my computer woke up every midnight. That annoyed a lot. So i searched ...
1
vote
0answers
331 views

Attempting to suspend sometimes results in system lock [closed]

Running 10.10, and in the past suspend has worked 100% of the time. In the past few months, suspend only works roughly half the time. When it doesn't work, it results in me having to do a hard reset. ...
1
vote
0answers
154 views

What can I do to diagnose my ThinkPad R60 locking up when connecting power adaptor? [closed]

I move my laptop between places in my flat quite a bit for this I've got multiple power adaptors connected to outlets in two rooms. Now every now and again (I can't see a pattern) when I move the ...
0
votes
2answers
6k views

HP Pavilion G6 1209 temperature higher than usual and fan working in 11.10

Installing Ubuntu on this new machine i had various problems, so I asked around ask ubuntu for a solution. This is the latest one! :D When I start the pc it shows the temperature around 50-55. When I ...
1
vote
0answers
718 views

ACPI errors with an Asus P8H67-M [closed]

I bought a motherboard ASUS P8H67-M Rev 3.0, and collected a configuration: Motherboard: ASUS P8H67-M Rev 3.0. Processor: Intel Core i7 2600K. Video Card: Nvidia GeForce GTX 470. RAM: 4096 MB. ...
0
votes
2answers
959 views

Brightness doesn't work on an Acer Aspire 4750

I used Ubuntu 11.10 on Acer Aspire 4750 with Intel HD Graphics. When I made it up looks like Linux Mint 12, the graphics card was detected as Intel Sandy Bridge x86/MM2. But I still got problem with ...
0
votes
2answers
1k views

ACPI startup error on ubuntu 11.10 but worked on 11.04

i have looked around quite a bit for an issue like this, but cant find anything. I had Ubuntu 11.04 running on my desktop with no issues. I then formated the drive to install 11.10. I managed to get ...
6
votes
1answer
2k views

Customize the power button action (ubuntu 10.04)

I would like to customize the power button action. The tutorial at http://blog.metalight.dk/2010/07/ubuntu-lucid-custom-power-button-event/ works but not always (the number of shutdown processes can ...
1
vote
2answers
2k views

Dell Dimension 3000 goes into sleep and won't wake up

I installed ubuntu 11.10 on my old desktop Dell Dimension 3000. The installation went well except that I noticed that it installed the OS on the 1T external USB disk. The problem I am seeing is that ...
1
vote
0answers
213 views

When is a Kernel update due for 11.10? [duplicate]

Possible Duplicate: Kernel patch that solves battery issues when for ubuntu ? Thanks to Phoronix there seems to be a fix for the power regression/overheating bug in the Linux Kernel 3.0.1 ...
7
votes
1answer
2k views

Is ACPI useful on a server?

Should I install acpi on ubuntu server? for potential power managing features? I was thinking power down button would be useful for less terminal skilled users who don't know how to connect using SSH ...
2
votes
1answer
4k views

HP Probook 4530s - fans are always on and noisy [closed]

How can I get the fans of my HP Probook 4530s to slow down when the CPU is cool? The following attempts to fix the problem that have been unsuccesful: Fresh install of oneiric I disabled discrete ...
0
votes
2answers
2k views

can i mess up my hardware with acpi=off or acpi=noirq?

Dell XPS 15z Found this: ubuntu hardware support 15z Have been able to get ubuntu booted up off usb with acpi=off. My question is, once Ive installed and my boot line includes either 'acpi=off' or ...
5
votes
2answers
8k views

How can I enable the power button on my server?

The power button on my headless 11.10 server appears to do nothing unless I hold it in for 5 seconds or so, in which case it switches the machine off instantly. What I'd like it to do if I press it ...
5
votes
5answers
7k views

Can't adjust brightness on my MSI VR420 laptop

Using every method possible I'm unable to change my laptop brightness.. It's stuck on super max brightness.. Using the slider in the "screens" window int he control panel doesnt do anything, and using ...
3
votes
3answers
4k views

Sound system is eating away the battery

In my laptop the sound code is running at 100% even when I am not playing anything. It is causing my palm rest to hit significantly. While I do not face the issue on windows machine where I am using ...
1
vote
2answers
2k views

Do I need to add a boot parameter to work around this kernel power bug on a Sony Vaio VPC-EH1S0E?

If i with dmesg | grep -i aspm have this: [ 0.503709] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it [ 0.673564] ACPI _OSC control for PCIe not granted, disabling ...
1
vote
0answers
1k views

Screen brightness stops working after standby? [closed]

So, I just bought a new laptop yesterday (Toshiba Portege R835-P70) with an Intel graphics accelerator and installed Xubuntu 11.04. Everything works fine except after waking from standby. The screen ...
4
votes
3answers
595 views

ACPI 30k+ interrupts per second

My computer is currently doing something like 30k+ interrupts per second. This causes battery issues as well as the CPU being always stuck at the highest speed, making it very hot (overheating.. 75C ...
5
votes
1answer
2k views

How do I enable power management on Ubuntu Server?

I have Ubuntu Server 11.04 installed on an old noisy laptop. Its only purpose is to run subversion and I commit code quite rarely, but the laptop should work all the time. So I would like to know how ...
14
votes
3answers
28k views

What do the different Boot Options mean? (i.e. acpi=off, noapic, nolapic, etc)

I've been having issues installing 11.04 on my new laptop, the solution was to enable any of these boot options: acpi=off noapic nolapic But, what do these options actually do? What sort of ...
7
votes
1answer
2k views

Switcheroo or ACPI call: Which is the better option and what are the differences?

I'm running Natty 64-bit on my Acer TimelineX 3820TG.This notebook has a switchable graphics card (ATI Radeon HD5650 and Intel Chipset). Currently I am not using the fglrx drivers. I am a little ...
7
votes
0answers
3k views

How to make powertop “Device Power Management” suggestion permanent? [duplicate]

When I run powertop on my laptop I get following suggestion: Suggestion: Enable Device Power Management by pressing the P key Doing this results in considerable saving in power usage and I would ...
7
votes
3answers
3k views

ACPI issue, help to fix broken DSDT on an HP Pavilion DV6-6008el

I'm having a hard time fixing the ACPI subsystem of an HP laptop (Pavilion DV6-6008el, Ubuntu Natty 64-bit). I can boot only if acpi=off is specified as kernel parameter in grub, otherwise blank ...
5
votes
3answers
2k views

Automatically start at specific time like BIOS?

Some BIOSes have an option to start the computer from a fully off state (not suspended) at a specific 'alarm' time. Is there any command or way to set this in Ubuntu without restarting and going to ...
1
vote
4answers
2k views

Thinkpad T410 abnormal power consumption and brightness keys behaviour

I've recently installed 11.04 on a fresh Lenovo ThinkPad T410 with a 9-cell battery, but it totally drains up from full battery after about 2:30 - 3:00 hours of normal use (mainly web surfing). The ...