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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3
votes
0answers
169 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
540 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. ...
2
votes
1answer
230 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 ...
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 ...
0
votes
2answers
1k 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
5k 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
3k 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
9k 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 ...
4
votes
3answers
5k 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 ...
4
votes
3answers
676 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 ...
6
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 ...
15
votes
2answers
40k 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 ...
3
votes
1answer
3k views

Help to fix acpi on my HP Pavilion DV6-6008el

Update: further details related to the issue in this other question. I'm able to boot my laptop only adding acpi=off as kernel parameter in grub configuration file. Without this parameter the system ...
3
votes
1answer
896 views

Cannot get temperatures in Dell Studio 1558

I could never get proper temperatures on my Dell Studio 1558. lm-sensors and acpi give wrong readings. The output of sensors is, $ sensors acpitz-virtual-0 Adapter: Virtual device temp1: ...
3
votes
1answer
4k views

Modify manually PWM of my fan (fan speed)

I configured fanspeed but it detects only one "temp" captor... In Gnome Sensors applet, I can see the temperature of three captors... The one of my GPU is 75°, 62° for my hard disk and 32° for my ...
3
votes
2answers
1k views

Battery not recognized on my laptop (and it recognizes my laptop as a desktop)

I have installed Ubuntu (both 10.10 and 11.04 pre-release) on my laptop but my battery is not recognized and it is detected as a desktop system rather than a laptop. I have tried to get the output ...
1
vote
1answer
920 views

Dell Vostro 3400 reboots instead of shutting down

Well the title says it all. After the GUI button of shutdown responded to reboot. I have tried all the command there is but every time I shut down my laptop it reboots. I tried sudo halt sudo ...
3
votes
2answers
5k views

HP ProBook 4720s - Fans running constantly at full

I was given a HP Probook 4720s as a work laptop, over the last 2 years I've predominantly used Ubuntu as my OS for work and home, but recently have needed to use Windows 7 as it controls the fans ...
34
votes
3answers
63k views

What does the kernel boot parameter “set acpi_osi=Linux” do?

I am facing an issue with brightness control in my laptop which has Intel HD graphics and Ubuntu 10.10 64-bit. So when I searched for a fix I found that a common suggestion is to edit the GRUB file ...
2
votes
1answer
3k views

ACPI shutdown not working from VirtualBox

I have several Ubuntu 10.10 (Maverick Meerkat) servers running in VirtualBox 4.0.4 (however this issue was also present in VirtualBox 3.2.8). When I issue an ACPI shutdown to the VMs, nothing happens. ...
6
votes
3answers
14k views

Brand new battery is 100% charged but at 0% capacity

I just bought a brand new battery to replace one that had seemingly died. I followed the instructions that came with the battery and charged it overnight, then ran my computer on battery until it was ...
3
votes
3answers
2k views

I cannot adjust the brightness of my Acer Travelmate 4740 laptop

I cannot adjust my laptop's brightness. What can I do?
4
votes
2answers
5k views

What is the impact of the nolapic parameter on a multiprocessor laptop?

I have an Asus X71SL with an Intel Dual Core T3200 processor. Any kernel version after 2.6.35-rc2 won't boot up on my machine without the nolapic kernel parameter at bootup. I have already reported ...
6
votes
1answer
602 views

Laptop resumes from suspend while lid is closed [closed]

I have a Dell Studio 15 and I am running Ubuntu 10.10. When I close my lid or select the suspend option, the machine suspends as indicated by the slowly pulsing power indicator. I'll put the machine ...
4
votes
1answer
1k views

MSI U130 freezes on shutdown

The computer freezes when i shutdown. I have tried the acpi options acpi=off and acpi=force but they don't work. The computer is a MSI U130. The only way to shutdown is by long pressing the power ...
3
votes
3answers
3k views

Fan making noise while running ubuntu

Hi i have a newly installed version of ubuntu 10.10 on my laptop. When i run windows, the fan is working properly and is not making sound. but when i run ubuntu, its making sound and is runnning more ...
2
votes
1answer
2k views

wakeonlan from remote host

I have setup wake on lan service on my server. Everything works fine on local area network: root@server$: poweroff user@local$ wakeonlan AA:BB:CC:DD:EE:FF and the server wakes up. ...
1
vote
2answers
466 views

No sound when monitor is turned off

I'm running Ubuntu 10.10 on a Revo r3610 nettop with integrated sound (Intel HDA) and graphics (nVidia ION). When I boot up with the monitor turned on everything works fine. If I then turn off the ...
2
votes
1answer
986 views

Asus EEE 1005HAB fan always running

I recently installed 10.10 on an EEE 1005HAB netbook and the fan is always running pretty loud. I am not too familiar with the ACPI stuff, so I couldn't seem to get it fixed. I do remember having this ...
2
votes
1answer
741 views

How to get ACPI health data on a Gigabyte GA-890GPA-UD3H?

I have a Gigabyte GA-890GPA-UD3H motherboard and Phenom II X6 in my desktop computer, and it's all working well, except that Ubuntu 10.10 doesn't seem to detect any ACPI support at all: it can't ...
12
votes
3answers
8k views

How do I configure WakeOnUSB properly?

How do I configure Wake-On-USB properly on a 10.04 or 10.10 Ubuntu (2.6.36 and higher if needed)? (Wake-on-USB is when the computer is asleep and for example a USB Keyboard event wakes up the ...
4
votes
3answers
5k views

“On battery” is not recognized

I have just bought a lovely ThinkPad Edge 11 which have ~6 hours of surfing in Windows 7. But unfortunately, a clean Ubuntu 10.10 give me max 4 hours which is not satisfactorily. Therefore I have ...
8
votes
1answer
1k views

How does my computer suspend?

Trying to understand how suspend works in 10.10. http://git.webconverger.org/?p=home.git;a=blob;f=.bashrc;h=8ba57b877e31a03c5f0b1675b42f747d81dd31ad;hb=HEAD#l31 I use an alias suspend='sudo ...
6
votes
5answers
6k views

Battery indicator is stuck on “estimating”?

After installing Ubuntu 10.10, the battery indicator worked fine (both percent remaining and estimation on time). I then installed and configured some software (Skype, Pidgin, Thunderbird, removed ...
4
votes
2answers
7k views

Boot with “noacpi” automatically from hard drive?

If I boot ubuntu from the live cd without any special options I get the following message: [ 0.040001] Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic=debug and send a ...
3
votes
3answers
3k views

Setup suspend-on-lid-close/Fn+F4 outside of KDE/Gnome?

On current Ubuntu (10.04) suspend-on-lid/FN + F4 only works if some powermanagement-applet of KDE/gnome is running. But what about suspend-to-lid if you are working on the console or using a ...
3
votes
1answer
697 views

Hibernate on Dell Inspiron 1525

I'm ahving a Dell Inspiron 1525. I installed there a stock Ubuntu 10. However I can see no "hibernate" item in the shutdown menu. Is ACPI supported on 1525? If it is, how can I make hibernate work ...