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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1
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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
604 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
29k 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
864 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
857 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
4k 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 ...
32
votes
3answers
52k 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
11k 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 ...
1
vote
0answers
260 views

Creating basic ACPI event makes the system unusably slow [closed]

I want to change a few settings on my laptop when I switch to battery power. I created a new event in /etc/acpi/events/cust-battery and it looks like this: event=battery action=/home/skerit/power.sh ...
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
4k 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
575 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
424 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
964 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
715 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 ...
11
votes
3answers
7k 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 ...
3
votes
3answers
4k 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
5k 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
6k 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
2k 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
677 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 ...
0
votes
1answer
1k views

How to stop acpid restarting /etc/acpi/lid.sh restart unnecessarily? [closed]

On my Acer Aspire One netbook, I have noticed that acpid starts /etc/acpi/lid.sh multiple times a minute. This script should only be started when the lid is closed or opened. How can I stop theses ...
6
votes
3answers
8k views

How to shutdown the computer when hitting the Power button?

I have a Xubuntu Lucid 10.04 computer plugged in to my TV. I use the command line to administrate it. Right now when I hit the power button it just opens a Logout screen. How can I set it up so that ...