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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8
votes
3answers
6k views

where did /proc/acpi/battery/BAT0/XXX go in 12.10?

I use some custom scripts that use and monitor the battery information that was in: /proc/acpi/battery/BAT0/(state|info) However, since upgrading to 12.10 I no longer have those files and I've been ...
2
votes
0answers
710 views

Dell Inspiron n5110 syslog ACPI warnings on Ubuntu 13.04

I just installed Ubuntu 13.04 and got a bunch of warnings in syslog: May 9 02:21:34 Dell kernel: [ 9.689651] ACPI Warning: 0x0000000000000428-0x000000000000042f SystemIO conflicts with Region ...
1
vote
0answers
173 views

Ubuntu 12.10 overheating on S46CA

I bought a new notebook ASUS s46ca with Windows 8 preinstaled. And I noticed that the left side from the touchpad gets warm. In windows 8 it does not happen. I think that fan is running faster in ...
0
votes
1answer
625 views

Problems on boot

Good morning! I have a little problem with my Ubuntu 13.04. Actually, I have this problem with any other linux distributive (Fedora, Fuduntu, Mandriva, Ubuntu 11.04 => 13.04, Linux Mint 14 and oth.). ...
0
votes
2answers
417 views

On boot, Ubuntu 13.04 reaches 89º C and shutdown

After install Ubuntu 13.04 my notebook, an inspiron 15R n5010, reaches 89ºC and shutdown. I tried to boot on recovery mode and before shutdown seems to say that "ACPI" gave the order. Somebody knows ...
4
votes
3answers
1k 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 ...
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?
3
votes
1answer
651 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
2answers
3k views

My laptop only boots with the acpi=off parameter. How can I fix this?

I managed to install Ubuntu 12.10 with the option acpi=off, as it didn't work without. Now it boots only with this option. Is it possible to solve the problem for the need of this option? With this ...
2
votes
0answers
134 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 ...
1
vote
1answer
560 views

Terminal check remaining battery health [duplicate]

I've tried the following command cat /proc/acpi/battery/BAT0/info And there it is No such file or directory acpi outputing this: Battery 0: Unknown, 100% Is there another way to check the ...
2
votes
1answer
680 views

Brightness does not change on Asus K55n laptop

I have tried setting different acpi_os, acpi_backlight=vendor, changed the kernel to 3.7.4, and yet nothing happens when I use the FN + F5/F6 keys to change the brightness. KDE recognizes it and will ...
1
vote
0answers
282 views

How does hotkeys, lid close, suspend etc. work with Ubuntu on a newer Thinkpad Laptop?

I am trying to setup my Thinkpad T420 with xmonad as window manager and with as little gnome as possible. If I launch gnome-settings-manager all my hotkeys (disable touchpad, volume up/down, ...
1
vote
1answer
1k views

Where is the ACPI log?

Sometimes my computer shuts down unexpectedly, usually when some process is taxing the CPU. This answer mentions that "when a system shuts down in a normal way, it is either a user with root ...
2
votes
1answer
867 views

I need help with the battery Icon [closed]

I have a Toshiba Satellite L645D running Ubuntu 12.10 and it seems like Ubuntu like some other distros (Nadia, Debian) won't recognize my battery and I don't know the reason for that, it won't show ...
1
vote
1answer
390 views

How do I control the fan when running kernel 3.7?

A while ago I started to use thinkfan to control the fan speed of my lenovo thinkpad. This became necessary as it stoped working after a kernel update (I think it came with the installation of a v3.7 ...
2
votes
1answer
473 views

Ubuntu 12.04 LTS only works when when I replace splash with acpi=off

I'm very new to Ubuntu and this site as well. I've grown up on Windows and felt like trying something new. So here is my problem: I have a DELL Inspiron m5030 that got a virus so i reformatted and ...
1
vote
0answers
23 views

Is it possible to activate irq routing at runtime if it is disabled at boot?

I've had some kind of hardware failure on a laptop that requires me to boot with the kernel parameter acpi=noirq. This turns of my wifi. No good. Is there a way to turn it back on after boot? I tried ...
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, ...
4
votes
3answers
539 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 ...
3
votes
1answer
2k views

Thinkfan on Thinkpad T410 - thinkpad_acpi doesn't seem to support fan_control

I try to run thinkfan. I installed it and configured it. But if i do this i get an error. chris@chris-ThinkPad-T410:~$ sudo thinkfan -n WARNING: Using default temperature inputs in ...
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 ...
0
votes
1answer
391 views

My mouse / keyboard response gets delayed if I don't use it all the time.

Occasionally my mouse / keyboard would take extra long to respond to input. If I moved the mouse or pressed a key it would take an extra second to respond the work normally. If I leave it alone for ...
1
vote
1answer
493 views

acpi_listen only detects every other backlight hotkey press

I am trying to get the LCD backlight brightness control to work properly on my new ASUS G75VW-DH72 laptop in Ubuntu 12.10. I got it to mostly work by following the instructions that I wrote here ...
11
votes
3answers
6k 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 ...
0
votes
0answers
1k views

CPU Frequency Scaling methods *not* working Lubuntu 12.04

I've been trying to get CPU frequency scaling enabled on an old laptop (Celeron 530) running Lubuntu 12.04. I know this works in BIOS because it worked under Vista, and I can just get it working for ...
2
votes
1answer
458 views

Where to download a fixed DSDT?

I have an older PC I'm trying to throw Ubuntu on. It's running an Abit NF M2 Nview and the DSDT is buggy even on the latest bios. Everywhere I look at says to download fixed DSDT's from this site: ...
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 ...
0
votes
1answer
1k views

HP Spectre XT screen dim (completely dark) on boot. Can this be fixed? [duplicate]

When my computer boots up, the LCD backlight is completely blank. I have to increase the brightness using the keys on my keyboard, and only then am I able to see the login screen. I'm not sure how ...
5
votes
1answer
2k views

Brightness control increments brightness by 4 instead of 1

The value of /sys/class/backlight/acpi_video0/brightness increments by four when the brightness controls are used, but I am able to force the value to anything in [0-10]. I have a HP Envy 17-3200. ...
1
vote
1answer
4k views

ACPI _OSC control

I've noticed an error from dmesg output that ubuntu canot enable ASPM: [ 0.192722] pci0000:00: ACPI _OSC support notification failed, disabling PCIe ASPM [ 0.192728] pci0000:00: Unable to ...
1
vote
0answers
452 views

Restart Trouble Ubuntu 12.10

I`ve installed Ubuntu 12.10 on 3 different machines: Acer AspireOne Netbook Lenovo T60 Notebook Desktop - P5P77 - Asus mainboard - I3 - porcessor I have the same issue on all of themm ...
0
votes
2answers
2k views

How do I shutdown 12.10 when ACPI is set to OFF?

I recently installed 12.04 on an HP Spectre XT ultrabook. I installed 12.04 from a USB. When the install was complete, and the computer restarted, I got a blank screen. After some searching, I found ...
2
votes
5answers
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: ...
0
votes
1answer
789 views

Samsung series 5 ultra - suspend on lid closing is disabled by kernel

I have a Samsung series 5 ultra (np530U4c - ivy bridge/Nvidia version). The machine won't suspend on lid closing. I has worked on fresh install. After it I added "pcie_aspm=force ...
0
votes
1answer
333 views

12.04 Install Confusion - Live CD Boots fine, installed system needs acpi=off to boot

New Lenovo Z585 A10 laptop. I can boot the 64 bit Live CD fine - Try Ubuntu - dmesg contains lots of acpi stuff, Suspend is available etc. When I do the install I am unable to boot without ...
0
votes
1answer
1k views

Booting trouble after upgrade to 12.10 on a Dell XPS 15z

Before the upgrade, booting did not work out of the box, but this site told me to put "acpi=noirq" before "quiet splash" in the commands befre startup, and edit /etc/default/grub too. This worked ...
2
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 ...
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 ...
0
votes
1answer
524 views

How to check battery status when acpi is off?

I got acpi turned off with the kernel parameter acpi=off. But now I cannot see my battery state in any way. Is there a way to check battery state when acpi is still off?
0
votes
1answer
2k views

How to set acpi=off for installation? [duplicate]

Possible Duplicate: How do I disable ACPI when booting? I'm trying to install Ubuntu 12.04 LTS 64bit from a USB created in Windows using the recommended software from pendrivelinux. The USB ...
11
votes
2answers
2k views

Does Ubuntu support Core Parking?

Core parking is a new feature that introduced in Windows 7 to get better Battery performance . Depending on the resource use of the operating system it may park one or multiple cores of a multi-core ...
0
votes
1answer
633 views

what is the meaning of `ACPI_OSC request failed`? [duplicate]

Possible Duplicate: error about ACPI _OSC request failed (AE_NOT_FOUND) when i run gksudo xdiagnose and click on view error button, it shows me this error: pci0000:00: ACPI_OSC request ...
3
votes
1answer
6k views

How to monitor laptop temperature? [duplicate]

Possible Duplicate: How do I get the CPU temperature? No ACPI support for my PC, what can I do? After installing lm-sensors and runing sudo sensors-detect i got the message: Sorry, no ...
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 ...
1
vote
2answers
435 views

Ubuntu Logs to Diagnose Hardware Issues [duplicate]

Recently, my laptop has started turning off for no apparent reason; it's an old laptop and the problem is likely to be a hardware issue, but I was wondering if there were any Ubuntu logs that might ...
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 ...
3
votes
1answer
817 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
1k 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
1answer
245 views

My Lenovo W500 resumes from suspend prematurely

In both Ubuntu 10.04 and 12.04, a perfectly happy sleeping laptop is woken when moved. Either the HD-shock detection, the trackpad or a sloppy key will wake it when the lid is closed. To test this I ...