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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1answer
667 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
768 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
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1answer
2k 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
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1answer
498 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
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1answer
442 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 ...
0
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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
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1answer
907 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
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1answer
373 views

Thinkpad W520 brightness modification requires suspend

I have a Lenovo Thinkpad W520 with 12.10 installed on it. The specifics are: Linux corellia 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux It works ...
3
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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 ...
0
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1answer
460 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
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1answer
2k views

Xubuntu 12.10 doesn't save screen brightness on reboot

I have a laptop running Xubuntu 12.10 that doesn't save the brightness setting on reboot. There are some explanations on Ask Ubuntu about how to have a specific brightness be set on reboot, but not ...
2
votes
1answer
517 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: ...
1
vote
1answer
609 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 ...
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 ...
8
votes
3answers
7k 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 ...
5
votes
1answer
3k 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. ...
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
1answer
723 views

Suspend on power button when session is locked

Is it possible to configure Ubuntu so that the power button causes suspend regardless of whether the session is locked or not? See here, for example. That configuration does not work, however, if the ...
0
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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 ...
1
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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
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1answer
868 views

Is there a program to charge/discharge the battery automatically without the need to unplug the ac adapter everytime?

I want to give some life to my old laptop, and recalibrate the battery (old now). When reading around on forums, the common info is to turn on the PC, drain the batt, even from Bios, and then recharge ...
0
votes
1answer
890 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
363 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 ...
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2answers
2k views

Note book is getting very hot when using Ubuntu 12.04

I have bought a Toshiba satellite Pro L850 note book. It already has preinstalled windows 7 professional. I have installed Ubuntu 12.04 and now my note book have two Operating systems. The problem is, ...
6
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1answer
597 views

How do I prevent immediate wake up from suspend (version II)?

This question covers one reason a computer might immediately wake after suspend: How do I prevent immediate wake up from suspend? I seem to have a different one. After a recent security patch update ...
2
votes
1answer
3k views

Lubuntu Precise - Power button doesn't shutdown immediately anymore

After some upgrade, my headless lubuntu 12.04 stopped shutting down on power button press. I tried to edit ~/.config/openbox/lubuntu-rc.xml without success. Nowhere docs on possible alternative to ...
0
votes
1answer
665 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
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1answer
714 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
7k 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 ...
1
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2answers
592 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 ...
0
votes
0answers
2k 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 ...
4
votes
3answers
4k views

How to enable hard-blocked bluetooth in Thinkpad Edge 320

I'm trying to use the built-in bluetooth device of my Lenovo Thinkpad E320. It seems to be hard blocked, but i can't find any possibility to unblock it. rfkill list returns: 0: tpacpi_bluetooth_sw: ...
1
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1answer
287 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 ...
0
votes
2answers
775 views

Backlight settings not stored

Recently bought a new laptop (Samsung 700Z) and installed ubuntu 12.04. Most stuff works out of the box, but some details are driving me crazy. I installed the fglrx driver to shut down the fans and ...
0
votes
1answer
140 views

How do I resume my session?

I have a desktop computer running Ubuntu, which is a very powerful system and I don't want it on all the time, so I would like to use the Suspend feature, but there is one problem: My computer won't ...
1
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2answers
2k views

Ubuntu 12.04 halt/poweroff trouble

I successfully installed Ubuntu Server 12.04 32-bit on a HP Proliant Microserver, everything works perfectly but when I try to turn off the machine with the command halt or poweroff hangs after ...
2
votes
2answers
30k views

How do I disable ACPI when booting?

When I tried to install Ubuntu from the live CD start menu, the screen became black with just a blinking cursor. I rebooted the PC and I chose the option acpi=off. Then the installer started and ...
1
vote
1answer
1k views

help with fixing fwts errors log [closed]

Here is an extract of results.log: MTRR validation. Test 1 of 3: Validate the kernel MTRR IOMEM setup. FAILED [MEDIUM] MTRRIncorrectAttr: Test 1, Memory range 0xc0000000 to 0xdfffffff (PCI Bus ...
0
votes
1answer
378 views

ACPI error: Laptop cannot hibernate

Hibernate does not work on my Lenovo W520 laptop. The computer freezes with the error message [ 6218.321519] ACPI: Unable to dock! The number in the square brackets can be different each time. The ...
0
votes
1answer
720 views

Computer is randomly shutting down. What could be?

I'm having some problems, my computer is shutting down at random intervals, but from today it started to shut off rigth after the login screen. It's a Toshiba Laptop. I thought it was the cpu ...
4
votes
1answer
2k views

Is an ACPI GPE storm normal in an Ubuntu session?

In a previous question (What is an ACPI GPE storm?), I asked about ACPI GPE storm. Looking closer to my kern.log file in /var/log/, I notice that in every session at some point (usually withing 20' ...
5
votes
1answer
3k views

What is an ACPI GPE storm?

Just experienced a system freeze (no touchpad, no keyboard, screen looked normal), Alt/SysRq/REISUB didn't work, had to press the start button. In var/log/kern.log I find "ACPI: EC: GPE storm ...
0
votes
3answers
845 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
142 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
32k 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
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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 ...