Questions tagged [acpi]

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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2 answers
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ACPI error on every boot

I recently switched from Windows 10 to Ubuntu. So far so good, but I get these errors on every boot. I was not getting these when on Windows 10 (not sure if it is because Windows didn't have these ...
Mustafa Öncel's user avatar
56 votes
4 answers
238k views

Boot Error - ACPI PCC Probe Failed

ACPI PCC Probe Failed is the error that pops up instead of the default GRUB loader after I updated my kernel to 3.19. I searched around and couldn't find much information except that it is a known ...
Lordbalmon's user avatar
29 votes
2 answers
261k 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 ...
MateoPelOli's user avatar
5 votes
2 answers
5k views

Live USB for installation does not boot, black error screen followed by visual artifacts on a purple screen

I'm trying to install Ubuntu 18.04 desktop with Rufus on a computer with the following specs: CPU: AMD Ryzen 5 2600 MOBO: ASUS Prime B450M-A/CSM RAM: G-Skill Ripjaws DDR4 F4-2400C15D-16GVB GPU: ...
Efefay's user avatar
  • 125
64 votes
3 answers
136k 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 ...
AIB's user avatar
  • 1,431
3 votes
1 answer
4k views

18.04 on MSI GE63 - boot hangs at 'Loading initial ramdisk' without `acpi=off`

I've been trying to get Ubuntu 18.04 LTS running on my new MSI GE63 Raider. I can get into the live USB by passing acpi=off and then running the installer. After that, I install the proprietary nvidia ...
palia5's user avatar
  • 51
28 votes
3 answers
174k views

Booting Ubuntu 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 ...
Filipe Teixeira's user avatar
2 votes
1 answer
1k views

Installation on Acer Swift 5 freezes, no partitions are shown on Installation type screen

I am trying to install Ubuntu 18.04 on a brand new Acer Swift 5 (2019) using a USB flash drive. After the grub menu and the selection of keyboard, WiFi, etc., I get to the Installation type screen of ...
Kostas's user avatar
  • 101
0 votes
2 answers
3k views

How to install ubuntu on MSI GE63 without 'acpi=off'

I tried to install Ubuntu on MSI GE63 Raider 8RF 004cn. But I have to add line 'acpi=off' while installation, the fan spins very fast after I enter Ubuntu. I have searched a lot on the internet but no ...
Zhao Hao's user avatar
8 votes
2 answers
9k views

How to find acpi drivers for specific acpi device / Solving kernel suspend bug

I'm following https://wiki.ubuntu.com/DebuggingKernelSuspend and it says that I have to reboot the system with sudo sh -c "sync && echo 1 > /sys/power/pm_trace && pm-suspend" and ...
Guerlando OCs's user avatar
4 votes
3 answers
3k views

How do I disable the touchpad when the lid is twisted or closed?

I have Lenovo ThinkPad X230 Tablet with Ubuntu 16.04. It has a convertible screen and when it is in tablet mode the touchpad is still active and make a mess. I've created the following script and ...
pa4080's user avatar
  • 29.8k
21 votes
4 answers
48k views

Fan is always on, CPU usage is rather low and can't find the fan or thermal_zone proc files

I have an Asus N76VB notebook with Ubuntu 14.04 and TLP for power managment. However, the fan is always on. It's not really loud, but it's annoying. My CPU usage is around 1-2%. It's clocked at 1.20 ...
Louis Matthijssen's user avatar
0 votes
1 answer
975 views

My cpu slows down after a while and does not recover

Sometimes, and I can't reproduce it (but it happens often enough - a few times a week at least) my cpu slows down below its prescribed minimum. This is an example cpufreq-info output from a minute ago:...
Bach's user avatar
  • 751
32 votes
4 answers
72k views

Ubuntu 22.04 "ACPI BIOS Error (bug): Could not resolve symbol" errors on Asus X705UA

Running Ubuntu 22.04, Kernel 5.15.0-40-generic x86_64 Since the last kernel update about 3 weeks ago, I have started to get the following errors:- I have updated the ASUS laptop with the latest BIOS ...
Gary Wright's user avatar
10 votes
1 answer
14k views

Catch lid close and open events

I tried to write a script like this suggestion: How do I configure the screen to lock when I close the lid? I created a directory and a new script file: mkdir /etc/acpi/local gksudo gedit /etc/...
rubo77's user avatar
  • 32.4k
3 votes
1 answer
5k views

How to switch between options in `/sys/class/backlight` to solve brightness problem?

OS : Ubuntu - 18.04 LTS I have 2 symbolic links in /sys/class/backlight/ directory. acpi_video0 -> ../../devices/pci0000:00/0000:00:01.0/0000:01:00.0/backlight/acpi_video0/ nv_backlight -> ../...
Alanpatchi's user avatar
2 votes
2 answers
3k views

Using acpi_listen command in a shell script

I am on UBuntu 16.04. I have asked a question here regarding headphones plug unplug event. What I tried didn't work. I want to use acpi_listen command to listen to headphones connected event and ...
thewebjackal's user avatar
19 votes
1 answer
131k views

ACPI Errors when booting , Can't boot

I recently installed ubuntu gnome 16.04 LTS in My HP-15AC122TU laptop. I have been using this for a while. I wanted to genarate an xorg.conf file since having a screen-tearing whenever I play movies ...
akza07's user avatar
  • 301
11 votes
2 answers
24k views

AMD Ryzen 5 3600 + Ubuntu 20.04 problems

I have Ryzen 5 3600, Gigabyte X570 GAMING X and Radeon RX 580 Series. I installed Ubuntu 20.04 and it is loaded with kernel parameter 'acpi=off' but now system recognize only 1 core(lspcu, cut /proc/...
Oleg Iskovski's user avatar
6 votes
2 answers
26k 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, ...
user31389's user avatar
  • 598
32 votes
2 answers
89k 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 ...
Stephen RC's user avatar
  • 4,802
16 votes
1 answer
26k views

ACPI Warning Argument #4 type mismatch

Output of dmesg: http://paste.ubuntu.com/23381803/ In the dmesg, there is the below error: ACPI Warning: \_SB_.PCI0.RP01.PXSX._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] ...
Abhishek Bhatia's user avatar
10 votes
5 answers
23k 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 ...
xd1936's user avatar
  • 335
33 votes
4 answers
42k views

How to prevent the Power button to shutdown directly the system?

I did a fresh install of Ubuntu 13.10. When I press my power button, my computer immediately shuts down. In Ubuntu 13.04 I got a nice menu, where I could choose what to do. It is gone now and I want ...
Wauzl's user avatar
  • 1,733
14 votes
6 answers
9k views

Lenovo ThinkPad X1 Yoga OLED Brightness

I'm running 16.04 on my X1 Yoga OLED. I can't change the brightness of the screen at all, it seems to be on maximum brightness all the time. I've tried: Fn+F5/F6 xbacklight -set 50(and 100, and 0, ...
joar's user avatar
  • 567
1 vote
2 answers
1k views

Installation on new laptop DELL Inspiron 5491 freezes

I have a similar laptop to Ubuntu 19.10 installer doesn't start on my Dell Inspiron 5491 But I am opening another question as the problem I face is different. The laptop is quite new and did not ...
Andrea's user avatar
  • 11
1 vote
2 answers
5k 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 ...
R9TySix's user avatar
  • 555
10 votes
1 answer
15k views

Not been able to Shut Down 13.04

After installing Ubuntu 13.04 (not upgrading to it, I did a "clean install" removing the older one), I'm not been able to shutdown the system. After clicking the Shut Down button the desktop ...
Zignd's user avatar
  • 10.8k
4 votes
1 answer
6k views

How do you hibernate on Ubuntu 20.04?

I searched this online but all articles found are outdated. What should I do to enable hibernation in GNOME?
NinePlusTenEqualsTwentyOne's user avatar
7 votes
4 answers
11k 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: ...
Non's user avatar
  • 231
4 votes
3 answers
9k 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 ...
Lasse Espeholt's user avatar
4 votes
2 answers
3k views

Change power button to 'Ask' in Xubuntu 13.10

I have recently installed Xubuntu 13.10 on my Vaio vpcea making me a Linux beginner. The problem is that laptop's power button is right on the edge of the bezel making it far too easy to press ...
Gully.Moy's user avatar
4 votes
1 answer
2k views

How do I sanity check my ACPI tables?

I think there may be a firmware bug relating to ACPI in a laptop. How can I check that my ACPI tables are sane?
Elder Geek's user avatar
4 votes
2 answers
19k views

Can't boot Ubuntu 17.10: [Firmware Bug]: ACPI region does not cover the entire command/response buffer

I can't boot Ubuntu 17.10 [ 7.872529] tmp_crb MFST0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80 ...
denis's user avatar
  • 41
3 votes
2 answers
13k views

BIOS ACPI bug AE_AML_PACKAGE_LIMIT

I've been getting this persistant bug, ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x0000000FF) is beyond end of object (length 0xF) (20200528/exoparg2-393) I've played around with the grub ...
J Nos's user avatar
  • 31
2 votes
1 answer
10k views

Computer won't power off

My computer suddenly won't shutdown or suspend anymore. Disks power down, but the computer won't. I have to shut down the computer by holding the power button. The shutdown process ends with a "...
gabrielfin's user avatar
1 vote
2 answers
7k views

Can't install Ubuntu 20.04 on ASUS Tuf a15 (ACPI?)

TL;DR: Trying Ubuntu from pendrive works just fine. Installing it, don't. getting a black screen or lacking funcionality. I've tried installing ubuntu on my new laptop (Asus tuf A15 with nvidia ...
otrometalero's user avatar
14 votes
5 answers
92k views

Unable to Boot after installation , ACPI errors

I recently tried setting up a dual boot of Ubuntu 18.04 LTS with windows 10 already installed on my Asus VivoBook Pro N580GD. I have tried reinstalling multiple times but every time I get a bunch of ...
Parth Sindhu's user avatar
10 votes
3 answers
15k 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 ...
Rick's user avatar
  • 3,647
10 votes
2 answers
10k 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 ...
Ari B. Friedman's user avatar
9 votes
1 answer
2k 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 /etc/...
hendry's user avatar
  • 630
7 votes
3 answers
11k views

ACPI BIOS Error messages when booting Ubuntu 20.04

After upgrading my ASUS Zenbook UX305UA (Intel i5-6200) from ubuntu 18.04 to 20.04 (20.04.1 LTS to be specific) a couple of weeks ago, I am experiencing odd bugs. While odd green pixels like this were ...
Max's user avatar
  • 143
7 votes
3 answers
31k views

ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GP17.VGA.LCD._BCM.AFN7]

The fault: ACPI: Video Device [VGA1] (multi-head: yes rom: no post: no) ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GP17.VGA.LCD._BCM.AFN7], AE_NOT_FOUND (20190816/psargs-330) ...
Christian Völkel's user avatar
7 votes
3 answers
33k views

ACPI Error: AE_NOT_FOUND when booting after upgrading from 20.04 to 22.04

I upgraded my Ubuntu version from 20.04 to 22.04 (dual boot), and now I get ACPI errors when I boot, but when I load an older kernel version (5.13.0-48-generic), so I only get this errors with the 5....
David's user avatar
  • 71
7 votes
1 answer
10k views

ACPI : EC: Fail in evaluating the _REG object of EC device. Broken bios is suspected

I can't install linux with kernel over than 4.x on my computer. (MSI GP72-6QE-087XFR Leopard Pro) Tried : Ubuntu 15.10, debian 8 and linux mint 17.3. This is saying: "ACPI : EC: Fail in evaluating ...
Yohan Sanchez's user avatar
5 votes
2 answers
12k views

ACPI Errors - Ubuntu 16.04/17.04 can not be installed

I have a problem with installing Ubuntu on my desktop computer. I had Ubuntu 16.04 and Windows 10 dual boot. After one update of Windows, the Ubuntu installation disappeared. I tried to install it ...
Petya Naumova's user avatar
5 votes
1 answer
11k views

Unable To install Ubuntu on MSI Laptop

I have recently bought an MSI PE62 7RD laptop. The problem is that I'm not able to install Ubuntu on my laptop. The installation is freezing during the booting into USB. The culprit for this kind of ...
Sai Chaithanya Adapa's user avatar
5 votes
5 answers
11k 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 ...
Danny's user avatar
  • 151
4 votes
2 answers
3k views

What does "ACPI PPC Probe failed Starting version 219 " mean exactly?

I've recently installed Xubuntu 15.04 on my desktop The video playback was kinda slow and buggy so I installed the nvidia drivers (the gpu is an onboard 7025) As some people, I get the "ACPI PPC ...
Mariano Dirie's user avatar
4 votes
1 answer
7k views

Cannot boot 14.04 Ubuntu

I am new with Ubuntu. My new company gave me a Dell Latitude E5440 laptop running Windows 7 64 bit. I am trying to install Ubuntu but neither 12.04 nor 14.04 boot. The common Error that I take on the ...
Gray's user avatar
  • 41