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Questions tagged [acpi]

ACPI (Advanced Configuration and Power Interface) is a standard for power management.

274 questions
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How to disable auto suspend when I close laptop lid?

I'm using archlinux. It never auto-suspend before a recent system upgrade(maybe I updated the kernel?). I think it is related to laptop-mode or acpid, so I stop them: /etc/rc.d/laptop-mode stop /etc/rc.d/acpid stop I also edit…
heiz
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8 answers

How can I detect when a monitor is plugged in or unplugged?

Is there any event that is triggered when I plug in or out an external monitor into the DisplayPort of my laptop? ACPID and UDEV don't react at all. I'm using onboard graphics on an intel chip. Here is a similar discussion which is already a couple…
janoliver
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51
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4 answers

ACPI wakeup 4-letters code meaning?

I have to disable some event to avoid an immediate wakeup after suspend in my desktop machine, and I made it by trial and error (works well, so that is not a problem). But I wonder... for example in my laptop I have a long list in…
Rmano
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2 answers

What do the kernel parameters acpi_osi=linux and acpi_backlight=vendor do?

I had troubles with the screen brightness control in my laptop and I fixed it by adding the acpi_osi=linux and acpi_backlight=vendorparameters to the filegrub.cfg. I'd like to know what these parameters mean and why they work.
user91655
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32
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3 answers

message at shutdown: watchdog did not stop!

At shutdown I often get the message watchdog did not stop! and then the laptop freezes after few other lines without shutting down. Any idea on how to fix this? Recently it happened very often, usually when the laptop was powered on for some…
Reyx_0
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30
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4 answers

How to check if my battery is healthy?

My Lenovo ThinkPad T61 is rather old, and a couple of years ago I had to replace the battery as the old one was dead. Now the replacement battery seems like dying a slow death, but I get conflicting data from xfce4-power-manager. So I'm wondering if…
landroni
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28
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1 answer

How do I remove acpi Warning on boot?

I have this message in dmesg log with linux 3.11.6-1 (2013-10-27) (debian version). I wonder how to fix/remove it? [ 5.098132] ACPI Warning: 0x0000000000000428-0x000000000000042f SystemIO conflicts with Region \PMIO 1…
ppr
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28
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2 answers

Why does Linux have poor battery life by default compared to Windows?

Is there something inherent to Linux operating systems that makes them poor managers of battery power by default? I would have thought a light distro like Lubuntu would have a clear battery life advantage over Windows, yet this doesn't seem to be…
decvalts
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22
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3 answers

ACPI BIOS Error / AE_NOT_FOUND

I'm getting these error messages every single time I reboot my desktop (and a couple of more I don't know how to retain when it's shutting down, but those are not relevant to this question so far): [gorre@uplink ~]$ journalctl -p err..alert ... --…
x80486
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15
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1 answer

Guide on how to enable hibernation on Linux Mint 20 Cinnamon (Ubuntu 20) and prevent unwanted wakeups

How can I enable hibernation on Linux Mint 20 Cinnamon (Ubuntu 20) and prevent unwanted wakeups?
Texno
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6 answers

Disable GPE ACPI interrupts on boot?

If I look for ACPI interrupts, I find: /sys/firmware/acpi/interrupts/sci: 55414 /sys/firmware/acpi/interrupts/error: 0 /sys/firmware/acpi/interrupts/gpe00: 0 invalid /sys/firmware/acpi/interrupts/gpe01: 0 …
Naftuli Kay
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13
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3 answers

ACPI region does not cover the entire command/response buffer

I'm experiencing system freezes and looking in the journal I see kernel (4.14.15-1-MANJARO) errors such as: kernel: tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags…
Tom Hale
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13
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2 answers

Immediate wake-up after suspend

My Debian 9 system wakes up in 2-5 seconds after it enters into the sleep mode (suspend to RAM) manually or automatically. The problem always occurs no matter how the sleep mode is invoked: by lid closing, by power button, or from terminal. What…
kmotoko
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1 answer

ACPI group/action undefined: processor / LNXCPU

If I unplug my laptop from the AC adapter, I will get ACPI errors like these: May 07 21:45:04 veritas root[7067]: ACPI group/action undefined: processor / LNXCPU:00 May 07 21:45:04 veritas root[7076]: ACPI group/action undefined: processor /…
Mike Manilone
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13
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1 answer

ACPI Exception: AE_NOT_FOUND infinitely on startup

I just did a system update and upgrade on my Arch desktop. Just after getting past GRUB, I get this scrolling on the screen forever: ACPI Exception: AE_NOT_FOUND, while evaluating GPE method [_L6F]... ACPI Error: [PGRT]_Namespace lookup failure,…
ZuluDeltaNiner
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