Questions tagged [acpi]
ACPI (Advanced Configuration and Power Interface) is a standard for power management.
292 questions
1 vote
0 answers
75 views
System wakes from sleep when freezing user processes
My system was sleeping and resuming just fine, but for a few months, the system wakes itself after going to sleep. I looked with dmidecode at the 'Wake-up Type' and it says PCI PME#. Then I searched a ...
- 465
1 vote
1 answer
100 views
Disable wakeup on plugging in USB-C power
On my Lenovo Thinkpad T14s with AMD CPU, when the machine is suspended, plugging the USB-C power cable in or out causes the machine to wake up. I want to disable that. Some information I think is ...
- 895
1 vote
1 answer
257 views
Unpredictable freezing with Debian 12 on Dell Latitude 7490
I'm having freezing problems with my Debian 12 install on a Dell Latitude 7490 laptop. The screen will freeze and become unresponsive. Moving the mouse during the freeze will cause the keyboard ...
- 11
0 votes
1 answer
306 views
Dell Latitude 5420 S0iX Sleep
I just purchased this laptop used and installed Fedora 42 on it. It’s a Dell Latitude 5420 with an i5-1145G7 processor. The laptop does not support S3 sleep, only s2idle. It successfully enters and ...
0 votes
0 answers
36 views
How to debug which one is causing AE_AML_NO_RETURN_VALUE?
I have a problem with ACPI event in Linux. rtcwake is not working because alarm was not handled by kernel. This is the snippet of dmesg output: [ 1.102322] ACPI Error: Result stack is empty! State=...
- 111
1 vote
0 answers
49 views
System taking more time to resume from S3 sleep
Yocto System taking more time to resume from S3 sleep, it should take 2sec, but taking 12sec: Suspend entry: [ 244.086061] PM: suspend entry (deep) Low-level resume complete: [ 246.900251] Suspend ...
- 11
0 votes
0 answers
36 views
Manjaro (KDE) does not detect unplugging of AC adapter when booted while plugged
This was run while unplugged ➜ ~ upower -i /org/freedesktop/UPower/devices/line_power_AC native-path: AC power supply: yes updated: Sa 10 Mai 2025 11:06:43 CEST (...
0 votes
0 answers
162 views
acpitool -S: solution to problem of a laptop that won't hibernate properly?
I have been struggling for over a month with a new Lenovo Thinkpad P16 Gen2 laptop running Ubuntu 22.04 LTS, that would not successfully suspend. Maybe 90% of the time it worked okay, the other 10% ...
- 539
0 votes
0 answers
123 views
acpitool -W fails to disable the wake-up capability of process labeled PXSX
I am trying to enable hibernation on a laptop because suspend is too undependable. I have gotten the hibernate command to turn the computer off but it starts back up immediately in something like a ...
- 539
0 votes
1 answer
424 views
Arch freezes when watching video: "refused to change power state" in logs
This doesn't happen every time, but sometimes when watching a video, my computer seems to (almost) freeze. The screen changes every few seconds or so. Rebooting fixes the issue until the next time it ...
- 11
0 votes
0 answers
219 views
Suspend issues: laptop lid close wakes up system from suspension (s2idle)
I am currently struggling with an issue on a new Lenovo IdeaPad 9 (AMD) laptop (16AHP9) Problem is that when I suspend the system and then I close the lid, the system wakes up immediately. If I keep ...
- 1
1 vote
1 answer
708 views
Linux Laptop won't hibernate, LVM on LUKS FDE but everything configured OK?
My Linux laptop (openSUSE Tumbleweed) should hibernate but won't and I do not understand why. I have had similar systems (Arch Linux) hibernate under the same circumstances (LVM on LUKS). Here is my ...
- 9,304
0 votes
1 answer
182 views
Cause of abnormal laptop shutdown? Could ACPI Errors cause Overheating?
My well cooled laptop surprisingly shutdown at about 5 am local time, when I was sleeping. If anyone could help me decipher from logs or whatever below, what was the real cause, I would appreciate it ...
- 31.3k
2 votes
0 answers
1k views
Getting into deep S0ix ('modern standby')
I observed that when put into standby mode, my computer (Thinkpad T14 Gen 5 with an Intel(R) Core(TM) Ultra 5 125U, running Fedora 40, kernel-6.10.11) still gets very warm and drains its battery, ...
- 141
0 votes
0 answers
178 views
ACPI error, hub and usb error when installing Ubuntu 22.04 dual boot
I was installing dual boot Ubuntu with Windows 11 on my laptop. In the first time installation, everything was successful, I spared a 256GB space for Ubuntu, booting from USB driver, then select "...
