You are not logged in.
My PC used to suspend fine. Now it immediately wakes up after a suspend. I have attempted a number of troubleshooting steps and I am in need of help.
It started happening only recently (I do not have a recollection of making a change to cause it).
Arch Linux is the only OS installed on the system. The motherboard is B650I AORUS ULTRA. I tried multiple BIOS versions, but that does not help.
I tried kernels `linux` and `linux-lts` (6.12 and 6.6 respectively), it happens on both.
Removing all USB devices and the ethernet cable does not help. The wifi is off when this happens.
After one of these immediate wakeups I see:
❯ sudo dmidecode
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.7.0 present.
Table at 0x97ABF000.
Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
Vendor: American Megatrends International, LLC.
Version: F33g
Release Date: 12/19/2024
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 32 MB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
5.25"/360 kB floppy services are supported (int 13h)
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Targeted content distribution is supported
UEFI is supported
BIOS Revision: 5.35
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B650I AORUS ULTRA
Version: Default string-CF
Serial Number: Default string
UUID: 03560274-043c-0547-e806-e40700080009
Wake-up Type: Other
SKU Number: Default string
Family: B650 MB
In particular
Wake-up Type: Other
I tried disabling every wakeup trigger in `/proc/acpi/wakeup` and the following commands all confirm that everything is disabled:
awk '/enabled/ {print $1}' /proc/acpi/wakeup | while read -r id; do echo $id > /proc/acpi/wakeup; done; cat /proc/acpi/wakeup
cat /sys/bus/pci/devices/0000\:*/power/wakeup
Nonetheless, the immediate wakeups persist.
Looking at the `active_count` for wakeups, I see
[root@oreo stefan]# awk '$0 != "0" {print FILENAME,$0}' /sys/class/wakeup/wakeup*/active_count
/sys/class/wakeup/wakeup6/active_count 2
[root@oreo stefan]# ls -l /sys/class/wakeup/wakeup6
lrwxrwxrwx 1 root root 0 Jan 8 17:01 /sys/class/wakeup/wakeup6 -> ../../devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:45/wakeup/wakeup6
So now I am wondering what is `LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:45`? Can I disable whatever it is?
This issue seems to be identical to the following old unresolved posts (I tried everything suggested there):
- "Changes to /proc/acpi/wakeup dont have any effect" (2022) https://bbs.archlinux.org/viewtopic.php?id=275798
- "Instant wake from suspend" (2024) https://bbs.archlinux.org/viewtopic.php?id=292798
- "PC immediately wakes up after suspend to RAM" (2022) https://bbs.archlinux.org/viewtopic.php?id=277207
Offline