Lenovo T14 AMD wakes up randomly

metabubble · 2020-08-07 14:12:17

I have been experiencing random wakeups from suspend and found my laptop with a drained battery turned off. This happens on 5.7 and 5.8 linux-zen (installed 5.8 from testing to test). Since I have never seen it actually happening (happened at night), I have not been able to collect any logs from a woken up device. However, I found that quite some devices are allowed to wake up the machine.

$ cat /proc/acpi/wakeup
Device	S-state	  Status   Sysfs node
GPP0	  S3	*enabled   pci:0000:00:02.7
RESA	  S3	*enabled   pci:0000:07:00.0
GPP2	  S3	*enabled   pci:0000:00:02.6
GPP4	  S4	*enabled   pci:0000:00:02.4
GPP5	  S3	*enabled   pci:0000:00:02.5
L850	  S3	*disabled  pci:0000:05:00.0
GPP6	  S3	*enabled   pci:0000:00:02.2
GPP7	  S3	*disabled  pci:0000:00:02.3
GP17	  S3	*enabled   pci:0000:00:08.1
XHC0	  S3	*enabled   pci:0000:08:00.3
XHC1	  S3	*enabled   pci:0000:08:00.4
LID	  S4	*enabled   platform:PNP0C0D:00
SLPB	  S3	*enabled   platform:PNP0C0E:00

The platform ones should be enough though, lid and power button are all I need. I tried to mitigate this by adding a udev rule:

$ cat /etc/udev/rules.d/50-disable-device-wakes.rules
ACTION="add", SUBSYSTEM=="pci", ATTR{power/wakeup}="disabled"

but this rule does nothing.

Can someone help me disable wakeup for all pci devices?

Thank you

Last edited by metabubble (2020-08-07 14:17:00)

metabubble · 2020-08-07 16:56:41

I have come up with this file, but is it really the most elegant solution? I'd rather not execute something before every sleep and would love udev to do the job I want it to do

# cat /usr/lib/systemd/system-sleep/disable-wakeup-devices.sh 
#!/bin/sh
case $1/$2 in
  pre/*)
    cat /proc/acpi/wakeup | grep enabled | grep -v platform | cut -f1 | while read line; do echo $line > /proc/acpi/wakeup; done
    ;;
  post/*)
    echo "Waking up from $2..."
    ;;
esac

metabubble · 2020-08-11 06:59:57

This did not help. Laptop still wakes up without opening the lid.

$  cat /sys/devices/platform/thinkpad_acpi/wakeup_reason
0

I can't see why. Does anyone have an idea?

WorMzy · 2020-08-11 08:41:51

Mod note: moving to Laptop Issues.

Arch Linux

#1 2020-08-07 14:12:17

Lenovo T14 AMD wakes up randomly

#2 2020-08-07 16:56:41

Re: Lenovo T14 AMD wakes up randomly

#3 2020-08-11 06:59:57

Re: Lenovo T14 AMD wakes up randomly

#4 2020-08-11 08:41:51

Re: Lenovo T14 AMD wakes up randomly

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