# cat /proc/acpi/wakeup
Examples:
EHC1 S3 *enabled pci:0000:00:1d.0
EHC2 S3 *enabled pci:0000:00:1a.0
# echo "EHC1" > /proc/acpi/wakeup
# echo "EHC2" > /proc/acpi/wakeup
Create file like this one:
# nano /etc/tmpfiles.d/ehc1-disable-wake.conf
With lines:
w+ /proc/acpi/wakeup - - - - EHC1
w+ /proc/acpi/wakeup - - - - EHC2
Then reboot and check again -- specified devices will not wake up a machine until you let them again.
You can get around that issue by creating some symbolic links with different names, pointing to the same file:
sudo ln -s /etc/wakeup1 /proc/acpi/wakeup
sudo ln -s /etc/wakeup2 /proc/acpi/wakeup
sudo ln -s /etc/wakeup3 /proc/acpi/wakeup
sudo ln -s /etc/wakeup4 /proc/acpi/wakeup
Then, in /etc/tmpfiles.d:
w /etc/wakeup1 - - - - EHC1
w /etc/wakeup1 - - - - EHC2
w /etc/wakeup1 - - - - IGBE
w /etc/wakeup1 - - - - XHCI
Let me know if this workaround worked for you.
Greetings!
Hi @tcellemail,
I didn't expect that someone will comment after this long time. Thanks!
I don't have that device at the moment but I think this will work.
Thank you for all the hints here.
I decided to disable my devices via /sys/devices/*/*/power/wakeup, since /proc/acpi/wakeup is only a toggle, and I want it to be disabled for sure, also I can then easily specify multiple devices:
e.g. forXHC S3 *disabled pci:0000:00:14.0 the tmpfiles looks like this:
w /sys/devices/pci0000:00/0000:00:14.0/power/wakeup - - - - disabled
Hopefully this is helpful for someone.
Edit: Also be careful with sysfs and tmpfiles, because some devices will be available after tmpfiles is processed
source: https://wiki.archlinux.org/index.php/Systemd#Temporary_files
It is possible to write multiple lines to the same file, either with \n in the argument or using the w+ type on multiple lines (including the first one) for appending
-- https://wiki.archlinux.org/title/Systemd#Temporary_files:~:text=It%20is%20possible,for%20appending%3A
Here's how to do it via sytstemd:
https://unix.stackexchange.com/a/772229/143394
@HaleTom, thanks for the tip! Updated.
It works only for the first line in the config (in your example w /proc/acpi/wakeup - - - - EHC1)
The other files are beeing ignored since they are duplicate path lines. My source: https://lists.freedesktop.org/archives/systemd-devel/2018-May/040718.html
My conf under /etc/tmpfiles.d:
The output im getting at /var/log/messages:
Any idea on how to get tmpfiles to not ignore the lines?
Greetings :)