Recently installed FreeBSD 15 on a Dell Latitude 5490. S3 is supported but it's not an option from KDE Plasma as a power button action. I would assume this is due to permissions. Naturally,
acpiconf -s 3 fails if not root.
I've seen suggestions elsewhere to use sudo, allowing this command to...
Command used:
acpiconf -s 3
The callback function in the driver is invoked as expected. However, free IRQ vector is failing with the following message and ending with a reboot.
freebsd-version
12.1-RELEASE
$ sysctl hw.acpi.supported_sleep_state
hw.acpi.supported_sleep_state: S3 S4 S5
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