systemd version the issue has been seen with

242

Used distribution

Ubuntu 19.10

Expected behaviour you didn't see

After systemd-inhibit terminates system should be allowed to go to sleep. If the autosuspend timeout is already reached when systemd-inhibit terminates I would expect it to suspend immediately.

Unexpected behaviour you saw

If systemd-inhibit is allowed to run longer than the autosuspend timeout, the system will not automatically suspend even after systemd-inhibit terminates. Autosuspend works correctly if systemd-inhibit terminates before the autosuspend takes place. The system will also autosuspend after systemd-inhibit has terminated if I move the mouse or otherwise cause the screen to turn on, and then leave it sitting idle again for the full autosuspend timeout.

Steps to reproduce the problem

1. Start a long running command with systemd-inhibit like so: systemd-inhibit sleep SOME_NUMBER_GREATER_THAN_AUTOSUSPEND_TIMEOUT.
2. Wait for the command to terminate.
3. Watch as the system stays on and doesn't suspend even if left idle for a long time after systemd-inhibit terminates.