I worked on a ardour project, when my friend rang on the door, asked me to go for a walk. I stopped the work on my project but left it and Ardour open.
When I came back 2 hours later I had no more sound in this project. (All other projects have still sound) My computer has of course in the meantime gone to suspend mode (Linux Manjaro) so I woke it up as usual. But suddenly the Ardour-project I left just two hours before had no more sound. It played fine but without any sound. I pressed some solo-buttons and some mute buttons, but there was no more sound at all.
So I restarted Ardour with the plugins switched off. No sound. I changed the Audio/Midi-Adjustments to ALSA/JACK - INTERNAL/EXTERNAL DEVICE - all possible combinations. - No sound. I rebooted the computer. No luck. All meters are working, but I have no sound in this one project. Whatever I tried: I can not seem to hear the music in this project. No problem with the sound in other Ardou-projects.
What can I do to find out where the problem is? Or am I ignoring something simple?
These screenshots show how my project looks during playback. Can I provide more information to find the sound for that project again?