Audio over HDMI / DisplayPort
How it tests
Right after the external display test, reads the monitor's ELD, plays beeps to the HDMI/DP device whose jack says plugged (or to all of them when none says) and asks for the count.
How it decides
Supported: valid ELD and right count. Partial: right count, no ELD. Failed: nothing heard or no HDMI/DP device. Uncertain: the count missed twice.
How sure it is
You answer a challenge, and the check of the monitor's audio data (ELD) mirrors what PipeWire needs.
What could mislead it
- Could fail when it shouldn'tA monitor's speakers are muted or off, so the tester hears nothing.