Comment 6 for bug 606579

Lenovo Y550P-4CWI is not available anymore, so I re-verified this issue on another laptop - Acer Aspire 7560G (Radeon HD 6620G+6650M). This time I tested with Kubuntu 18,10 daily image, instead of Kubuntu 17.10.

With Radeon driver digital output is disabled by default, so audio goes to internal audio adapter. Also when I enabled HDMI output manually in System Settings, it priority remain below internal audio adapter which is desired behaviour.

Unfortunately, I can no longer verify if issue is present with nouveau, but let's hope it's fixed there too. For the time being, I close this report.