There is a common problem with those NVIDIA Optimus laptops having an HDMI port connected to the dedicated GPU: NVIDIA audio device is not detected thus no sound goes over HDMI port. For more details see: https://devtalk.nvidia.com/default/topic …

Users of laptops with NVIDIA Optimus are probably aware of some traits of getting it work on Linux: It is properly supported only in proprietary NVIDIA driver which is not shipped by default with the majority of Linux distributions; Until recently there …