I want to use my HP Pavilion 23xi monitor as an external monitor for my laptop (Sony Vaio, Windows 7). The laptop only has an HDMI connection, so I used an HDMI cable to connect it. The HP monitor works fine, but when it is connected, it cuts off all audio output on the laptop. There is no sound from the internal speaker on the laptop, or from the headphone connection.
If the HDMI connection automatically takes over the audio output, surely there should be at least a headphone socket on the PC? I can't change the connection type, as the laptop only has HDMI for an external monitor. Is there any configuration change that will fix this?