After the laptop is
connected to the TP3206 through the VGA cable (the terminal is TE80), the video
is played on the laptop and there is no sound on the computer.
1. The laptop is connected to the display through a VGA cable. The
sound can be played normally, indicating that the laptop hardware and
configuration are correct.
2. Replace the laptop brand. It is found that only some models have
this problem. HP840G2 will encounter this problem while Lenovo T460 and DELL
E7250 do not have this problem.
3. Check the laptop speaker settings and find that there is one more
player is enabled. Disable the player and the problem is solved.
On the control panel of the
laptop, choose Sound, right-click TEX0, and choose Disable from the shortcut menu.