I have a Colibri T20 running on WEC7 with the image 1.4 and a resistive touchscreen. Sometimes when I keep pressed the touchscreen (long click) it stops working and also does the audio.
In this situation the application and the operating system keep working fine. I can click the screen controls with a mouse.
When I migrated from image 1.3 to 1.4, Toradex sent me a registry patch to avoid a ‘pop’ noise after I played an audio stream, that I’m currently using:
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\nvwavedev] "PowerUpMask"=dword:00007F00 "PowerDownMask"=dword:00003700