I guess it is not possible to power the DTX only through USB? It might need too much power.
Is the auto power-off function disabled?
Does the DTX work with any computer?
Just tested to make sure but yes, the DTX does indeed work when I plug it to the computer. Powering only through USB isn't possible, but I have the module powered up by the power supply as usual. Can this be the problem cause the host wants to power up the USB device? The auto power-off was set to 30min by default, also tried setting it off but didn't make a difference since it never actually turned off. Weird thing is that the host keeps on the green light, indicating that it's connected to a USB device but the signal just won't go through.
Forgot to more specifically ask if I should use USB-MIDI interface such as Roland UM-One rather than the USB-MIDI host, since both DTX and the GH set can work independently?