ADB devices block and USB devices not attached in DispVM


Qubes 4.0

I use sys-USB to deal with the USB devices attached to my AppVM.
I can attach my Android phone to my DispVM with sys-USB and the Android phone reacts well: USB debugging on + RSA fingerprint of the DispVM.

The USB option are set to MTP

However, in terminal if I run
adb devices
List of devices attached

the list is empty.
In Files manager the Android phone also doesn’t show up.

I don’t find much information about this one except from 2016

Note: the solution with adb connect IP:port doesn’t work for me because I don’t have the ADB settings in debug options menu on my Android phone.

Perhaps there is an issue with the DispVM firewall and TCP port? The adb daemon start at

Thank you,