I’ve built my sys-usb now on a fedora32 template and a dvm setup (according to this manual: ). Every usb-device works fine except the built-in camera. The camera is being detected during sys-usb-dvm startup, but when I try to connect it to another AppVM, I receive the message: “Attaching device MyDevice to AppVm failed. Error: QubesException - Device attach failed: No device info received, connection failed, check backend side for details.” When I switch back my usb controller to the original sys-usb, I can use my camera by attaching it to AppVMs. 1. What is meant by backend? Is this the sys-usb or the AppVM I’m trying the camera attach to? Which log should I look at? 2. Any ideas how to resolve that issue or how to investigate? Best, P – You received this message because you are subscribed to the Google Groups “qubes-users” group. To unsubscribe from this group and stop receiving emails from it, send an email to . To view this discussion on the web visit .