Update (still not working):

Turned off the Funcube Dongle via Config tab in pavucontrol. Didn't seem to affect anything. GQRX behaves the same.

dmesg yields: [ 89.628088] usb 1-1.2: new full-speed USB device number 5 using ehci-pci [ 89.739007] usb 1-1.2: New USB device found, idVendor=04d8, idProduct=fb31 [ 89.739013] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 89.739016] usb 1-1.2: Product: FUNcube Dongle V2.0 [ 89.739018] usb 1-1.2: Manufacturer: Hanlincrest Ltd. [ 89.741208] hid-generic 0003:04D8:FB31.0005: hiddev1,hidraw2: USB HID v1.11 Device [Hanlincrest Ltd. FUNcube Dongle V2.0 ] on usb-0000:00:1a.0-1.2/input2 [ 89.930743] usb 1-1.2: 1:1: cannot get freq at ep 0x81 [ 89.933232] usbcore: registered new interface driver snd-usb-audio [ 90.010218] usb 1-1.2: 1:1: cannot get freq at ep 0x81 [ 90.050461] usb 1-1.2: 1:1: cannot get freq at ep 0x81

lsusb yields: Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 004: ID 0461:4dfe Primax Electronics, Ltd Bus 001 Device 005: ID 04d8:fb31 Microchip Technology, Inc. Bus 001 Device 003: ID 138a:003d Validity Sensors, Inc. VFS491 Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Are there any diagnostic utilities for the FCDPP? (like "rtl_test" for the rtl-sdr? Wishful thinking, perhaps....)

--Roy K3RLD