Hello everyone, I have a problem with a Class-2 compatible USB device (RODECaster Pro) that won't show up as an audio input when connected to my Linux machine. This issue affects one other person who opened the following issue on the Ubuntu alsa-driver bug tracker: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1877726 In my comment [1] I've shared the log output I see when I connect this device to my Linux machine: kernel: usb 2-9.4.2: new high-speed USB device number 20 using xhci_hcd kernel: usb 2-9.4.2: New USB device found, idVendor=19f7, idProduct=0011, bcdDevice= 2.10 kernel: usb 2-9.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: usb 2-9.4.2: Product: RODECaster Pro kernel: usb 2-9.4.2: Manufacturer: RODE Microphones kernel: usb 2-9.4.2: SerialNumber: 00000000001A kernel: hid-generic 0003:19F7:0011.0009: hiddev1,hidraw7: USB HID v1.10 Device [RODE Microphones RODECaster Pro] on usb-0000:00:14.0-9.4.2/input0 kernel: usb 2-9.4.2: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 1) kernel: usb 2-9.4.2: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 1) mtp-probe[4037]: checking bus 2, device 20: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.4/2-9.4.2" mtp-probe[4037]: bus: 2, device: 20 was not an MTP device systemd-udevd[4043]: controlC4: Process '/usr/bin/alsactl restore 4' failed with exit code 99. mtp-probe[4050]: checking bus 2, device 20: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-9/2-9.4/2-9.4.2" mtp-probe[4050]: bus: 2, device: 20 was not an MTP device pulseaudio[1460]: E: [pulseaudio] module-alsa-card.c: Failed to find a working profile. pulseaudio[1460]: E: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="4" name="usb-RODE_Microphones_RODECaster_Pro_00000000001A-01" card_name="alsa_card.usb-RODE_Microphones_RODECaster_Pro_00000000001A-01" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1""): initialization failed. [1]: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1877726/comments/6 I've connected a Focusrite Scarlett 2i2 and it shows up as an input as I expect. This leads me to believe either the RCP is not class-2 compliant as advertised or that there's a bug in ALSA somewhere. If anyone has any tips on how I might fix this error parsing audio format rates I'd be eternally grateful! -- James Conroy-Finn _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
