Ok, it seems like this bug is not reproduced every time I plug webcam. This time webcam was hooked up successfully, revealing following in `pactl list cards`:
Nevertheless, kern.log had following after plugging webcam in:
Jan 6 20:52:44 t-rex kernel: [30006.048355] usb 1-5: new high-speed USB device number 6 using ehci_hcd
Jan 6 20:52:45 t-rex kernel: [30006.396631] usb 1-5: New USB device found, idVendor=046d, idProduct=0825
Jan 6 20:52:45 t-rex kernel: [30006.396644] usb 1-5: New USB device strings: Mfr=0, Product=0, SerialNumber=2
Jan 6 20:52:45 t-rex kernel: [30006.396652] usb 1-5: SerialNumber: FCE88FE0
Jan 6 20:52:45 t-rex kernel: [30006.398104] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
Jan 6 20:52:45 t-rex kernel: [30006.495377] input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:12.2/usb1/1-5/1-5:1.0/input/input19
Jan 6 20:52:46 t-rex kernel: [30007.502483] 6:3:3: cannot set freq 32000 to ep 0x86
Note "32000" in last line instead of "48000" as in original issue.
Ok, it seems like this bug is not reproduced every time I plug webcam. This time webcam was hooked up successfully, revealing following in `pactl list cards`:
Card #4 usb-046d_ 0825_FCE88FE0- 02-U0x46d0x825 long_card_ name = "USB Device 0x46d:0x825 at usb-0000:00:12.2-5, high speed" 00:12.2- usb-0:5: 1.2" pci0000: 00/0000: 00:12.2/ usb1/1- 5/1-5:1. 2/sound/ card2" 0825_FCE88FE0- 02-U0x46d0x825" vendor. name = "Logitech, Inc." product. name = "Webcam C270" FCE88FE0" form_factor = "webcam" description = "Webcam C270" udev-detect. discovered = "1" analog- mono: Analog Mono Input (sinks: 0, sources: 1, priority. 1) input-microphon e: Microphone (priority: 8700)
Name: alsa_card.
Driver: module-alsa-card.c
Owner Module: 26
Properties:
alsa.card = "2"
alsa.card_name = "USB Device 0x46d:0x825"
alsa.
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:
sysfs.path = "/devices/
udev.id = "usb-046d_
device.bus = "usb"
device.vendor.id = "046d"
device.
device.product.id = "0825"
device.
device.serial = "046d_0825_
device.
device.string = "2"
device.
module-
device.icon_name = "camera-web-usb"
Profiles:
input:
off: Off (sinks: 0, sources: 0, priority. 0)
Active Profile: input:analog-mono
Ports:
analog-
Part of profile(s): input:analog-mono
Nevertheless, kern.log had following after plugging webcam in:
Jan 6 20:52:44 t-rex kernel: [30006.048355] usb 1-5: new high-speed USB device number 6 using ehci_hcd pci0000: 00/0000: 00:12.2/ usb1/1- 5/1-5:1. 0/input/ input19
Jan 6 20:52:45 t-rex kernel: [30006.396631] usb 1-5: New USB device found, idVendor=046d, idProduct=0825
Jan 6 20:52:45 t-rex kernel: [30006.396644] usb 1-5: New USB device strings: Mfr=0, Product=0, SerialNumber=2
Jan 6 20:52:45 t-rex kernel: [30006.396652] usb 1-5: SerialNumber: FCE88FE0
Jan 6 20:52:45 t-rex kernel: [30006.398104] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
Jan 6 20:52:45 t-rex kernel: [30006.495377] input: UVC Camera (046d:0825) as /devices/
Jan 6 20:52:46 t-rex kernel: [30007.502483] 6:3:3: cannot set freq 32000 to ep 0x86
Note "32000" in last line instead of "48000" as in original issue.