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I have a Logitech C922 Pro webcam which works perfectly on an Ubuntu
19.10 installation, but when plugged into my Ubuntu 20.04 system (with
all released updates), there is no sound from the microphone, either as
digital input or as "microphone" This has been tested with two identical
webcams (my CEO has one too) and on three Ubuntu installations plus the
19.10 where the webcam still works as expected.
dmesg output on plugging in the webcam:
[ 1123.265098] usb 1-8: new high-speed USB device number 14 using xhci_hcd
[ 1123.415363] usb 1-8: New USB device found, idVendor=046d, idProduct=085c,
bcdDevice= 0.16
[ 1123.415369] usb 1-8: New USB device strings: Mfr=0, Product=2, SerialNumber=1
[ 1123.415372] usb 1-8: Product: C922 Pro Stream Webcam
[ 1123.415375] usb 1-8: SerialNumber: 16FFBB9F
[ 1123.416467] uvcvideo: Found UVC 1.00 device C922 Pro Stream Webcam
(046d:085c)
[ 1123.418343] uvcvideo 1-8:1.0: Entity type for entity Processing 3 was not
initialized!
[ 1123.418347] uvcvideo 1-8:1.0: Entity type for entity Extension 6 was not
initialized!
[ 1123.418350] uvcvideo 1-8:1.0: Entity type for entity Extension 12 was not
initialized!
[ 1123.418353] uvcvideo 1-8:1.0: Entity type for entity Camera 1 was not
initialized!
[ 1123.418356] uvcvideo 1-8:1.0: Entity type for entity Extension 8 was not
initialized!
[ 1123.418359] uvcvideo 1-8:1.0: Entity type for entity Extension 9 was not
initialized!
[ 1123.418362] uvcvideo 1-8:1.0: Entity type for entity Extension 10 was not
initialized!
[ 1123.418364] uvcvideo 1-8:1.0: Entity type for entity Extension 11 was not
initialized!
[ 1123.418811] input: C922 Pro Stream Webcam as
/devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8:1.0/input/input23
[ 1147.505572] usb 1-8: reset high-speed USB device number 14 using xhci_hcd
lsusb output:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:0153 Realtek Semiconductor Corp. 3-in-1
(SD/SDHC/SDXC) Card Reader
Bus 001 Device 014: ID 046d:085c Logitech, Inc. C922 Pro Stream Webcam
Bus 001 Device 003: ID 04ca:006d Lite-On Technology Corp. USB Device
Bus 001 Device 005: ID 8087:0aa7 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsmod | grep usb_audio
snd_usb_audio 262144 1
snd_usbmidi_lib 36864 1 snd_usb_audio
snd_hwdep 20480 2 snd_usb_audio,snd_hda_codec
snd_pcm 106496 5
snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core
mc 53248 5
videodev,snd_usb_audio,videobuf2_v4l2,uvcvideo,videobuf2_common
snd 90112 29
snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
Any ideas greatly appreciated
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment focal
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Logitech webcam microphone not working
https://bugs.launchpad.net/bugs/1885259
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