Thanks for this reply. I still haven't found a way to get that Logitech
c910 webcam on my desktop running Debian Stretch. It operates only as a
camera and does not record any sound.
(This same Logitech c910 works on my laptop running Ubuntu 14.04. It
works bad : the recorded sound is mixed with a loud background noise,
possibly that of the laptop fan, but it does still work. The built in
camera (Bison) also records loud background noise.
Back to my desktop running Stretch, I ran the following tests :
ls /dev/video*
/dev/video0
ls /dev/audio*
ls: impossible d'accéder à '/dev/audio*': Aucun fichier ou dossier de ce
type
(Whether my webcam is plugged or not, ls /dev/audio* doesn't show
anything. /dev/video0 only shows when the webcam is plugged to usb port)
Using VLC, I got info about audio peripherics :
GK208 HDMI/DP Audio controller Digital Stereo (HDMI2)
#dmesg : This is weird :
[ 830.346032] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0821)
[ 830.359491] uvcvideo 1-10.3:1.2: Entity type for entity Extension 4
was not initialized!
etc.
[........................................
[273.480947] usb 1-10.3: reset high-speed USB device number 6 using xhci_hcd
[ 825.951919] usb 1-10.3: USB disconnect, device number 6
[ 829.503038] usb 1-10.3: new high-speed USB device number 7 using xhci_hcd
[ 829.874824] usb 1-10.3: New USB device found, idVendor=046d,
idProduct=0821
[ 829.874830] usb 1-10.3: New USB device strings: Mfr=0, Product=0,
SerialNumber=1
[ 829.874834] usb 1-10.3: SerialNumber: 314061A0
[ 830.346032] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0821)
[ 830.359491] uvcvideo 1-10.3:1.2: Entity type for entity Extension 4
was not initialized!
[ 830.359499] uvcvideo 1-10.3:1.2: Entity type for entity Processing 2
was not initialized!
[ 830.359504] uvcvideo 1-10.3:1.2: Entity type for entity Camera 1 was
not initialized!
[ 830.359508] uvcvideo 1-10.3:1.2: Entity type for entity Extension 5
was not initialized!
[ 830.359512] uvcvideo 1-10.3:1.2: Entity type for entity Extension 6
was not initialized!
[ 830.359515] uvcvideo 1-10.3:1.2: Entity type for entity Extension 7
was not initialized!
[ 830.359519] uvcvideo 1-10.3:1.2: Entity type for entity Extension 8
was not initialized!
[ 830.359821] input: UVC Camera (046d:0821) as
/devices/pci0000:00/0000:00:14.0/usb1/1-10/1-10.3/1-10.3:1.2/input/input15
root@Debian-Stretch:/home/bd#
*****************
Tests using v4l2-ctl
bd@Debian-Stretch:~$ v4l2-ctl --list-devices
UVC Camera (046d:0821) (usb-0000:00:14.0-9):
/dev/video0
The 'list of configurable controls' only concerns video, nothing about
audio !
$ arecord -l
**** Liste des Périphériques Matériels CAPTURE ****
carte 0: PCH [HDA Intel PCH], périphérique 0: ALC887-VD Analog
[ALC887-VD Analog]
Sous-périphériques: 1/1
Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 2: ALC887-VD Alt Analog
[ALC887-VD Alt Analog]
Sous-périphériques: 1/1
Sous-périphérique #0: subdevice #0
carte 2: U0x46d0x821 [USB Device 0x46d:0x821], périphérique 0: USB Audio
[USB Audio]
Sous-périphériques: 1/1
Sous-périphérique #0: subdevice #0
Here we can see mention of the audio function
Hoping for more help,
Bernard
On 02/04/2020 06:39, Celejar wrote:
On Wed, 1 Apr 2020 17:14:29 +0200
Bernard <bdebr...@free.fr> wrote:
testing with cheese, it doesn't record any sound. Thanks in advance for
Try testing the camera with other software, e.g., ffmpeg, mpv, vlc:
https://wiki.archlinux.org/index.php/Webcam_setup
https://help.ubuntu.com/community/Webcam
Celejar
