On 7/27/21 12:21 PM, Thomas Amm wrote:
On Tue, 2021-07-27 at 11:44 -0400, Paul M. Foster wrote:
Folks:
I bought a Logitech C270 webcam, which is supposed to work in Linux.
It
does, EXCEPT the microphone isn't picking up sound. I've checked in
alsamixer, and the microphone device can be selected. But under
cheese
or other software, it still does not capture. Yes, I've googled this,
but it's Linux, so there are few answers and none of them work for
me.
Any help?
Paul
Probably, as I still am having such a camera around somewhere. I
remember having used it and -vaguely- that I had problems to keep it
from registering as primary audio device. So there should be a way.
Some details would be nice to know:
-what does 'lsmod|grep audio' return
-what is the output of 'cat /proc/asound/cards'
-what does 'tail -f /var/log/syslog' say when you plug in the camera
(try hotplugging it while 'tail -f[...]' is running)
-is the camera connected to a USB-2 or a USB-3 port? I remember the
C270 causing trouble with some USB-3 ports.
As follows:
paulf@dudley:~$ lsmod | grep audio
snd_usb_audio 262144 2
snd_usbmidi_lib 36864 1 snd_usb_audio
snd_hwdep 16384 2 snd_usb_audio,snd_hda_codec
snd_pcm 114688 6
snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core
snd 94208 27
snd_hda_codec_generic,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
usbcore 294912 9
xhci_hcd,snd_usb_audio,usbhid,snd_usbmidi_lib,usblp,usb_storage,uvcvideo,xhci_pci,uas
paulf@dudley:~$ cat /proc/asound/cards
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xdf040000 irq 127
1 [U0x46d0x825 ]: USB-Audio - USB Device 0x46d:0x825
USB Device 0x46d:0x825 at usb-0000:00:14.0-2,
high speed
Card #1 above is the C270.
I don't want to hotplug this thing if I can avoid it-- it's way down and
under everything. Plugged into a USB 2 slot.
Paul
