After the last kernel update to

Linux 5.3.18-lp152.60-preempt #1 SMP PREEMPT Tue Jan 12 23:10:31 UTC 2021
(9898712)

the microphone of my USB Webcam (Logitech C270) isn't detected by Pulseaudio
anymore.

If I boot with the old kernel

Linux 5.3.18-lp152.57-preempt #1 SMP PREEMPT Fri Dec 4 07:27:58 UTC 2020
(7be5551)

it works again.

With the new kernel Pulseaudio shows the following errors:

E: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
E: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument:
"device_id="1" name="usb-046d_0825_59DC47E0-02"
card_name="alsa_card.usb-046d_0825_59DC47E0-02" 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.


cat /proc/asound/cards outputs the following:
 0 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfce60000 irq 100
 1 [U0x46d0x825    ]: USB-Audio - USB Device 0x46d:0x825
                      USB Device 0x46d:0x825 at usb-0000:2b:00.3-1, high speed
 2 [Generic        ]: HDA-Intel - HD-Audio Generic
                      HD-Audio Generic at 0xfc800000 irq 101
 3 [J370           ]: USB-Audio - Jabra Link 370
                      Jabra Link 370 at usb-0000:03:00.0-3, full speed

It seems OK. Device 1 is the microphone of the USB cam. All other devices are
detected by Pulseaudio.