Since installing fedora 34 I have no input from microphone.

The microphone appears in audiomixer (pavucontrol I assume)

All modules seem to be loaded and playback is fine

the only error message I can see is from dmesg -T

traps: gnome-sound-rec[2335] trap int3 ip:7f9b4652df7f sp:7ffdf71ddc70 error:0 in libglib-2.0.so.0.6800.1[7f9b464ef000+90000]

lspci

00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller (rev 0e)

arecord -l

**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

pw-record --list-targets
Available targets ("*" denotes default): alsa_input.pci-0000_00_1b.0.input_analog-stereo
* 42: description="Built-in Audio Analog Stereo Input" prio=2000

But zero input from mic

If I plug in a cheap microphone it works, so something weird is happening

Any ideas