Microphone is muted after few seconds in zoom meet duo calls

Hi, using Manjaro on a Ryzen Minisforum pc,

My Webcam’s microphone works, but it mutes after few secs in meeting calls

if I fiddle the microphone level moving the slider it works again for a few seconds

Any ideas? I

lshw output:

 description: Computer
    width: 64 bits
    capabilities: smp vsyscall32
  *-core
       description: Motherboard
       physical id: 0
     *-memory
          description: System memory
          physical id: 0
          size: 14GiB
     *-cpu
          product: AMD Ryzen 5 3550H with Radeon Vega Mobile Gfx
          vendor: Advanced Micro Devices [AMD]
          physical id: 1
          bus info: cpu@0
          size: 1510MHz
          capacity: 2100MHz
          width: 64 bits
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp x86-64 constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca sme sev sev_es cpufreq
     *-pci:0
          description: Host bridge
          product: Raven/Raven2 Root Complex
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 00
          width: 32 bits
          clock: 33MHz
        *-generic UNCLAIMED
             description: IOMMU
             product: Raven/Raven2 IOMMU
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 0.2
             bus info: pci@0000:00:00.2
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: cap_list
             configuration: latency=0
        *-pci:0
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.1
             bus info: pci@0000:00:01.1
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:26 memory:fcf00000-fcffffff
           *-nvme
                description: NVMe device
                product: VICKTER NVME SSD
                vendor: MAXIO Technology (Hangzhou) Ltd.
                physical id: 0
                bus info: pci@0000:01:00.0
                logical name: /dev/nvme0
                version: H220303a
                serial: WLN020A02287
                width: 64 bits
                clock: 33MHz
                capabilities: nvme nvm_express bus_master cap_list
                configuration: driver=nvme latency=0 nqn=nqn.2014.08.org.nvmexpress:1e4b1e4bWLN020A02287        VICKTER NVME SSD state=live
                resources: irq:31 memory:fcf00000-fcf03fff
              *-namespace:0
                   description: NVMe disk
                   physical id: 0
                   logical name: hwmon1
              *-namespace:1
                   description: NVMe disk
                   physical id: 2
                   logical name: /dev/ng0n1
              *-namespace:2
                   description: NVMe disk
                   physical id: 1
                   bus info: nvme@0:1
                   logical name: /dev/nvme0n1
                   configuration: wwid=nvme.1e4b-574c4e303230413032323837-5649434b544552204e564d4520535344-00000001
        *-pci:1
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.2
             bus info: pci@0000:00:01.2
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:27 ioport:1000(size=4096) memory:fce00000-fcefffff ioport:f0200000(size=2097152)
           *-network
                description: Wireless interface
                product: Wireless 7265
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: wlp2s0
                version: 59
                serial: 46:ea:31:e7:2b:80
                width: 64 bits
                clock: 33MHz
                capabilities: bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=5.15.53-1-MANJARO firmware=29.4063824552.0 7265D-29.ucode latency=0 link=no multicast=yes wireless=IEEE 802.11
                resources: irq:67 memory:fce00000-fce01fff
        *-pci:2
             description: PCI bridge
             product: Raven/Raven2 PCIe GPP Bridge [6:0]
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 1.4
             bus info: pci@0000:00:01.4
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:28 memory:fca00000-fccfffff
           *-network
                description: Ethernet interface
                product: Ethernet Controller I225-V
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: enp3s0
                version: 01
                serial: 1c:83:41:30:b7:f4
                size: 100Mbit/s
                capacity: 1Gbit/s
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list rom ethernet physical 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=igc driverversion=5.15.53-1-MANJARO duplex=full firmware=1045:740 ip=192.168.1.31 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
                resources: irq:60 memory:fcb00000-fcbfffff memory:fcc00000-fcc03fff memory:fca00000-fcafffff
        *-pci:3
             description: PCI bridge
             product: Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus A
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 8.1
             bus info: pci@0000:00:08.1
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:29 ioport:f000(size=4096) memory:fc500000-fc9fffff ioport:e0000000(size=270532608)
           *-display
                description: VGA compatible controller
                product: Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series]
                vendor: Advanced Micro Devices, Inc. [AMD/ATI]
                physical id: 0
                bus info: pci@0000:04:00.0
                version: c2
                width: 64 bits
                clock: 33MHz
                capabilities: vga_controller bus_master cap_list rom
                configuration: driver=amdgpu latency=0
                resources: irq:24 memory:e0000000-efffffff memory:f0000000-f01fffff ioport:f000(size=256) memory:fc900000-fc97ffff memory:c0000-dffff
           *-multimedia:0
                description: Audio device
                product: Raven/Raven2/Fenghuang HDMI/DP Audio Controller
                vendor: Advanced Micro Devices, Inc. [AMD/ATI]
                physical id: 0.1
                bus info: pci@0000:04:00.1
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:71 memory:fc9c8000-fc9cbfff
           *-generic:0
                description: Encryption controller
                product: Family 17h (Models 10h-1fh) Platform Security Processor
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.2
                bus info: pci@0000:04:00.2
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list
                configuration: driver=ccp latency=0
                resources: irq:32 memory:fc800000-fc8fffff memory:fc9ce000-fc9cffff
           *-usb:0
                description: USB controller
                product: Raven USB 3.1
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.3
                bus info: pci@0000:04:00.3
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:43 memory:fc700000-fc7fffff
           *-usb:1
                description: USB controller
                product: Raven USB 3.1
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.4
                bus info: pci@0000:04:00.4
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:24 memory:fc600000-fc6fffff
           *-multimedia:1
                description: Multimedia controller
                product: ACP/ACP3X/ACP6x Audio Coprocessor
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.5
                bus info: pci@0000:04:00.5
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list
                configuration: driver=snd_pci_acp3x latency=0
                resources: irq:70 memory:fc980000-fc9bffff
           *-multimedia:2
                description: Audio device
                product: Family 17h/19h HD Audio Controller
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.6
                bus info: pci@0000:04:00.6
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:72 memory:fc9c0000-fc9c7fff
           *-generic:1
                description: Non-VGA unclassified device
                product: Raven/Raven2/Renoir Non-Sensor Fusion Hub KMDF driver
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0.7
                bus info: pci@0000:04:00.7
                version: 00
                width: 32 bits
                clock: 33MHz
                capabilities: cap_list
                configuration: driver=i2c_amd_mp2 latency=0
                resources: irq:43 memory:fc500000-fc5fffff memory:fc9cc000-fc9cdfff
        *-pci:4
             description: PCI bridge
             product: Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus B
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 8.2
             bus info: pci@0000:00:08.2
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:30 memory:fcd00000-fcdfffff
           *-sata
                description: SATA controller
                product: FCH SATA Controller [AHCI mode]
                vendor: Advanced Micro Devices, Inc. [AMD]
                physical id: 0
                bus info: pci@0000:05:00.0
                version: 61
                width: 32 bits
                clock: 33MHz
                capabilities: sata ahci_1.0 bus_master cap_list
                configuration: driver=ahci latency=0
                resources: irq:34 memory:fcd00000-fcd007ff
        *-serial
             description: SMBus
             product: FCH SMBus Controller
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 61
             width: 32 bits
             clock: 66MHz
             configuration: driver=piix4_smbus latency=0
             resources: irq:0
        *-isa
             description: ISA bridge
             product: FCH LPC Bridge
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 14.3
             bus info: pci@0000:00:14.3
             version: 51
             width: 32 bits
             clock: 66MHz
             capabilities: isa bus_master
             configuration: latency=0
     *-pci:1
          description: Host bridge
          product: Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 101
          bus info: pci@0000:00:01.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:2
          description: Host bridge
          product: Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 102
          bus info: pci@0000:00:08.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:3
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 0
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 103
          bus info: pci@0000:00:18.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:4
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 1
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 104
          bus info: pci@0000:00:18.1
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:5
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 2
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 105
          bus info: pci@0000:00:18.2
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:6
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 3
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 106
          bus info: pci@0000:00:18.3
          version: 00
          width: 32 bits
          clock: 33MHz
          configuration: driver=k10temp
          resources: irq:0
     *-pci:7
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 4
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 107
          bus info: pci@0000:00:18.4
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:8
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 5
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 108
          bus info: pci@0000:00:18.5
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:9
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 6
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 109
          bus info: pci@0000:00:18.6
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:10
          description: Host bridge
          product: Raven/Raven2 Device 24: Function 7
          vendor: Advanced Micro Devices, Inc. [AMD]
          physical id: 10a
          bus info: pci@0000:00:18.7
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pnp00:00
          product: System Board
          physical id: 2
          capabilities: pnp
          configuration: driver=system
     *-pnp00:01
          product: AT Real-Time Clock
          physical id: 3
          capabilities: pnp
          configuration: driver=rtc_cmos
     *-pnp00:02
          product: Motherboard registers
          physical id: 4
          capabilities: pnp
          configuration: driver=system
     *-pnp00:03
          product: Motherboard registers
          physical id: 5
          capabilities: pnp
          configuration: driver=system

this is the output of lsusb

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 8087:0a2a Intel Corp. Bluetooth wireless interface
Bus 003 Device 003: ID 0d8c:0014 C-Media Electronics, Inc. Audio Adapter (Unitek Y-247A)
Bus 003 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 062a:4182 MosArt Semiconductor Corp. 2.4G Keyboard Mouse
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 05a3:9331 ARC International Camera
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Hello,

Please use code tags next time when you share terminal output.

Check with alsamixer from terminal, press F6 then select the sound card, and disable the Auto-Mute feature.

Thanks for the informations.

I cannot find the Auto-Mute feature you said in alsamixer.

I tried to unmute all the microphones found.

Tested again, it does not work (zoom test call fails recording audio from microphone)

Any hint?