我的英特尔笔记本电脑上安装了 Ubuntu 20.04.2 LTS。麦克风一直工作正常，直到突然无缘无故停止工作。我一直在使用 OBS Studio。
以下是一些调试：
morad@Zelakolase:~$ aplay -l && arecord -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3227 Analog [ALC3227 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3227 Analog [ALC3227 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
和
morad@Zelakolase:~$ lspci -vvv
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
Subsystem: Hewlett-Packard Company Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: skl_uncore
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Skylake GT2 [HD Graphics 520]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 129
Region 0: Memory at b0000000 (64-bit, non-prefetchable) [size=16M]
Region 2: Memory at a0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 4000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
Subsystem: Hewlett-Packard Company Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 0: Memory at b1220000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
Kernel driver in use: proc_thermal
Kernel modules: processor_thermal_device
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
Subsystem: Hewlett-Packard Company Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 11
Region 0: Memory at b1232000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21) (prog-if 30 [XHCI])
Subsystem: Hewlett-Packard Company Sunrise Point-LP USB 3.0 xHCI Controller
Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 124
Region 0: Memory at b1210000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
Subsystem: Hewlett-Packard Company Sunrise Point-LP Thermal subsystem
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 18
Region 0: Memory at b1233000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
Subsystem: Hewlett-Packard Company Sunrise Point-LP CSME HECI
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 127
Region 0: Memory at b1234000 (64-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21) (prog-if 01 [AHCI 1.0])
Subsystem: Hewlett-Packard Company Sunrise Point-LP SATA Controller [AHCI mode]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 126
Region 0: Memory at b1230000 (32-bit, non-prefetchable) [size=8K]
Region 1: Memory at b1237000 (32-bit, non-prefetchable) [size=256]
Region 2: I/O ports at 4080 [size=8]
Region 3: I/O ports at 4088 [size=4]
Region 4: I/O ports at 4060 [size=32]
Region 5: Memory at b1235000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 122
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00003000-00003fff [size=4K]
Memory behind bridge: b1100000-b11fffff [size=1M]
Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff [disabled]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 123
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 0000f000-00000fff [disabled]
Memory behind bridge: b1000000-b10fffff [size=1M]
Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff [disabled]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
Subsystem: Hewlett-Packard Company Sunrise Point-LP LPC Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
Subsystem: Hewlett-Packard Company Sunrise Point-LP PMC
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: Memory at b122c000 (32-bit, non-prefetchable) [size=16K]
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21) (prog-if 80)
Subsystem: Hewlett-Packard Company Sunrise Point-LP HD Audio
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 130
Region 0: Memory at b1228000 (64-bit, non-prefetchable) [size=16K]
Region 4: Memory at b1200000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
Subsystem: Hewlett-Packard Company Sunrise Point-LP SMBus
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 16
Region 0: Memory at b1236000 (64-bit, non-prefetchable) [size=256]
Region 4: I/O ports at 4040 [size=32]
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
DeviceName: Hanksville Gbe Lan Connection
Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: I/O ports at 3000 [size=256]
Region 2: Memory at b1104000 (64-bit, non-prefetchable) [size=4K]
Region 4: Memory at b1100000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169
02:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3168NGW [Stone Peak] (rev 10)
DeviceName: WLAN
Subsystem: Intel Corporation Dual Band Wireless-AC 3168NGW [Stone Peak]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 128
Region 0: Memory at b1000000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
和
morad@Zelakolase:~$ lsmod
Module Size Used by
uvcvideo 98304 0
videobuf2_vmalloc 20480 1 uvcvideo
videobuf2_memops 20480 1 videobuf2_vmalloc
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_common 57344 2 videobuf2_v4l2,uvcvideo
videodev 241664 3 videobuf2_v4l2,uvcvideo,videobuf2_common
mc 57344 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
snd_rawmidi 36864 1 snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
rfcomm 81920 4
vboxnetadp 28672 0
vboxnetflt 28672 0
vboxdrv 516096 2 vboxnetadp,vboxnetflt
ccm 20480 3
cmac 16384 6
algif_hash 16384 3
algif_skcipher 16384 3
af_alg 28672 14 algif_hash,algif_skcipher
bnep 24576 2
mei_hdcp 24576 0
intel_rapl_msr 20480 0
btusb 57344 0
snd_hda_codec_hdmi 61440 1
x86_pkg_temp_thermal 20480 0
intel_powerclamp 20480 0
btrtl 24576 1 btusb
coretemp 20480 0
btbcm 16384 1 btusb
snd_hda_codec_realtek 131072 1
btintel 28672 1 btusb
kvm_intel 286720 0
bluetooth 581632 31 btrtl,btintel,btbcm,bnep,btusb,rfcomm
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 1 snd_hda_codec_generic
iwlmvm 393216 0
kvm 712704 1 kvm_intel
ecdh_generic 16384 1 bluetooth
ecc 32768 1 ecdh_generic
mac80211 905216 1 iwlmvm
i915 2195456 19
libarc4 16384 1 mac80211
crct10dif_pclmul 16384 1
ghash_clmulni_intel 16384 0
aesni_intel 372736 11
snd_hda_intel 53248 3
crypto_simd 16384 1 aesni_intel
cryptd 24576 5 crypto_simd,ghash_clmulni_intel
snd_intel_dspcfg 24576 1 snd_hda_intel
glue_helper 16384 1 aesni_intel
snd_hda_codec 139264 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
drm_kms_helper 217088 1 i915
snd_hda_core 94208 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 20480 1 snd_hda_codec
cec 53248 2 drm_kms_helper,i915
snd_pcm 114688 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
rc_core 57344 1 cec
iwlwifi 352256 1 iwlmvm
rapl 20480 0
intel_cstate 20480 0
intel_xhci_usb_role_switch 16384 0
roles 16384 1 intel_xhci_usb_role_switch
i2c_algo_bit 16384 1 i915
cfg80211 778240 3 iwlmvm,iwlwifi,mac80211
joydev 24576 0
input_leds 16384 0
fb_sys_fops 16384 1 drm_kms_helper
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
serio_raw 20480 0
mei_me 40960 1
snd_timer 40960 2 snd_seq,snd_pcm
ee1004 20480 0
kxcjk_1013 28672 0
processor_thermal_device 24576 0
snd 94208 17 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
intel_rapl_common 28672 2 intel_rapl_msr,processor_thermal_device
mei 106496 3 mei_hdcp,mei_me
industrialio_triggered_buffer 16384 1 kxcjk_1013
kfifo_buf 16384 1 industrialio_triggered_buffer
hp_wmi 16384 0
intel_vbtn 20480 0
int340x_thermal_zone 20480 1 processor_thermal_device
cm32181 16384 0
mac_hid 16384 0
intel_soc_dts_iosf 20480 1 processor_thermal_device
sparse_keymap 16384 2 hp_wmi,intel_vbtn
soundcore 16384 1 snd
industrialio 77824 4 industrialio_triggered_buffer,cm32181,kfifo_buf,kxcjk_1013
int3400_thermal 20480 0
acpi_thermal_rel 16384 1 int3400_thermal
intel_pch_thermal 20480 0
hp_wireless 16384 0
intel_wmi_thunderbolt 20480 0
wmi_bmof 16384 0
acpi_pad 184320 0
sch_fq_codel 20480 2
parport_pc 45056 0
drm 552960 8 drm_kms_helper,i915
ppdev 24576 0
lp 20480 0
parport 65536 3 parport_pc,lp,ppdev
ip_tables 32768 0
x_tables 49152 1 ip_tables
autofs4 45056 2
crc32_pclmul 16384 0
i2c_i801 32768 0
psmouse 155648 0
ahci 40960 2
i2c_smbus 20480 1 i2c_i801
libahci 36864 1 ahci
r8169 77824 0
realtek 24576 1
xhci_pci 20480 0
xhci_pci_renesas 20480 1 xhci_pci
wmi 32768 3 hp_wmi,intel_wmi_thunderbolt,wmi_bmof
video 49152 1 i915
有什么想法吗？