Audio no funciona en computer

El audio no funciona en la computer. Tengo una Emachine E725 y una partición con Windows 7 y Linux Mint Ulyana. Se escucha el sonido exterior, pero no se graba interiormente el sonido en grabación de pantalla. No se si es un problema de Hardware o de solfware. Adjunto la información del sistema de la partición Linux Mint.

System:    Kernel: 5.4.0-156-generic x86_64 bits: 64 compiler: gcc v: 9.4.0 Desktop: Xfce 4.14.2 
           tk: Gtk 3.24.13 wm: xfwm4 dm: LightDM Distro: Linux Mint 20 Ulyana 
           base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: eMachines product: eMachines E725 v: V3.07 serial: <filter> 
           Mobo: eMachines model: eMachines E725 v: V3.07 serial: <filter> BIOS: eMachines v: 3.07 
           date: 02/10/2010 
Battery:   ID-1: BAT0 charge: 45.0 Wh condition: 52.3/48.8 Wh (107%) volts: 11.7/11.1 
           model: SONY AS09A41 serial: <filter> status: Discharging 
CPU:       Topology: Dual Core model: Pentium T4500 bits: 64 type: MCP arch: Penryn rev: A 
           L2 cache: 1024 KiB 
           flags: lm nx pae sse sse2 sse3 ssse3 bogomips: 9176 
           Speed: 2294 MHz min/max: 1200/2300 MHz Core speeds (MHz): 1: 2294 2: 2294 
Graphics:  Device-1: Intel Mobile 4 Series Integrated Graphics vendor: Acer Incorporated ALI 
           driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:2a42 
           Display: x11 server: X.Org 1.20.13 driver: modesetting unloaded: fbdev,vesa 
           resolution: 1366x768~60Hz 
           OpenGL: renderer: Mesa DRI Mobile Intel GM45 Express (CTG) v: 2.1 Mesa 21.2.6 
           direct render: Yes 
Audio:     Device-1: Intel 82801I HD Audio vendor: Acer Incorporated ALI driver: snd_hda_intel 
           v: kernel bus ID: 00:1b.0 chip ID: 8086:293e 
           Sound Server: ALSA v: k5.4.0-156-generic 
Network:   Device-1: Qualcomm Atheros AR9285 Wireless Network Adapter vendor: Foxconn 
           driver: ath9k v: kernel port: 5000 bus ID: 04:00.0 chip ID: 168c:002b 
           IF: wlp4s0 state: up mac: <filter> 
           Device-2: Qualcomm Atheros AR8132 Fast Ethernet vendor: Acer Incorporated ALI 
           driver: atl1c v: 1.0.1.1-NAPI port: 1000 bus ID: 05:00.0 chip ID: 1969:1062 
           IF: enp5s0 state: down mac: <filter> 
Drives:    Local Storage: total: 931.51 GiB used: 447.77 GiB (48.1%) 
           ID-1: /dev/sda vendor: Toshiba model: MQ01ABD100 size: 931.51 GiB speed: 3.0 Gb/s 
           serial: <filter> 
Partition: ID-1: / size: 502.39 GiB used: 447.77 GiB (89.1%) fs: ext4 dev: /dev/sda5 
USB:       Hub: 1-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 chip ID: 1d6b:0002 
           Hub: 2-0:1 info: Full speed (or root) Hub ports: 8 rev: 2.0 chip ID: 1d6b:0002 
           Device-1: 2-4:3 info: Suyin Acer/HP Integrated Webcam [CN0314] type: Video 
           driver: uvcvideo rev: 2.0 chip ID: 064e:a103 
           Hub: 3-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 chip ID: 1d6b:0001 
           Hub: 4-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 chip ID: 1d6b:0001 
           Device-2: 4-1:2 info: Logitech Premium Optical Wheel Mouse (M-BT58) type: Mouse 
           driver: hid-generic,usbhid rev: 2.0 chip ID: 046d:c03e 
           Hub: 5-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 chip ID: 1d6b:0001 
           Hub: 6-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 chip ID: 1d6b:0001 
           Hub: 7-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 chip ID: 1d6b:0001 
Sensors:   System Temperatures: cpu: 58.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/linrunner-tlp-focal.list 
           1: deb http: //ppa.launchpad.net/linrunner/tlp/ubuntu focal main
           Active apt repos in: /etc/apt/sources.list.d/obsproject-obs-studio-focal.list 
           1: deb http: //ppa.launchpad.net/obsproject/obs-studio/ubuntu focal main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http: //packages.linuxmint.com ulyana main upstream import backport #id:linuxmint_main
           2: deb http: //archive.ubuntu.com/ubuntu focal main restricted universe multiverse
           3: deb http: //archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
           4: deb http: //archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
           5: deb http: //security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http: //archive.canonical.com/ubuntu/ focal partner
           Active apt repos in: /etc/apt/sources.list.d/skype-stable.list 
           1: deb [arch=amd64] https: //repo.skype.com/deb stable main
Info:      Processes: 162 Uptime: 30m Memory: 1.86 GiB used: 743.5 MiB (39.1%) Init: systemd 
           v: 245 runlevel: 5 Compilers: gcc: 9.4.0 alt: 7/9 Client: Unknown python3.8 client 
           inxi: 3.0.38