No audio from port of external monitor connected via HDMI cable

No audio from headphones connected to external monitor audio port

rajsahu shenronSlayer >  inxi -Fazy
System:
  Kernel: 5.4.124-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.4-x86_64 
  root=UUID=8773446f-3d3b-4edf-8b67-4bd0513f7451 rw quiet apparmor=1 
  security=apparmor udev.log_priority=3 
  Desktop: KDE Plasma 5.21.5 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 
  dm: SDDM Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Laptop System: Dell product: G7 7590 v: N/A serial: <filter> Chassis: 
  type: 10 serial: <filter> 
  Mobo: Dell model: 0MXHK3 v: A00 serial: <filter> UEFI: Dell v: 1.14.0 
  date: 10/20/2020 
Battery:
  ID-1: BAT0 charge: 22.4 Wh (44.8%) condition: 50.0/60.0 Wh (83.3%) 
  volts: 16.2 min: 15.2 model: BYD DELL HYWXJ97 type: Li-poly serial: <filter> 
  status: Charging 
CPU:
  Info: 6-Core model: Intel Core i7-9750H bits: 64 type: MT MCP 
  arch: Kaby Lake note: check family: 6 model-id: 9E (158) stepping: A (10) 
  microcode: DE cache: L2: 12 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 62431 
  Speed: 965 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 965 2: 972 3: 939 
  4: 926 5: 991 6: 1000 7: 1000 8: 959 9: 992 10: 976 11: 994 12: 987 
  Vulnerabilities: Type: itlb_multihit status: KVM: Split huge pages 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: Intel UHD Graphics 630 vendor: Dell driver: i915 v: kernel 
  bus-ID: 00:02.0 chip-ID: 8086:3e9b class-ID: 0300 
  Device-2: NVIDIA TU116M [GeForce GTX 1660 Ti Mobile] vendor: Dell 
  driver: nvidia v: 465.31 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
  chip-ID: 10de:2191 class-ID: 0300 
  Device-3: Realtek Integrated_Webcam_HD type: USB driver: uvcvideo 
  bus-ID: 1-5:3 chip-ID: 0bda:565a class-ID: 0e02 serial: <filter> 
  Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver: 
  loaded: modesetting,nvidia unloaded: intel,nouveau alternate: fbdev,nv,vesa 
  display-ID: :0 screens: 1 
  Screen-1: 0 s-res: 3286x1080 s-dpi: 96 s-size: 867x285mm (34.1x11.2") 
  s-diag: 913mm (35.9") 
  Monitor-1: eDP-1 res: 1920x1080 hz: 60 dpi: 142 size: 344x194mm (13.5x7.6") 
  diag: 395mm (15.5") 
  Monitor-2: HDMI-1-0 res: 1366x768 hz: 60 dpi: 85 size: 410x230mm (16.1x9.1") 
  diag: 470mm (18.5") 
  OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 21.1.2 
  direct render: Yes 
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel 
  v: kernel alternate: snd_soc_skl,snd_sof_pci bus-ID: 00:1f.3 
  chip-ID: 8086:a348 class-ID: 0403 
  Sound Server-1: ALSA v: k5.4.124-1-MANJARO running: yes 
  Sound Server-2: JACK v: 0.125.0 running: no 
  Sound Server-3: PulseAudio v: 14.2 running: yes 
  Sound Server-4: PipeWire v: 0.3.30 running: no 
Network:
  Device-1: Realtek vendor: Dell driver: r8169 v: kernel port: 3000 
  bus-ID: 3c:00.0 chip-ID: 10ec:2502 class-ID: 0200 
  IF: enp60s0 state: down mac: <filter> 
  Device-2: Intel Wireless-AC 9260 vendor: Rivet Networks driver: iwlwifi 
  v: kernel port: 3000 bus-ID: 3d:00.0 chip-ID: 8086:2526 class-ID: 0280 
  IF: wlp61s0 state: up mac: <filter> 
Bluetooth:
  Device-1: Intel Wireless-AC 9260 Bluetooth Adapter type: USB driver: btusb 
  v: 0.8 bus-ID: 1-14:5 chip-ID: 8087:0025 class-ID: e001 
  Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running 
  rfk-block: hardware: no software: yes address: see --recommends 
Drives:
  Local Storage: total: 1.14 TiB used: 92.44 GiB (7.9%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Toshiba 
  model: KBG40ZNS256G NVMe 256GB size: 238.47 GiB block-size: physical: 512 B 
  logical: 512 B speed: 31.6 Gb/s lanes: 4 rotation: SSD serial: <filter> 
  rev: 10410106 scheme: GPT 
  ID-2: /dev/sda maj-min: 8:0 vendor: Seagate model: ST1000LM035-1RK172 
  size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s 
  rotation: 5400 rpm serial: <filter> rev: SDM3 scheme: GPT 
Partition:
  ID-1: / raw-size: 104 GiB size: 101.87 GiB (97.95%) used: 92.4 GiB (90.7%) 
  fs: ext4 dev: /dev/nvme0n1p7 maj-min: 259:7 
  ID-2: /boot/efi raw-size: 500 MiB size: 496 MiB (99.20%) 
  used: 47.7 MiB (9.6%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 16.13 GiB used: 0 KiB (0.0%) priority: -2 
  dev: /dev/nvme0n1p8 maj-min: 259:8 
Sensors:
  System Temperatures: cpu: 67.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 334 Uptime: 3h 02m wakeups: 142 Memory: 15.46 GiB 
  used: 6.68 GiB (43.2%) Init: systemd v: 248 tool: systemctl Compilers: 
  gcc: 11.1.0 Packages: 1546 pacman: 1539 lib: 397 flatpak: 0 snap: 7 
  Shell: Bash v: 5.1.8 running-in: yakuake inxi: 3.3.04 

Hi,

the channel might be muted. Try running

alsamixer

and switch to the HDMI output. If the Master and/or PCM channel show MM at the bottom, they are muted. Just select them and press m to unmute. You also might have to increase the volume.

HTH,
tigaente

1 Like

Have you tried to unmute the Headphone channel and increase its volume?

Also, can you please press F6 in alsamixer? That gives you a list of soundcards.

Yes but it didnt helped

Ok… I did some googling on this and it seems that other people have had this issue as well. For some it helped to use pavucontrol and set HDMI as the output channel. You might have to install pavucontrol through pacman or pamac first.
In the Arch forum, I could also find this post that might help: [SOLVED] Intel HDMI audio - no sound / Newbie Corner / Arch Linux Forums