No sound when connected to HDMI

[MrNoob82]

Hi all, thanks for reading.

The issue is that when I connect the HDMI cable to my laptop (spec in my signature) there is no sound coming out.
HDMI audio is selected and is also selected in PulseAudio Volume Control. If I am using anything with sound, you get the sound bar moving about, but nothing comes out of the speakers.

I have also tried HDAJackretask, but this makes no difference either, Everything else works fine, as far as I can tell.

inxi -Fxz results below:

System: Host: jon-HP-Notebook Kernel: 4.8.0-53-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.4.6 (Gtk 2.24.30) Distro: Linux Mint 18.2 Sonya
Machine: System: HP product: HP Notebook v: Type1ProductConfigId
Mobo: HP model: 81F9 v: 67.40 Bios: Insyde v: F.24 date: 06/07/2017
CPU: Dual core AMD A12-9700P RADEON R7 10 COMPUTE CORES 4C+6G (-HT-MCP-) cache: 2048 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 9980
clock speeds: max: 2500 MHz 1: 1600 MHz 2: 1600 MHz 3: 1300 MHz
4: 1600 MHz
Graphics: Card: Advanced Micro Devices [AMD/ATI] Carrizo bus-ID: 00:01.0
Display Server: X.Org 1.18.4 drivers: ati,amdgpu (unloaded: fbdev,vesa,radeon)
Resolution: 1280x720@60.00hz
GLX Renderer: Gallium 0.4 on AMD CARRIZO (DRM 3.3.0 / 4.8.0-53-generic, LLVM 4.0.0)
GLX Version: 3.0 Mesa 17.0.7 Direct Rendering: Yes
Audio: Card-1 Advanced Micro Devices [AMD] Device 157a
driver: snd_hda_intel bus-ID: 00:09.2
Card-2 Advanced Micro Devices [AMD/ATI] Kabini HDMI/DP Audio
driver: snd_hda_intel bus-ID: 00:01.1
Sound: Advanced Linux Sound Architecture v: k4.8.0-53-generic
Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 01:00.0
IF: enp1s0 state: down mac: <filter>
Card-2: Realtek RTL8723BE PCIe Wireless Network Adapter
driver: rtl8723be port: 2000 bus-ID: 02:00.0
IF: wlo1 state: up mac: <filter>
Drives: HDD Total Size: 2000.4GB (1.6% used)
ID-1: /dev/sda model: ST2000LM003_HN size: 2000.4GB temp: 26C
Partition: ID-1: / size: 846G used: 24G (3%) fs: ext4 dev: /dev/sda6
ID-2: swap-1 size: 8.02GB used: 0.00GB (0%) fs: swap dev: /dev/sda7
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 46.0C mobo: 20.0C gpu: 0.0
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 233 Uptime: 16 min Memory: 1565.4/7511.0MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35

Can anyone point me in the right direction?

I can still use on board speakers, just maxed out and it doesn't sound great as a result.

Many thanks!

[OunceofCommonSense]

I solved in this way:
sudo gedit /etc/pulse/default.pa
commented this line --> load-module module-switch-on-port-available
Saved
Switched my headphone jack from front-panel to back motherboard port and then reboot. Now it works fine.

[MrNoob82]

I tried this, but the line you said to add was already there. Also, I'm not sure how to switch the headphone jack to outputting to the HDMI port...

[Spearmint2]

I tried this, but the line you said to add was already there. Also, I'm not sure how to switch the headphone jack to outputting to the HDMI port...

headphone is analog, HDMI is digital sound.

[kukamuumuka]

HDMI ... sounds familiar.
viewtopic.php?f=48&t=254399&p=1371762#p1371505