Audio Doesn't Work When Monitor Is Connected Through HDMI to an Intel® Arc™ A770 Graphics Device

Audio issue with Intel® Arc™ A770 Graphics when connected via HDMI. The audio is disabled by default when starting the system. The speaker icon to change audio settings in the lower right tray is crossed with a red line. Clicking it causes Windows to go into diagnostic mode, but it fails to identify the problem with the device.

• Test another HDMI port.
• Test different displays.
• Test different cables.
• Update BIOS to the latest version.
• Update Windows to the latest version.
• Update monitor firmware.
• Uninstall the graphics driver using Display Driver Uninstaller (DDU). For guidance, How to Use the Display Driver Uninstaller (DDU) to Uninstall an Intel® Graphics Driver.
• Update the graphics to the latest version on Download Center. For guidance, How to Install an Intel® Graphics Driver in Windows® 10 & Windows 11.