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No sound after resuming computer from standby/sleep mode ...
https://www.tenforums.com/sound-audio/153905-no-sound-after-resuming-computer-standby-sleep-mode.html#:~:text=OK%20that%20says%20you%20are%20using%20the%20HDMI,to%20High%20Performance%20and%20see%20if%20it%20helps.
No HDMI Audio after resume from sleep\standby Windows 10 ...
https://answers.microsoft.com/en-us/windows/forum/all/no-hdmi-audio-after-resume-from-sleepstandby/1b54b2db-4d37-40a6-b07e-40283f49f4e4
The issue could be because of incompatible sound drivers on the computer. I suggest you to download the sound drivers and install them in compatibility mode and check. Please follow the below link to know how to install the drivers in compatibility mode:
HDMI sound disappeares after my monitor goes to sleep …
https://www.nvidia.com/en-us/geforce/forums/game-ready-drivers/13/344951/hdmi-sound-disappeares-after-my-monitor-goes-to-sl/
When my display goes to sleep after a while, in Windows the Nvidia audio device disappears, and after waking the display up, there's no sound. The only way to solve it is to open Device Manager and hit "Scan for hardware changes". It forces Windows to …
No HDMI Audio after resume from sleep\standby - Microsoft ...
https://answers.microsoft.com/en-us/windows/forum/all/no-hdmi-audio-after-resume-from-sleepstandby/1af4cd8c-1ed7-48e5-9042-b2c7caacba85
Original Title: No HDMI Audio. Windows does not recognize the HDMI audio after recovering from standby mode. The Audio comes back,through HDMI, after reboot. Here is a workaround I found to this problem: A) set your PC to sleep and power off your HDMI screen B) when resuming: wake up your PC, wait about 5 seconds and then power on your HDMI screen
HOW TO - Fix Loss of HDMI Audio After Resume from Sleep ...
https://forum.kodi.tv/showthread.php?tid=251833
This tutorial is to address the loss of sound caused by the disconnection of an audio device after Windows resumes from Sleep. This commonly occurs when display and audio devices are connected via HDMI to a PC. Although the device is connected, Windows believes it has been turned off and sound is cut-off.
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