On the C34F791 monitor, connected to a Surface Pro 3/4 (via mini DP) via DP on the monitor, or via HDMI on the monitor - audio is often "lost" even though enabled as the default audio device in Windows. It seems to happen only after the laptop is left sitting on for awhile.
A power cycle of the monitor is the only thing that brings the audio back.
Still an issue - I have to power cycle it all the time. Tried with another Surface Pro 3 and 4, still happens. Tried a new miniDP to HDMI cable and miniDP to DP cable, still happens.
Did anyone ever found any solution to this? I have had the same issue on my C34J791 for a very long time. Mine is connected to a Windows desktop computer. I found out that's "Scan for hardware changes" in the Device Manager fixes the issue. I.e. the lost audio output for the C34J791 is returned. No need for unplugging or power cycle. How ever, leaving the computer for a while will lose the audio again... Very frustrating.
This thread has 2310 views as of 01-21-2022, and other users confirming they have the same issue. What are the chances mine is just defective vs. this is a firmware issue that Samsung needs to correct? As much fun as it would be to waste everyone's time and money taking it to a service center .... I've got better things to do than be an un-paid beta tester for Samsung products. If anyone cares to share this with Samsung management, the poor handling of this issue has only resulted in one thing: I don't buy Samsung monitor's anymore.
