am303737 Posted June 4, 2020 Share Posted June 4, 2020 Hi, I have tried to connect my HDMI monitor to my Laptop and here are the problems I faced: 1- The HDMI monitor is connected but completely black. 2- The HDMI monitor audio is some how working but as you can see in the included screenshot I can't control the volume directly from the system. 3- The HDMI monitor appears black ONLY when I uncheck "Mirror Displays" or in other words the screen mirroring works. 4- My graphics card is read as 2048Mb and I couldn't change that, because I know it can cause problems. My specs: Dell 5570 macOS Catalina.10.15.4 i5-8250U AMD 530 / intel U620 8GBs ram 240GBs SSD 1Tb HDD HDMI monitor specs: normal Samsung 32" TV debug_31225.zip Link to comment Share on other sites More sharing options...
am303737 Posted June 13, 2020 Author Share Posted June 13, 2020 So it has been 9 days and no replays and I still don't know the solution Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted June 13, 2020 Moderators Share Posted June 13, 2020 1) What's the resolution of your external TV, if it's 4K, you might have to increase the DVMT 2) That's how MacOS work, you don't control volume from the system for HDMI audio, you control it from the external display. However that is an app call MonitorControl that might work. 3) The graphics card reading 2048MB I believe is just cosmetics, that can be changed in the Config file easily. Link to comment Share on other sites More sharing options...
am303737 Posted June 13, 2020 Author Share Posted June 13, 2020 Thanks for your response ♥ Quote 1) What's the resolution of your external TV, if it's 4K, you might have to increase the DVMT it is a normal 1080p display. Quote 2) That's how MacOS work, you don't control volume from the system for HDMI audio, you control it from the external display. However that is an app call MonitorControl that might work. I will try it ASAP. Quote 3) The graphics card reading 2048MB I believe is just cosmetics, that can be changed in the Config file easily. I thought that, too; because it didn't cause any graphical error except that weird HDMI thing. Note: I used Mojave on the same machine 2 months ago, and I had not any issues with the same HDMI TV monitor Link to comment Share on other sites More sharing options...
am303737 Posted June 25, 2020 Author Share Posted June 25, 2020 so it has been 12 days and still no replay Link to comment Share on other sites More sharing options...
Administrators Hervé Posted June 25, 2020 Administrators Share Posted June 25, 2020 I know... really poor service for the price you paid! Someone ought to be fired. Link to comment Share on other sites More sharing options...
am303737 Posted June 25, 2020 Author Share Posted June 25, 2020 You have helped me to solve many problems and I have to thank you for your help. Link to comment Share on other sites More sharing options...
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