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Here we are going again In this topic i wrote what all work, but not. HDMI out is completely not working. Not detect no one devices (4 TV, and monitor 4k) Solved: wrong model choice in SMBIOS: 14.3 , changing to 14.1 fixed HDMI Out. But now i can't get 4k resolution, only 2k. What i missed in config ? May be it is by 1536mb on HD620, not 2048? Here is config: 7480-no-hdmi_conf.zip

I have a dell e6230 laptop with Catalina 10.15.6 from time to time I have problems with the video there are times when it has movement take the efi folder of this page How can I solve it also when starting I get a panic error? sorry for my english i am latin EFI.zip