Last year my screen broke and since then I've been using it as a "halftop", without the screen. So I took the screen off. It looks like a Commodore now. Kind of neat. I never bothered replacing the screen due to the extreme difficulty of doing so and sourcing one, and because I strongly suspect the backlight assembly is on the motherboard itself and that it might've shorted, as when I took the screen out I saw the antenna for my internal Wi-Fi card was FUBAR (wire shielding stripped and touching the display cables). The Wi-Fi card also doesn't work on any computer anymore. Anyway...
If the BIOS are set to "MSHybrid", the BIOS (and any non-OS menus, like Advanced Startup, GRUB, etc.) do not output to an external screen. Just an OS. Inside the OS, I see that the dedicated GPU, an RTX 2070 Super, is clearly the only one being used, proper behavior for HDMI/USB-C screen out. Intel HD Graphics do appear as an option, but nothing defaults to it, even mono-GPU games or programs from decades ago. The RTX 2070 Super is the dominant one.
If I set the BIOS to "Discrete", the BIOS (and any non-OS menus, like Advanced Startup, GRUB, etc.) DO output to an external screen. However the OS will not. Using TeamViewer, I can see see things, and that the OS doesn't even recognize there's actually a GPU! It only uses Microsoft's basic display driver (and only via TeamViewer), because it literally does not see a GPU, at all.
To my knowledge this feature I am describing is called the "MUX switch"?
My BIOS version, reported by the CMD command "wmic bios get smbiosbiosversion":
SMBIOSBIOSVersion
1.07.07LS1
The main BIOS screen looks kind of like this: https://slimbook.com/en/blog/guides-2/post/como-entrar-en-bios-katana-kde-bios-v2-insydeh20-141
I have tried output via USB-C and HDMI. Same results for both "MSHybrid" (Integrated) and "Discrete" (Dedicated) options. Is there any way to fix this?
