Question Gigabyte ga-h16n-usb3 motherboard - HDMI output at startup/boot/BIOS access - no output

[wb0gaz]

I just converted from VGA to HDMI monitor for my Gigabyte GA-H61N-USB3 motherboard (and computer). The motherboard has VGA, DVI and HDMI outputs. I am using integrated graphics (Intel 3000?) with an Intel I5 series CPU.


I discovered the HDMI output does not become active until the OS (either Windows or Linux) is up and running. In the time from power-up until the OS is up and running, HDMI output is off (no signal detected by monitor.)


This prevents (1) interaction with the BIOS screens, and (2) interaction with the (GRUB) OS selection menu.


The motherboard BIOS is version (F1) but from what I can tell on Gigabyte website, the successive versions (up to F7) do not mention this issue.


The monitor is an AOC 27" 4K monitor with two HDMI inputs - the monitor can be configured for Auto, Input #1 or Input #2; I have tried Auto or setting the input to match the machine - neither addresses this issue.


If I attach both VGA and HDMI monitors to the motherboard, the VGA monitor operates at power-up, while the HDMI monitor does not operate until the OS begins running. Although I could work around this for BIOS updates, it is a show-stopper for support of GRUB (which allows me to select OS at startup time.)


Thanks for any advice!


Dave

 

[JohnBonhamsGhost]

possibly the BIOS has an option to decide the primary output and it needs to be set to HDMI.

 

[wb0gaz]

Thanks for the suggestion --- I looked at the BIOS settings at the time, and the only settings related to video were related to having a separate GPU. However, that said, perhaps these BIOS settings impact the HDMI output, so I'll experiment there. If I find a fix, I'll post back, else assume I'm still in need of guidance!

Dave