14.01.2022 17:27, Willem Jan Withagen wrote:
> Hi,
> 
> I was given these SMC h8DMT boards to experiment with.
> (For liquid cooling)
> 
> Theze are server board that normally go into twin board systems.
> 2 Opteron 2380 per board.
> 
> It sort of boots, and gets to:
>     Beasty loader
>     then booting the kernel after the spinner
>    prints the first few lines of boot output, like what compilers is used
>    and then output stops.
> 
> I guess that it thinks it needs to write the rest to either serial console
> or something else.
> 
> Does this sound familiar to anybody?
> What do I need to toggle to keep writing where it started?

Check it the system is capable of BIOS Legacy (CSM) mode booting instead of 
UEFI.
If so, try using old console driver "syscons" instead of default vt:
escape to loader prompt and do:

set kern.vty=sc
boot -v

Or, add to /boot/loader.conf:

kern.vty=sc

If UEFI is only option, try using default vt driver but with text mode instead 
of framebuffer:
hw.vga.textmode=1

Some of ACPI BIOS'es have bugs in ACPI Tables and there is workaround for the 
problem:

hw.vga.acpi_ignore_no_vga=1



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