Good morning, On Fri, Jun 12, 2026 at 8:30 PM Petre Rodan <[email protected]> wrote: > >
> Also, on my uefi amd64 if I simply set tty com0 (without changing anything > else) > the kernel no longer boots. I can't imagine how to debug this. > When you first boot and before the header line ">> OpenBSD/amd BOOTX64" or something similar, the very first line you should see "probing: pc0 mem[...]". pc0 is the default VGA+keyboard console. If the system has another viable option, I believe it would be listed here. Also, does dmesg show the device as com0 or some other com port? If I recall correctly, only pc0, and com0 to com3 will work as a console at boot. I have one device, my firewall, that has a built in serial. it is recognized as com0, so, set tty in boot.conf works. My laptop has a UART port that is exposed but it is recognized as com4 and the system will not boot if I try to use that as the console. Best, Dan
