I cannot understand why I am getting no output on com3 post-install of 7.5.
I connect to the USB-serial port, and I can see 7.5 boot of USB, and I can go through the install. No problem. During install, I say "yes" to, do you want to default to com3. But after the reboot, I see no output after "switching to com3". Looking at the dmesg, com3 is definitley the right one: # dmesg | fgrep com dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat com3 at acpi0 FUR0 addr 0xfedc9000/0x1000 irq 3: ns16550, no working fifo com3: console And, if I check, the installer has definitley made the required chanages: # cat /mnt/etc/boot.conf stty com3 115200 set tty com3 If I delete those lines from boot.conf (i.e. echo ''> /mnt/etc/boot.conf ), I can see the boot messages scroll by, but of course I cannot get the keyboard prompt for login. Where am I going wrong ?