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From: Daniel Braniss <danny@cs.huji.ac.il>
Subject: serial console problem with latest 9.2-stable
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Date: Fri, 11 Apr 2014 12:09:12 +0300
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Hi,
in /boot/device.hints I have:
	hint.uart.1.flags=3D0x10

and till about a week old kernel, I get the serial console ok.
with today=92s update, this is broken:
	the boot output stops after showing:
...
cpu15 (AP): APIC ID:  7
ioapic1: Changing APIC ID to 1
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 32-55 on motherboard

Freebsd/amd64 (rnd) (ttyu1)

Login:

and later, escape to debugger failes - i.e hitting \n~^B gets me =
nowhere.

from dmesg:

=85
ioapic1: Changing APIC ID to 1
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 32-55 on motherboard
kbd1 at kbdmux0
acpi0: <DELL PE_SC3> on motherboard

=85

so what is broken in kbdmux?

thanks,
	danny