Funny, i was trying to get the same working ..doing some grub magic myself.
I now have the following:
- normal console on tty1
- serial console on hvc0
- All log output from hypervisor and kernel on both consoles
- Login on normal tty1 console
- Xen hypervisor console (3x ctrl-a still required) on the serial console
This is the grub magic i use (don't know if it's correct, but it works, so
therefore it must be ;-) )
title Xen-3.4.2-amd64 / Debian GNU/Linux, kernel
kernel /xen-3.4.2.gz dom0_mem=768M com1=115200,8n1 console=com1,vga
module /vmlinuz-188.8.131.52 root=/dev/mapper/serveerstertje-root ro
pci=nomsi console=hvc0 console=tty1 earlyprintk=xen
And relevant part inittab:
# /sbin/getty invocations for the runlevels.
# The "id" field MUST be the same as the last
# characters of the device (after "tty").
# Note that on most Debian systems tty7 is used by the X Window System,
# so if you want to add more getty's go ahead but skip tty7 if you run X.
1:2345:respawn:/sbin/getty 38400 tty1
2:23:respawn:/sbin/getty 38400 tty2
3:23:respawn:/sbin/getty 38400 tty3
#4:23:respawn:/sbin/getty 38400 vcsa
#5:23:respawn:/sbin/getty 38400 tty5
#6:23:respawn:/sbin/getty 38400 tty6
h0:12345:respawn:/sbin/getty -L hvc0 115200 vt100
Tuesday, December 8, 2009, 9:49:18 PM, you wrote:
> Sorry for the possibly silly question. No luck
> with various googling.
> I have a Dell laptop, booting xen-unstable, dom0 kernel
> is the linux-2.6.18-xen.hg from xenbits but running in
> a full RHEL5u3 boot/environment. (X fails to
> come up properly on the laptop display, but I can
> access a full graphical virtual display via vnc.)
> I'd like to be able to access the Xen console from
> the laptop keyboard/display, e.g. to see Xen console
> output and to type ^A^A^A to get back and forth from
> Xen to dom0, and use debug keys to Xen console.
> Is this possible?
> If so, could you tell me what the magic grub parameters
> are, and any other changes inside the dom0 filesystem
> (e.g. /etc/inittab??)
> If not (I'm told keyboard input may be an issue), I
> can move cables and use the laptop serial port, but
> that's much more of a pain... and I tried it once
> without luck, probably not getting the grub magic
> correct (though I've gotten external console to work
> successfully on a different machine). Any suggestions
> or help on serial port configuration for a laptop
> would be appreciated then too.
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