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xen-users
[Xen-users] Re: Always losing the console output after "Scrubbing free R
Still losing the console output. I now used the 2.6.18-xen that comes
from http://www.xen.org/products/xen_source.html instead of the Debian
kernel and I still have this problem, no change.
Could somebody give my questions below a quick pass? I'm really not
sure what I'm missing here.
Thanks
Martin
Martin Cracauer wrote on Mon, Sep 07, 2009 at 10:27:26AM -0400:
> Hello.
>
> I have continued problems with an initial Xen run. After "Scrubbing
> free RAM" the monitor goes blank (existing output is erased) and it
> stays that way. The machine doesn't come up pingable, it just goes
> possum.
>
> Thinking the console output is redirected, I have literally tried all
> variants and combinations of passing parameters to the Linux kernel
> that I'm loading in there. Everything related to console=, xencons=,
> novidmodechange(?) and a few more. Not only didn't it solve the
> problem, there was no change at all, so I think I am on an entirely
> wrong path here.
>
> Setup:
> - pxelinux diskless boot
> - Debian's build of Xen 3.4 hypervisor
> - Debian's kernel vmlinuz-2.6.30-1-amd64 which explicitly says it has
> Xen support in (and matching initrd and all three of xen, kernel and
> initrd are loaded fine according to the output I see).
> - also tried my own 2.6.30.5 which also has about the same Xen options on (no
> initrd). Same results.
>
> The machine with the kernel provided boots fine with the diskless
> setup and local config when booted outside of Xen.
>
> label xen
> kernel mboot.c32
> append xen-3.4-amd64 dom0_mem=262144 noreboot console=vga --- \
> vmlinuz-2.6.30-1-amd64 console=tty0 console=hvc0 --- \
> initrd.img-2.6.30-1-amd64
> # append xen-3.4-amd64 dom0_mem=262144 noreboot --- \
> vmlinuz-2.6.30-1-amd64 console=tty1 xencons=tty1 ---
> initrd.img-2.6.30-1-amd64
>
> (backslashed line breaks only for mail, not in the file)
>
> The hardware is a Dual-Core Opteron socket 939 in a Via K8T800 board
> (Asus A8V-E) with some modern ATI graphics card.
>
> Questions:
>
> - let's say I use an entirely unsuitable kernel (no Xen) support, what
> exactly would the symptoms be?
>
> - is that hardware maybe unsupported? What are the symptoms if I have
> unsupported hardware? Are NVidia NForce chipsets better supported?
>
> What's the best way to proceed here? Should I build Xen and the Xen
> Linux kernel from your sources? Should I try different hardware?
> Serial console?
>
> Thanks a lot
> Martin
> --
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> Martin Cracauer <cracauer@xxxxxxxx> http://www.cons.org/cracauer/
> FreeBSD - where you want to go, today. http://www.freebsd.org/
--
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@xxxxxxxx> http://www.cons.org/cracauer/
FreeBSD - where you want to go, today. http://www.freebsd.org/
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