From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Sunday, September 13, 2009, 7:31 AM

On Sun, Sep 13, 2009 at 04:23:35AM -0700, Boris Derzhavets wrote:
> title Xen Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
> kernel /xen-3.4.gz dom0_mem=1024M loglvl=all guest_loglvl=all com1=9600,8n1 console=com1
> module /vmlinuz-2.6.31-rc8 ro root=/dev/sdc2 console=hvc0 earlyprintk=xen
> module /initrd-2.6.31-rc8.img
>

kernel /vmlinuz-2.6.31-rc8 ro root=/dev/sdc2 console=ttyS0,9600

That should definitely work for baremetal kernel. Does your kernel have
serial support built-in?

Are you sure your serial port settings on the other computer are ok?
Try using "minicom" and playing with the different flow control
settings... (no flow control / hardware flowcontrol / xon,xoff)

-- Pasi

>
> --- On Sun, 9/13/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>
> From: Pasi Kärkkäinen <pasik@xxxxxx>
> Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
> To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
> Date: Sunday, September 13, 2009, 6:41 AM
>
> On Sun, Sep 13, 2009 at 03:33:40AM -0700, Boris Derzhavets wrote:
> > > No need to setup serial console, unless the kernel crashes..
> > Vanilla 2.6.31-rc8 crashes.
>
> OK.
>
> > >If it crashes, try to use only "console=ttyS0,blah", ie. drop "console=tty0"
> > Dropped, still no luck.
> >
>
> Hmm.. that's weird.
>
> Can you paste again the grub entry for Xen with serial console?
>
> -- Pasi
>
> > Xen Serrial Grub entry works fine.
> >
> > Boris.
> >
>
>
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