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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)



On Fri, Sep 11, 2009 at 08:07:54AM -0700, Boris Derzhavets wrote:
> Out of ideas how to setup serial console on Ubuntu 9.04 for vanilla kernel.
> 
> title vmlinuz-2.6.31-rc8 Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
>     kernel  /vmlinuz-2.6.31-rc8  root=/dev/sdc2  ro com1=9600,8n1 
> console=com1 console=ttyS0 
>     initrd  /initrd-2.6.31-rc8.img
> 
> doesn't work.
> 
> Googling provides outdated information. (RH 7.2, Suse 10.2)
> It just crashes grub.
> 

serial console setup for normal Linux kernel (non-xen):

vmlinuz root=whatever ro console=tty0 console=ttyS0,9600n8

That should work if it's a normal onboard serial port.

If that doesn't work then try with "console=ttyS0,9600", 
which enables flow control.

Read more here:
http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-kernel.html

-- Pasi

> Boris.
> 
> 
> 
> --- On Fri, 9/11/09, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> 
> From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> 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>
> Date: Friday, September 11, 2009, 9:38 AM
> 
> On Fri, Sep 11, 2009 at 05:56:56AM -0700, Boris Derzhavets wrote:
> > The most recent 2.6.31 built via Jeremy's Git Repos loads as vanilla on
> > top of Ubuntu 9.04 Server.
> 
> Boris,
> 
> Let me specific. Please boot up without Xen, the kernel
> that was built on Wed Sep 9 16:02:46 MSD 2009(2.6.31-rc8), and use
> the serial console.
> 
> Using the vanilla kernel does not help me. I need to understand what is 
> different when you boot 2.6.31-rc8 under Xen and without Xen. Comparing
> it to a 2.6.31 is not helping.
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
> 
> 
> 
>       
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> http://lists.xensource.com/xen-devel


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