On Sun, Nov 24, 2013 at 12:40:31PM -0800, Paul B. Henson wrote:
> On Sun, Nov 24, 2013 at 09:54:41AM +0100, Sebastian Benoit wrote:
> 
> > in the bios, you can set the onboard serial ports irq to some higher value.
> > that way, the ipmi console will become com0.
> > 
> > (not tried on that board, only on newer supermicros that dont have the
> > serial port on the outside anymore).
> 
> Hmm, no joy. I tried disabling both the physical serial ports, but the
> SOL port stayed on the com2 ioport/irq. That completely broke the
> bootloader, as it showed only com0, and when I told it to use it
> presumably it tried the standard com0 ioport/irq. I tried setting the
> bios to use the com1 ioport/irq for com0 and the com2 for com1 in the
> hopes the SOL port would notice their was a conflict and use something
> else, but nope, it still didn't work. I don't see anyway to set the SOL
> port ioport/irq, I fear it's hardcoded.
> 
> It's weird that the kernel uses com2 as a console fine but then userland
> borks it. The SOL port works fine as a console when I boot linux on the
> box, so either there's an openbsd bug with it or linux must be
> implementing some workaround for a problem.
> 
> Thanks anyway...

Supermicro IPMI is crap. Use normal serial console and add a power strip
which you can manage via ethernet to poweroff/power cycle the server.

jirib

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