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Date:      Thu, 31 Aug 2000 13:42:50 -0700 (PDT)
From:      John Baldwin <jhb@pike.osd.bsdi.com>
To:        Peter Wemm <peter@netplex.com.au>
Cc:        alpha@FreeBSD.ORG
Subject:   Re: Console problems on alpha with -current
Message-ID:  <200008312042.NAA04694@pike.osd.bsdi.com>
In-Reply-To: <200008302317.e7UNHtG96193@netplex.com.au> from Peter Wemm at "Aug 30, 2000 04:17:55 pm"

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Peter Wemm wrote:
> John Baldwin wrote:
> > Mike Smith has suggested that the kenv pointer might not be initialied
> > before the console init on the alpha for some reason...
> 
> No, the more I think about it, the more I think something like this is
> happening:
> 
> i386:
> console selection is done before any output using the low level console
> probe routines.
> 
> alpha:
> the SRM console is being used until much later, and when sc0 comes up without
> vga0 having probed already, then things are breaking.
> The difference between static vs. dynamic hints is that loader(8) is sorting
> the hints (sc0 comes before vga0) while static hints are preserving the order.
> 
> In alpha/conf/GENERIC.hints:
> hint.vga.0.at="isa"
> hint.sc.0.at="isa"
> 
> I'll bet that reversing these two in a static hints kernel will duplicate
> the problem that people see with dynamic hints.
> 
> Can somebody with a vga console alpha confirm/deny this?

Bzzzzt.  The console works ok with them reversed, although I get a
machine check exception kernel panic during boot. :P

> Cheers,
> -Peter
> --
> Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
> "All of this is for nothing if we don't go to the stars" - JMS/B5

-- 

John Baldwin <jhb@bsdi.com> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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