linux-kernel - Re: 2.6.38.3 and 2.6.39-rc4 hangs after "Booting the kernel" on quad Pentium Pro system

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Message-Id: <201104232036.02758.chris@csamuel.org>
Date:	Sat, 23 Apr 2011 20:35:59 +1000
From:	Chris Samuel <chris@...muel.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.38.3 and 2.6.39-rc4 hangs after "Booting the kernel" on quad Pentium Pro system

On Sat, 23 Apr 2011 07:35:36 PM Alan Cox wrote:

> On Sat, 23 Apr 2011 10:16:18 +1000
>  Chris Samuel <chris@...muel.org> wrote:
> > Syt mae Alan! ;-)
> 
> G'day ;)

Touché!

> > That would explain an awful lot..
> 
> Could be something has disturbed its memory detect or could be a
> bug in the PPro memory quirk.
> 
> If you boot with mem= and force the memory size what happens ?

Same behaviour I'm afraid, hangs claiming 16MB of LOWMEM. :-(

> > INT 15h = f000:f859 DOS RAM: 638K (0x9f800) INT 12h: 638K
> > (0x9f800) INT 15 88: 0x3c00 (15360K) INT 15 E801: 0x0000 (0K)
> > 0x0000 (0K)
> 
> Ah.. do you have a BIOS setting called something like OS/2
> compatibility ?

That's the really odd thing, I am yet to find a way to access
the BIOS settings on this beast. I've tried the usual DEL, F2
and F1 with no success and there is no prompt I've ever seen
to offer access to one.  I do have a ZIP file that contains
the last BIOS upgrade for it that was released so I'll see if
I can make that bootable and see if that reveals any options.

> > Hope life is still good in Abertawe!
> 
> This part of the world has changed rather a lot. Not sure
> you'd recognize half of it.

I can imagine, it's been a while since I've been back in
South Wales!

Take care,
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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