Date: Fri, 18 Nov 2005 23:05:37 -0600
From: Robert Hancock <hancockr@shaw.ca>
Subject: Re: Compaq Presario "reboot" problems
In-reply-to: <59X9C-2Va-9@gated-at.bofh.it>
To: linux-kernel <linux-kernel@vger.kernel.org>
Message-id: <437EB2A1.10905@shaw.ca>
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linux-os (Dick Johnson) wrote:
> 
> With Linux-2.4.26 I reported that if a Compaq gets rebooted while
> running Linux-2.4.26, it will not be able to restart Windows 2000.
> It cam restart Linux fine. Today, I tried the same thing with
> Linux-2.6.13.4. It fails, too.
> 
> The symptoms are that you just "reboot" Linux. When the GRUB loader
> comes up, I select my Windows-2000/professional. That M$ Crap comes
> up to where it's just about to start the high-resolution screen.
> Then it stops forever, no interrupts, no nothing. I need to disconnect
> power and remove the battery to recover.
> 
> It appears as though Linux is still restarting as a "warm boot",
> rather than a cold boot (in other words, putting magic in the
> shutdown byte of CMOS) so the hardware doesn't get properly
> initialized. Would somebody please check this out. When changing
> operating systems, you need a cold-boot.

This sounds more like the BIOS is not properly reinitializing all 
hardware and expects it to be in some state which Linux does not leave 
it in. BIOS update available?

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

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