From: Ingo Molnar <mingo@elte.hu>
To: Mikael Pettersson <mikpe@it.uu.se>
Cc: hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com,
tglx@linutronix.de
Subject: Re: [REGRESSION] 2.6.24-rc1 fails to boot on a 486
Date: Mon, 29 Oct 2007 12:37:29 +0100 [thread overview]
Message-ID: <20071029113729.GA21412@elte.hu> (raw)
In-Reply-To: <200710290628.l9T6SDpo012530@harpo.it.uu.se>
* Mikael Pettersson <mikpe@it.uu.se> wrote:
> On Sun, 28 Oct 2007 21:33:02 -0700, H. Peter Anvin wrote:
> > Mikael Pettersson wrote:
> > > My old 486 fails to boot with the 2.6.24-rc1 kernel.
> > > Grub loads it, 4 lines of text appear but not the kernel's
> > > "Linux version <blah> greet", and the machine reboots.
> > > Double-checked with a serial console: nothing appears
> > > before it reboots.
> >
> > What four lines of text?
>
> They're impossible to capture because they're only visible on the VGA
> screen for like 0.2 seconds before the machine reboots and the screen
> is blanked; they don't show up on the serial console.
the way i debug these is to take a digital camera and make a movie of
the bootup, then check the movie frame for frame.
admittedly it's a pretty sick method.
Ingo
next prev parent reply other threads:[~2007-10-29 11:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-29 6:28 [REGRESSION] 2.6.24-rc1 fails to boot on a 486 Mikael Pettersson
2007-10-29 11:37 ` Ingo Molnar [this message]
2007-10-29 12:42 ` Gabriel C
2007-10-29 13:47 ` Thomas Gleixner
2007-10-29 15:57 ` H. Peter Anvin
2007-10-29 16:13 ` Thomas Gleixner
-- strict thread matches above, loose matches on Subject: below --
2007-10-30 14:07 Mikael Pettersson
2007-10-29 6:31 Mikael Pettersson
2007-10-29 0:05 Mikael Pettersson
2007-10-29 4:33 ` H. Peter Anvin
2007-10-29 4:34 ` H. Peter Anvin
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