linux-kernel - Re: 2.6.31: booting on a PIII Celeron?

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Message-ID: <20090929160312.GA14405@elf.ucw.cz>
Date:	Tue, 29 Sep 2009 18:03:12 +0200
From:	Pavel Machek <pavel@....cz>
To:	Michael Tokarev <mjt@....msk.ru>
Cc:	Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.31: booting on a PIII Celeron?

Hi!

>>> So the celeron machine lacks "apic" flag.  And in my
>>> kernel config, apic is enabled:
>>>  CONFIG_X86_LOCAL_APIC=y
>>>  CONFIG_X86_IO_APIC=y
>>> (but not on the command line like apic=force)
>> try 'noapic nolapic' to see if it helps?
>
> Neither (nor both) changes anything.  It just reboots
> instantly right after "Loading initrd..." message from
> the bootloader.

Ok, you may want to try bisection...

> Ok, one more thing to mention.  2.6.31 introduced a
> somewhat annoying feature, -- the screen (console)
> blinks at the very start of the boot process (I mean
> text mode, no any framebuffers or the like).  Here,
> the screen blinks as usual for .31, I can see everything
> back including that "Loading initrd" line, and only
> after this the system reboots.  No more messages
> gets printed, including "kernel command line:",
> "Initializing cgroup subsys" or "Linux version ...".
> I switched CPU clock to 200MHz (minimum clock rate
> this motherboard supports using jumpers) and I can
> see the whole thing like in slow motion.

Hmm, can you try enabling earlyprintk?

									Pavel

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