linux-kernel - Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init

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Date:	Wed, 25 Jan 2012 00:33:17 -0200
From:	Rogério Brito <rbrito@....usp.br>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Edward Donovan <edward.donovan@...ble.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-kernel@...r.kernel.org,
	Márcia Coutinho de Brito <mcbrito@...il.com>,
	Ram Pai <linuxram@...ibm.com>, rui.zhang@...el.com
Subject: Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init

Hi there, Yinghai, Linus, Bjorn and others.

On Tue, Jan 24, 2012 at 23:55, Rogério Brito <rbrito@....usp.br> wrote:
> The next thing that I'm doing is recording a video of how the computer
> boots when that transparent sizing bridge patch is reverted, so that
> you can have that as a reference. Then, I will rip apart the ACPI
> stuff from the configuration of the kernel to see if it is ACPI that
> is getting in the way of something here.

I started ripping things apart, first with the whole ACPI subsystem,
then with PM, with sound and I noticed that things always hung with
the nvidia watchdog/TCO module. So, I disabled it and the boot doesn't
hang there anymore. In fact, it goes further, and, for the first time
since I got my mother's notebook, the nouveau module was loaded.

Unfortunately, it died with a kernel panic and didn't reach the point
of X firing up.

So, there is something fishy indeed with these things.

Still open to sugestions. I will now compile a vanilla kernel from
Linus's tree gradually putting things in, but from what I already
talked with Bjorn, I think that ACPI will be a barrier (and it is sad
that so many things *don't* work with ACPI disabled).

Regards,

-- 
Rogério Brito : rbrito@...e.usp.br,gmail.com} : GPG key 4096R/BCFCAAAA
http://rb.doesntexist.org : Packages for LaTeX : algorithms.berlios.de
DebianQA: http://qa.debian.org/developer.php?login=rbrito%40ime.usp.br
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