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

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Message-ID: <20120113115946.GA10615@ime.usp.br>
Date:	Fri, 13 Jan 2012 09:59:46 -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>
Subject: Re: [Bug 41722] Clevo M5X0JE hangs in ACPI init

Dear Yinghai,

On Jan 11 2012, Yinghai Lu wrote:
> On Tue, Jan 10, 2012 at 11:04 PM, Rogério Brito <rbrito@....usp.br> wrote:
> > On Tue, Jan 10, 2012 at 03:07, Yinghai Lu <yinghai@...nel.org> wrote:
> >>   git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
> >> for-pci2
> >>
> >> also please boot with "debug ignore_loglevel"
> >
> > Grabbing it right now. Will report it after I get some sleep (5AM here).
> 
> please try attached patch, it will fix one bios wrong setting.

Should I use this patch agains which tree?

Right now, I have Linus's tree, yours (cited above) and I am, up to now,
I had been compiling everything from Linus's v3.2 tag: both a vanilla
kernel, as asked by Bjorn and with the patch that I mentioned to Linus ("the
one that makes things boot").

If it applies (and newer kernels don't have things which your patch needs),
I will keep working with Linus's v3.2 tag.

When I compiled from your branch for-pci2 from linux-yinghai.git (without
any extra patches), it *did* boot, but noticed one thing weird: using htop
and in single user mode, it reported 100% of CPU in use. With regular top, a
more fine grained output revealed that no processes were using the CPU, but
that almost all of the time was spent in kernel mode.

Anyway, as you asked, I put the log of what I see at

    http://www.ime.usp.br/~rbrito/linux/clevo/2012-01-13-0951-yanghai-for-pci2-branch/

> >> BTW, did you try boot with "pci=use_crs" and not with "acpi=off" ?
> >
> > I tried, but I got a hang (both with Linux---many versions---and with
> > FreeBSD). With Linux I get:
> >
> >  http://www.ime.usp.br/~rbrito/linux/clevo/boot-without-acpi-off.jpg
> >
> 
> need to work on that later.

Thanks for your (everybody else's) kindness/helpfulness with these multiple
issues.

Thanks,

-- 
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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