linux-kernel - Re: EeePC 900 reboots/hangs when using using perf -a -f -g

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Message-ID: <20100912112105.GA28420@sucs.org>
Date:	Sun, 12 Sep 2010 12:21:05 +0100
From:	Sitsofe Wheeler <sitsofe@...oo.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Corentin Chary <corentincj@...aif.net>,
	fweisbec <fweisbec@...il.com>
Subject: Re: EeePC 900 reboots/hangs when using using perf -a -f -g

On Sun, Sep 12, 2010 at 12:57:07PM +0200, Peter Zijlstra wrote:
> 
> Bisect it?

.35 shows the same issue (although I didn't recompile my perf binary). I
don't know if this is a regression - it might always have been there...

> Does .35 work? If so, you could try it with the .35 version of
> eeepc-laptop driver to see if its something specific to that driver, or
> if its something we did to the stack unwinding code.
> 
> Most curious issue..

It certainly is weird. When the machine reboots I notice that the
backlight is not at its normal level as if something was dimming the
display (perhaps X turns off the backlight and turns off the display
when powersaving these days?). As the only backlight driver on my system
is in eeepc-laptop that's why I removed it.

-- 
Sitsofe | http://sucs.org/~sits/
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