From: Michael Buesch <mb@bu3sch•de>
To: linuxppc-dev@ozlabs•org
Subject: Powerbook hard shutdown after boot if it's hot
Date: Thu, 14 Jun 2007 17:39:12 +0200 [thread overview]
Message-ID: <200706141739.12754.mb@bu3sch.de> (raw)
Hi,
I have a strange problem that my Powerbook shuts down hard
right after boot, if the machine is hot.
For example, if I compile a kernel and then want to reboot
into it, it will shutdown the machine right after userspace
is booted. Cooling down the machine will fix the issue.
I first thought this might be a problem with the adt746x
chip driver (thermostat). But this turns out to not be
the case. I disabled the module (put return 0; early into
the module_init function), but the problem still exists.
I'm not sure how to debug this, as I don't see what's
going on. I tried to boot with init=/bin/bash. It will
boot into the shell but shutdown hard after 1 or 2 seconds.
It seems like there is some timer hitting in right after
userspace is up and running (some workqueue?). Strange is
that it _only_ shuts down the machine when it's hot
and it _only_ does this right after boot. If it survived
the first few seconds after boot, it's rock-stable and
it won't show any problems when getting hot (will drive
the fans correctly, etc etc...)
Any idea how to debug this?
--
Greetings Michael.
next reply other threads:[~2007-06-14 16:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-14 15:39 Michael Buesch [this message]
2007-06-14 16:41 ` Powerbook hard shutdown after boot if it's hot Gabriel Paubert
2007-06-15 0:18 ` Segher Boessenkool
2007-06-16 0:51 ` Benjamin Herrenschmidt
2007-06-16 13:04 ` Michael Buesch
2007-06-16 13:06 ` Michael Buesch
2007-06-16 13:42 ` Segher Boessenkool
2007-06-16 13:40 ` Segher Boessenkool
2007-06-16 14:09 ` Michael Buesch
2007-06-16 16:10 ` Brad Boyer
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