From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vs166246.vserver.de (static-ip-62-75-166-246.inaddr.intergenia.de [62.75.166.246]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 169E5DDF04 for ; Fri, 15 Jun 2007 02:09:20 +1000 (EST) Received: from t5e70.t.pppool.de ([89.55.94.112] helo=powermac.local) by vs166246.vserver.de with esmtpa (Exim 4.50) id 1HyrRz-0002zV-LF for linuxppc-dev@ozlabs.org; Thu, 14 Jun 2007 17:41:31 +0200 From: Michael Buesch To: linuxppc-dev@ozlabs.org Subject: Powerbook hard shutdown after boot if it's hot Date: Thu, 14 Jun 2007 17:39:12 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: <200706141739.12754.mb@bu3sch.de> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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.