From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ondrej Zary Subject: Debugging MSI EX600 suspend to RAM Date: Thu, 18 Oct 2012 11:27:29 +0200 Message-ID: <201210181127.29257.linux@rainbow-software.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-1-out2.atlantis.sk ([80.94.52.71]:55119 "EHLO mail.atlantis.sk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754218Ab2JRJ1l (ORCPT ); Thu, 18 Oct 2012 05:27:41 -0400 Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Cc: linux-pm@vger.kernel.org Hello, I got a MSI EX600 laptop in my hands. These are famous for not working suspend to RAM in Linux (there are bug reports all over the web). It suspends fine but when resuming, the power LED comes on (and also HDD LED) but nothing more. After a couple of seconds, power turns off for a few seconds. Then it turns back on but hangs with blank screen. It needs a power cycle to boot again. All tests in /sys/power/pm_test pass without any problems. PM_TRACE seems to be unable to detect anything - RTC date/time is not changed upon failed resume and kernel log does not contain any "hash matches" lines. It probably hangs very early in the resume process. Or maybe even in the BIOS? There are no serial ports, only USB and firewire. What can I do more to debug it? -- Ondrej Zary