From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: s2ram on Lenovo X300 is broken Date: Mon, 27 Apr 2009 01:12:28 +0200 Message-ID: <200904270112.28813.rjw@sisk.pl> References: <6D80BDFB1A1FA74DA476417C24C452A102495C8361@scl-exch2k7.phoenix.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Return-path: Received: from ogre.sisk.pl ([217.79.144.158]:45843 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751917AbZDZXNR (ORCPT ); Sun, 26 Apr 2009 19:13:17 -0400 In-Reply-To: <6D80BDFB1A1FA74DA476417C24C452A102495C8361@scl-exch2k7.phoenix.com> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Kaushik Barde Cc: "linux-acpi@vger.kernel.org" On Sunday 26 April 2009, Kaushik Barde wrote: > I am using stable-2.6.29.1 on Lenovo X300. > > echo mem > /sys/power/state works if I disable AP core using echo 0 > /sys/devices/system/cpu/cpu1/online. > > With SMP, first s3 cycle goes through, subsequent suspend does not work. > > Is this a known issue with CPU_HOTPLUG or suspend re-ordering code? Similar symptoms have been reported, but the previous reporter did not connect them with the CPU hotplugging. The issue isn't actually known and suspend-resume works on many SMP systems. Is the problem reproducible with the current mainline kernel? Rafael