From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Subject: Re: 3.0.0-1-rt-amd64: Suspend hangs Date: Mon, 3 Oct 2011 21:14:52 +0200 Message-ID: <20111003191452.GK6949@pengutronix.de> References: <20110930010128.ede515e66ed1a331ad625a2a@johnohagan.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-rt-users@vger.kernel.org, Jonathan Nieder , Thomas Gleixner To: johnohagan Return-path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:51746 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753509Ab1JCTOy (ORCPT ); Mon, 3 Oct 2011 15:14:54 -0400 Content-Disposition: inline In-Reply-To: <20110930010128.ede515e66ed1a331ad625a2a@johnohagan.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: Hello John, On Fri, Sep 30, 2011 at 01:01:28AM +1000, johnohagan wrote: > Running Debian testing on an HP Mini 5102 with non-RT kernel, suspend > to ram, suspend to disk and resume work as expected. With the RT > kernels from both testing and Sid, attempting to suspend may result i= n > a lock-up, with a blank screen and high fan operation. Keyboard and > Sysrq keys are unresponsive and a hard shutdown is necessary. This > happens randomly AFAIKT, of the order of half the time, possibly more > often if larger programs are running, but still occurs in single-user > mode. >=20 > I ran the tests using /sys/power/pm_test described here: > https://raw.github.com/torvalds/linux/master/Documentation/power/basi= c-pm-debugging.txt >=20 > The freeze occurs with pm_test set to "processors", but not with "pla= tform".=20 Can you please test the following two things: - Can you reproduce with the kernel parameter: maxcpus=3D1 ? - Does onlining/offlining of the 2nd cpu work reliably? That is: echo 0 > /sys/devices/system/cpu/cpu1/online echo 1 > /sys/devices/system/cpu/cpu1/online Best regards Uwe --=20 Pengutronix e.K. | Uwe Kleine-K=F6nig = | Industrial Linux Solutions | http://www.pengutronix.de/= | -- To unsubscribe from this list: send the line "unsubscribe linux-rt-user= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html