From owner-freebsd-stable@FreeBSD.ORG Fri Dec 2 20:53:00 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DD40016A41F; Fri, 2 Dec 2005 20:53:00 +0000 (GMT) (envelope-from hartzell@satchel.alerce.com) Received: from merlin.alerce.com (w094.z064001164.sjc-ca.dsl.cnc.net [64.1.164.94]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3DC6943D5E; Fri, 2 Dec 2005 20:52:59 +0000 (GMT) (envelope-from hartzell@satchel.alerce.com) Received: from merlin.alerce.com (localhost [127.0.0.1]) by merlin.alerce.com (Postfix) with ESMTP id 9714D21A8; Fri, 2 Dec 2005 12:52:28 -0800 (PST) Received: from satchel.alerce.com (w092.z064001164.sjc-ca.dsl.cnc.net [64.1.164.92]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by merlin.alerce.com (Postfix) with ESMTP id 54E3E2175; Fri, 2 Dec 2005 12:52:28 -0800 (PST) Received: from satchel.alerce.com (localhost [127.0.0.1]) by satchel.alerce.com (8.13.4/8.13.4) with ESMTP id jB2KqxDT012498; Fri, 2 Dec 2005 12:52:59 -0800 (PST) (envelope-from hartzell@satchel.alerce.com) Received: (from hartzell@localhost) by satchel.alerce.com (8.13.4/8.13.4/Submit) id jB2KqxxR012495; Fri, 2 Dec 2005 12:52:59 -0800 (PST) (envelope-from hartzell) From: George Hartzell MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <17296.46122.671120.884060@satchel.alerce.com> Date: Fri, 2 Dec 2005 12:52:58 -0800 To: Jacques Garrigue In-Reply-To: <20051202.110448.25479607.garrigue@math.nagoya-u.ac.jp> References: <20051114.175031.93019232.garrigue@math.nagoya-u.ac.jp> <20051202.110448.25479607.garrigue@math.nagoya-u.ac.jp> X-Mailer: VM 7.17 under 21.4 (patch 17) "Jumbo Shrimp" XEmacs Lucid X-Virus-Scanned: ClamAV using ClamSMTP Cc: freebsd-stable@freebsd.org, freebsd-mobile@freebsd.org Subject: Re: IBM T42 freezes when going to sleep under X11 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: hartzell@alerce.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Dec 2005 20:53:01 -0000 Jacques Garrigue writes: > From: Jacques Garrigue > > I've got a strange problem with my IBM T42 / Radeon M10 setup. > > > > When using the 6.0-RELEASE kernel (including GENERIC), I cannot go to > > sleep when X11 is running: the machine freezes, display still on. I > > tried disabling DRI, but this does not seem to be the problem: I have > > no DRM anyway. > > > > On the other hand, everything works fines with a 6.0-RC1 kernel. > > Was there a big change in between, such that I need to change my > > configuration? > > I finally found the cause of my problems: there has been changes in > the em driver (Gb ethernet), such that the machine freezes when trying > to switch automatically from the X11 VT to the system console, before > going to sleep. The interaction is surprising, but clearly the problem > disappears when I remove "device em" from the kernel configuration, > and it reappears when I do "kldload if_em". Since I'm using only ath > (wireless) anyway, this is fine with me... > > A previous partial solution suggested to me was to add > hw.syscons.sc_no_suspend_vtswitch=1 > to sysctl.conf, but this means the screen gets garbled and I have to > do the switch by hand anyway, which is a real pain. > Worse still: the machine would still freeze when going to sleep while > the disk is active. > > The last step is to track down the bug in em, as it still seems to > be there in yesterday's STABLE. I don't seem to have any problem with my T42p using a kernel compiled on 11/29 11:21 My copy of if_em.c is: /*$FreeBSD: src/sys/dev/em/if_em.c,v 1.65.2.8 2005/11/25 14:11:59 glebius Exp $*/ g.