From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932324Ab0IGRM6 (ORCPT ); Tue, 7 Sep 2010 13:12:58 -0400 Received: from gabe.freedesktop.org ([131.252.210.177]:32840 "EHLO gabe.freedesktop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932147Ab0IGRM4 (ORCPT ); Tue, 7 Sep 2010 13:12:56 -0400 From: Eric Anholt To: Andy Isaacson , linux-kernel@vger.kernel.org Cc: Zou Nan hai Subject: Re: [2.6.36-rc2 regression] X201s: resume-from-S2R hangs In-Reply-To: <20100906090536.GA12250@hexapodia.org> References: <20100906090536.GA12250@hexapodia.org> User-Agent: Notmuch/0.3.1-16-g417274d (http://notmuchmail.org) Emacs/23.2.1 (i486-pc-linux-gnu) Date: Tue, 07 Sep 2010 10:12:34 -0700 Message-ID: <87fwxlbhq5.fsf@pollan.anholt.net> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-=-= Content-Transfer-Encoding: quoted-printable On Mon, 6 Sep 2010 02:05:36 -0700, Andy Isaacson wrote: > I have a Thinkpad X201s on which suspend-to-RAM was quite reliable until > after 2.6.36-rc1; with problematic kernels, suspend seems to work OK > (the machine goes to sleep with the moon LED steadily lit) but on resume > the LCD never lights up (and it's not just the backlight, the screen > isn't drawing at all) and the keyboard and network are dead. Nothing > makes it to syslog, either. The moon LED is turned off though. >=20 > There seems to be some timing component to the problem -- some problem > kernels will suspend reliably 25% or 50% of the time and hang the rest. > There also seems to be some per-reboot state involved; one problem > kernel suspended successfully and survived 25 suspends in a row without > triggering a failure. (But after a reboot, the first suspend hung...) > Other problem kernels fail on 4 out of 4 reboots. >=20 > Bisecting is pretty hard under these conditions, but it seems to point > to Weird. That's exactly the hardware that I tested RC6 on, and I haven't seen a single resume failure on mine. Sounds like time to revert for this release. --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkyGcoIACgkQHUdvYGzw6vdiRQCffgoBi+hHH1VxwvwbAnGXJBCN +OsAoIN4Np5fx4eOyJjsnfHLp0t9DYeQ =k3QX -----END PGP SIGNATURE----- --=-=-=--