From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: Boot problems with 2.6.29.1 - cannot smoothly boot on battery Date: Sun, 24 May 2009 22:36:21 +0200 Message-ID: <200905242236.22715.rjw@sisk.pl> References: <3d2f29dc0905180125x5e7ef51dqf10955a3d44336e2@mail.gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from ogre.sisk.pl ([217.79.144.158]:33801 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751820AbZEXUgS (ORCPT ); Sun, 24 May 2009 16:36:18 -0400 In-Reply-To: <3d2f29dc0905180125x5e7ef51dqf10955a3d44336e2@mail.gmail.com> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Chris Howie Cc: linux-kernel@vger.kernel.org, ACPI Devel Maling List , Linux PM List , Ingo Molnar , "H. Anvin" , Greg KH On Monday 18 May 2009, Chris Howie wrote: > Folks: > > I've been running 2.6.29.1 for some time and reported an issue to this > mailing list a while ago about the boot process. I believe I have now > nailed down the one factor that determines whether I see this issue. > > The problem arises only when booting or halting my laptop when there > is no power plugged in, e.g. the system is running on battery. > Sometime after init begins starting services I must hold down a key on > the keyboard to convince it to continue booting, otherwise it just > hangs. If the system is running on AC then it boots fine. This same > problem repeats itself during the halt process if running on battery. > > This also happens when resuming a suspend-to-disk image, after loading > the data from the hard drive, but before control is returned to > userspace. The keyboard has no effect on this hang, presumably > because the kernel is not listening to the keyboard at this point. > When this happens the only solution is to hold the power button and > boot normally instead. > > An issue like this is a serious usability problem for me. I am > neither a kernel developer nor hacker, my coding skills applying > mostly to userspace applications. If there is anything you need from > me to help diagnose this problem please let me know. > > I am not subscribed so please CC me on replies. Let's try to make your report a bit more visible (some CCs added). Best, Rafael