From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: Boot problems with 2.6.29.1 - cannot smoothly boot on battery Date: Sun, 24 May 2009 14:20:09 -0700 Message-ID: <4A19BA09.4050502@zytor.com> References: <3d2f29dc0905180125x5e7ef51dqf10955a3d44336e2@mail.gmail.com> <200905242236.22715.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from terminus.zytor.com ([198.137.202.10]:42429 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751691AbZEXVUv (ORCPT ); Sun, 24 May 2009 17:20:51 -0400 In-Reply-To: <200905242236.22715.rjw@sisk.pl> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: Chris Howie , linux-kernel@vger.kernel.org, ACPI Devel Maling List , Linux PM List , Ingo Molnar , Greg KH Rafael J. Wysocki wrote: > 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). > I presume it boots with "acpi=off"? -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.