From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262258AbULCPWe (ORCPT ); Fri, 3 Dec 2004 10:22:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262259AbULCPWd (ORCPT ); Fri, 3 Dec 2004 10:22:33 -0500 Received: from brmea-mail-4.Sun.COM ([192.18.98.36]:43428 "EHLO brmea-mail-4.sun.com") by vger.kernel.org with ESMTP id S262258AbULCPWa (ORCPT ); Fri, 3 Dec 2004 10:22:30 -0500 Date: Fri, 03 Dec 2004 10:22:28 -0500 From: Mike Waychison Subject: wakeup_pmode_return jmp failing? To: Linux kernel Message-id: <41B084B4.1050402@sun.com> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7BIT X-Accept-Language: en-us, en User-Agent: Mozilla Thunderbird 0.8 (X11/20040926) X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, Not sure who to direct this to. I've been trying to get acpi s3 to work on my pentium M laptop (tecra m2). Without the nvidia driver loaded, I can echo 3 > /proc/acpi/sleep and the machine does indeed suspend (power light throbs and all). However, when I try to wake up the thing, it would flash the bios screen and throw me back to grub. I've been investigating the code at arch/i386/kernel/acpi/wakeup.S, and have discovered that if I place a busy wait directory before the ljmpl to wakeup_pmode_return, that I indeed do see 'Lin' on the screen instead of the bios screen. The joke is, if I place a busy wait first thing after the wakeup_pmode_return label, it never gets executed and I get a regular boot. It would appear as though the jump from 16bit code into the 32bit code is failing and the bios is kicking in with a regular startup. Anybody have any suggestions? - -- Mike Waychison Sun Microsystems, Inc. 1 (650) 352-5299 voice 1 (416) 202-8336 voice ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ NOTICE: The opinions expressed in this email are held by me, and may not represent the views of Sun Microsystems, Inc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBsIS0dQs4kOxk3/MRAjlMAJ9HZus6LJ7oTj/OYpzn+D9nle0fsACghVot tpOzjmA3Klxvyig/SIMr+xo= =LvHT -----END PGP SIGNATURE-----