From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tim Stadelmann" Subject: ACPI on Dell Latitude C600 Date: Wed, 21 Jan 2004 17:04:45 -0000 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <003e01c3e040$ab873700$03f101a3@physics.ox.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit Return-path: Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Dear all, I've recently experimented with getting ACPI sleep states to work on my Dell Latitude C600 (BIOS revision A21) using a 2.6.0 kernel and the latest appropriate patch from acpi4linux. With a minimal amount of kernel driver modules loaded, both S1 and S3 almost work, with one interesting problem: The computer displays messages indicating it is going into the appropriate sleep state, then switches off most peripherals *except* for the screen and backlight. Pressing the power button causes it to resume, but now the screen is switched *off* during this process. Changing the virtual console to the one used for X11 causes the X server to switch the screen back on and the computer appears to be working properly afterwards. The entries in the system log do not give any indication that something is going wrong. I wondered whether you might find this information helpful or have any idea where the problem stems from... Please do not hesitate to contact me for more information if required, I'm quite keen to help makeing ACPI work better, as I think poor power management support is one of the main things holding Linux back at the moment. Regards, Tim Stadelmann ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn