From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Wilms Subject: ACPI seems to work, but sleep states don't Date: Thu, 16 Jun 2005 19:52:06 +0200 Message-ID: <42B1BC46.5030004@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org 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 Hi, I am experiencing strange results with ACPI on my Fujitsu-Siemens Amilo M7400 (Centrino 1.4GHz), Debian Sarge, Kernel 2.6.11, with some patches for Winbond SD/MMC card support. I have ACPI support including Sleep States compiled into the kernel, and the Debian packages acpi and acpid installed to access the functions. The /proc/acpi interface seems to work nicely, returning all information (like battery status or button events) correctly. Also cat /sys/power/states lists "standby mem disk" as it should. On the web, several people report that also sleep states work. I have appended a list of URLs of reports I have discovered. They all report that at least disk = Hibernate = S4 works out of the box. They all use slightly different 2.6 kernels, but rather older ones than mine. For me, however, echo disk > /sys/power/state doesn't seem to do anything at all. echo standby > /sys/power/state makes the screen go black for a second or so, and then return to normal again, and produces in dmesg: PM: Preparing system for suspend Stopping tasks: ===== ... ======| Restarting tasks... done The only thing which seems to be the same as in the other installations is echo mem > /sys/power/state, which does seem to put the system in suspend mode, but the display cannot be activated again. I am not particularly interested in the S3 suspend mode, but it would be nice if I could use S4 and standby. Maybe I should mention that acpid gives the error message "acpid: can't open /proc/acpi/event: Device or resource busy" but then I don't think that's related really. I would appreciate your help on how to get S4 and standby working, as I am out of ideas. Especially, I cannot find any reports of a similar situation online. Thank you very much, Johannes Wilms Other Amilo M7400 users: http://www.angelfire.com/linux/notebook/fujitsu/m7400.html http://www.cc.jyu.fi/~hastrup/linux/amilo.html http://www.rage-star.org/linux.html http://www.david-froehlich.de/index.html?computer-amilo.html ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click