From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Eisenbach Subject: ACPI issues - suspend-to-ram and processor speed Date: Tue, 18 May 2004 02:13:25 -0700 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <200405180213.34603.andre@eisenbach.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline 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 =2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear ACPI devel team, I have two issues which prevent me from fully enjoying my notbook running o= n=20 Linux. Both are seemingly related to ACPI. Please help me understand the=20 problems better and maybe fix them or help me attempting a fix. The notebook in question is a Compaq Presario 2100Z with an AMD Athlon XP=20 2400+ processor. Current kernel version is 2.6.6-mm2. I am not applying any= =20 ACPI patches from sf.net, but rely on whats in the kernel (which may be my= =20 first mistake). I am very willing to learn and may be able to fix it myself, if you guys ca= n=20 help me find out more about which components are involved. Problem 1 - Cannot suspend (or resume better) Right now I am unable to suspend my notebook in any for or fashion (ram, di= sk,=20 etc.). Therefore I have to turn off the notebook and boot again, which=20 honestly makes the notebook pretty useless. When I try to suspend to RAM, the suspend part seems to run fine (I can see= =20 suspend-to-ram messages), the lcd shuts off and the power button starts=20 pulsing slowly (indicating standby). So far so good. However, if I hit the= =20 power button then to resume, the device seems to want to wake up (hd spins= =20 up, fans start) but the LCD never turns on and the notebook quickly (1-2=20 seconds) later switched to off (all quiet/lights off). Hitting the power=20 button again starts a normal startup. I also tried to suspend to disk using swsusp. That corrupted my swap partit= ion=20 and didn't resume. What does it take to suspend to RAM? What could be broken, and where should I start looking if I want to fix it? What more debug information do you guys need? Problem 2 - CPU slows down when on battery When the power cord is unplugged, my CPU slows down quite a bit. This is no= t=20 indicated in /proc/cpuinfo and NOT due to cpufreq / powernow adjustments. The problem does not seem to occur with ACPI=3DOFF=20 More details here in a post to the linux-kernel mailing list: http://lkml.org/lkml/2004/5/9/100 Also a relevant and informative entry here: http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=3D4676= 55 When on battery, KDE is barely usable. Once again it doesnt make much sense= =20 for a laptop not to be usable on battery ... :( Thanks for your attention and hopefully for your answers/comments. I can=20 provide as much debug/info/configs as you would like and as a programmer am= =20 willing to help out/read up, if you just help me identify where to start. Thanks, Andr=E9 Eisenbach =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAqdO45DBE808V5icRAnEcAJ49pvxNlggXYpLBARhqh/pNSmSKewCgr6Eg mW5uBTiyk0Ab2IdtDXV3038=3D =3DlqX+ =2D----END PGP SIGNATURE----- ------------------------------------------------------- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id=2562&alloc_id=6184&op=click