From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Subject: Re: ACPI on Compaq 6715b - BIOS from the wrong end of the planet Date: Tue, 29 Apr 2008 16:57:48 +0100 Message-ID: <4817457C.6000103@gmail.com> References: <48144209.7080203@gmail.com> <1209476717.1784.853.camel@queen.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from nf-out-0910.google.com ([64.233.182.185]:58310 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751974AbYD2P5z (ORCPT ); Tue, 29 Apr 2008 11:57:55 -0400 Received: by nf-out-0910.google.com with SMTP id d3so44033nfc.21 for ; Tue, 29 Apr 2008 08:57:53 -0700 (PDT) In-Reply-To: <1209476717.1784.853.camel@queen.suse.de> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: trenn@suse.de Cc: linux-acpi@vger.kernel.org Thomas Renninger wrote: > On Sun, 2008-04-27 at 10:06 +0100, Richard wrote: > >> Hi all, >> >> Pardon for the intrusion, I am trying to fault find a horrible wrong >> ACPI interface and fix it. >> >> the problem is as follows... >> >> Kernel 2.6.23 works fine, except there is no stable clocksource.. >> acpi_pm, tsc doesnt work and jiffies .. well thats just jiffies. The >> kernel boots but time sources are erratic and this results in an >> unstable clock (Mp3's play at erratic speeds) >> >> Kernel 2.6.25 hangs the system if I enable ACPI Timer and rebuild/boot >> the new linux kernel. The only clock sources are tsc and jiffies and TSC >> is disables due to being erratic. If I totally disable ACPI, the kernel >> boots and works with stable clocks.. but obviously Power management is >> gone. >> >> The system is an ATI bridged AMD Sempron notebook. I have tried Millions >> of options in the kernel bootup and none seem to do clear the problem. >> This system seems to suffer from the Clocks fast bug. (the dmesg reports >> that the 8254 clock is disables, IO-APIC int0 fails and IO-APIC Vritual >> wire is OK.. if that means anything :D) >> >> Any pointers.. and if anyone wants the AML/ACPI stuff, please feel free >> to shout. >> > Does: > disable_timer_pin_1 > or > noapictimer > work? > > Thomas > > > Thanks a Million.. noapictimer works perfectly ... BUT .. only on 64Bit. acpi_pm is not present on 32bit as a clocksource and it defaulted to jiffies. (tsc was marked as imreliable) I am really surprised that this Sempron notebook actually had 64Bit CPU compatibility :D Richard