From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Heimanns Subject: Re: speedstep-ich and ich5, [speedstep] Date: Sun, 08 Aug 2004 23:49:55 +0200 Sender: cpufreq-bounces@www.linux.org.uk Message-ID: <4116A003.600@versanet.de> References: <4114D272.6070808@versanet.de> <20040807131432.GA8934@dominikbrodowski.de> <4114E9C1.8070409@versanet.de> <20040808175726.GA15268@dominikbrodowski.de> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20040808175726.GA15268@dominikbrodowski.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Content-Type: text/plain; charset="iso-8859-1"; format="flowed" To: Dominik Brodowski Cc: cpufreq > oh yes, the patch contained a brown paper bag bug. This new version is > also tested by me, so maybe it helps now. Hmm.... I've compiled kernel-2.6.8-rc3-bk3 with your new version but no=20 changes for me. I'm able to 'modprobe acpi' now, but I still cannot=20 change the frequencies when connected to the power supply. If running on=20 battery it is possible. Is it possible that this is purposed by the=20 manufacturer? The output of dmesg tells me nothing new: cpufreq: CPU0 - ACPI performance management activated. cpufreq: *P0: 3059 MHz, 0 mW, 500 uS cpufreq: P1: 1019 MHz, 0 mW, 500 uS I still have the feeling that there is something wrong with the=20 implementation of hyperthreading(HT). I mentioned a time ago that I use=20 my notebook with HT diabled in the BIOS and no SMP support in the=20 kernel. With HT enabled and SMP + HT support in the kernel my notebook=20 will freeze randomly. Don't ask me why.... But ACPI tells me a little difference when I enable/disable HT support=20 in the BIOS: HT enabled: ACPI: Processor [CPU0] (supports C1, 8 throttling states) HT disabled: ACPI: Processor [CPU0] (supports C1 C2, 8 throttling states) Throttling works fine as far as I know under both conditions. When HT is=20 disabled CPU power management seems also to work (switching between C1=20 and C2). I've also checked the INTEL documentation (25302804.pdf),=20 Mobile Intel(R) Pentium(R) 4 Processor with 533 MHz System Bus=20 Datasheet. Is it possibele that the CPU reports as a Mobile CPU but=20 doesn't support frequency and voltage scaling? I won't open the notebook=20 to do a 100 percent check what kind of CPU really is build in.... I appreciate your support and help thanks, Christian --=20 --- Christian Heimanns heimanns@versanet.de ### Pinguine k=F6nnen nicht fliegen - Pinguine st=FCrzen auch nicht ab! ###