From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Moles Subject: Re: strange buzzing sound after the 2.6.10 patch Date: Thu, 24 Feb 2005 16:21:47 -0500 Message-ID: <1109280107.12887.30.camel@localhost> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit In-Reply-To: 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-TtF/mJH4Jtrk1uMJSBkQmQ@public.gmane.org List-Id: linux-acpi@vger.kernel.org Try this: edit /usr/src/linux/include/asm/param.h and change HZ to 100 (instead of 1000). Other folks here can perhaps comment on the side-effects, though I've noticed few I couldn't handle. Perhaps a divide by 0 warning with some programs that "guess" at the HZ, but other than that... You'll find it only happens when the processor ACPI module is loaded. Go figure. On Wed, 2005-02-23 at 21:31 -0500, Jing Su wrote: > Hello, > > I vaguely remember someone else mentioning this problem on the list > before, but I don't recall if there were any answers to the solution. > > I'm running a vanilla 2.6.10 kernel patched with the acpi-2005-01-25 patch. > > When running the patched kernel, I noticed that my laptop makes a very > strange and faint buzzing sound. I've determined that the buzzing > sound is somewhat related to CPU and HD load. When the CPU load is > heavy, or when the HD is busy, the buzzing stops. But when the system > idles, the buzzing continues. I've also tried forcing the HD to go > into suspension using hdparm, but the buzzing continues. > > Any hints or clues? > If this problem hasn't been encountered before, I'd appreciate it if > someone could give hints for how I can best go about isolating the > problem. > > -Jing > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > Acpi-devel mailing list > Acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org > https://lists.sourceforge.net/lists/listinfo/acpi-devel ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click