Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264545AbUAJD10 (ORCPT ); Fri, 9 Jan 2004 22:27:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264546AbUAJD10 (ORCPT ); Fri, 9 Jan 2004 22:27:26 -0500 Received: from adsl173-178.dsl.uva.nl ([146.50.173.178]:3225 "EHLO hypnos.var.cx") by vger.kernel.org with ESMTP id S264545AbUAJD1Z (ORCPT ); Fri, 9 Jan 2004 22:27:25 -0500 Date: Sat, 10 Jan 2004 04:27:31 +0100 From: Frank v Waveren To: Aaron Burt Cc: linux-kernel@vger.kernel.org Subject: Re: ALSA: bad sound with low CPU load Message-ID: <20040110032731.GA16908@var.cx> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1119 Lines: 20 On Fri, Jan 09, 2004 at 11:23:35PM +0000, Aaron Burt wrote: > Basically, sound comes out as a hissing, garbled mess *unless* I load > down the CPU. A kernel compile seems to do nicely for this purpose. Is it a garbled mess or a 1000Hz background tone? I get the latter on the onboard audio of my A7N8X motherboard too, it's interference from the timer interrupt. Not sure if it's power load related or EM interference, but I strongly suspect it'll go away if you turn off making idle calls in the kernel config. Going back to 100Hz (or up to 10000Hz as someone submitted a patch for a while back) will probably make the problem go away too. -- Frank v Waveren Fingerprint: 9106 FD0D fvw@[var.cx|stack.nl|dse.nl] ICQ#10074100 D6D9 3E7D FAF0 92D1 Public key: hkp://wwwkeys.pgp.net/8D54EB90 3931 90D6 8D54 EB90 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/