From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265667AbUAHR2s (ORCPT ); Thu, 8 Jan 2004 12:28:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265680AbUAHR2s (ORCPT ); Thu, 8 Jan 2004 12:28:48 -0500 Received: from ns.suse.de ([195.135.220.2]:13979 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S265667AbUAHR13 (ORCPT ); Thu, 8 Jan 2004 12:27:29 -0500 Date: Thu, 08 Jan 2004 18:27:28 +0100 Message-ID: From: Takashi Iwai To: "Martin J. Bligh" Cc: linux-kernel , rjwysocki@sisk.pl Subject: Re: [Bug 1804] New: IRQ/DMA related problem with ALSA drivers on ADM64 In-Reply-To: <3960000.1073498396@[10.10.2.4]> References: <3960000.1073498396@10.10.2.4> User-Agent: Wanderlust/2.10.1 (Watching The Wheels) SEMI/1.14.5 (Awara-Onsen) FLIM/1.14.5 (Demachiyanagi) APEL/10.6 MULE XEmacs/21.4 (patch 13) (Rational FORTRAN) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Wed, 07 Jan 2004 09:59:56 -0800, Martin J. Bligh wrote: > request_module: failed /sbin/modprobe -- snd-card-1. error = 256 > request_module: failed /sbin/modprobe -- sound-slot-1. error = 256 > request_module: failed /sbin/modprobe -- snd-card-1. error = 256 they come likely from KDE, which probes two devices as default. > ALSA sound/core/pcm_native.c:1267: playback drain error (DMA or IRQ trouble?) > ALSA sound/core/pcm_lib.c:214: Unexpected hw_pointer value (stream = 0, delta: -7, max > jitter = 5120): wrong interrupt acknowledge? since the delta value (the sample count of delayed interrupt) is small, it looks like the interrupt handling is sloppy. if it's an ACPI problem, usually the delta value is much bigger. -- Takashi Iwai ALSA Developer - www.alsa-project.org