Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 7 Apr 2001 16:43:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 7 Apr 2001 16:43:31 -0400 Received: from nat-pool.corp.redhat.com ([199.183.24.200]:2292 "EHLO devserv.devel.redhat.com") by vger.kernel.org with ESMTP id ; Sat, 7 Apr 2001 16:43:21 -0400 Message-ID: <3ACF7D1E.6EAB0149@redhat.com> Date: Sat, 07 Apr 2001 16:48:30 -0400 From: Doug Ledford X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.2.17-11 i686) X-Accept-Language: en MIME-Version: 1.0 To: Naren Devaiah CC: linux-kernel@vger.kernel.org Subject: Re: i810_audio.c: Clicks while playing audio In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Naren Devaiah wrote: > > Hi, > > On a HP Vectra VL 400 with a i815 motherboard playing a .wav file (haven't > tried anything else) causes the sound to be played with a lot of periodic > clicks. > The kernel is 2.4.3 > dmesg shows: > Intel 810 + AC97 Audio, version 0.01, 17:25:00 Apr 6 2001 > PCI: Enabling device 00:1f.5 (0000 -> 0001) > PCI: Found IRQ 9 for device 00:1f.5 > PCI: The same IRQ used for device 00:1f.3 > PCI: Setting latency timer of device 00:1f.5 to 64 > i810: Intel ICH 82801AA found at IO 0x1300 and 0x1200, IRQ 9 > ac97_codec: AC97 Audio codec, id: 0x4352:0x5934 (Cirrus Logic CS4299) > i810_audio: 9568 bytes in 50 milliseconds > i810_audio: DMA overrun on send > i810_audio: DMA overrun on send > > lsmod show: > root@darkstar:~# lsmod > Module Size Used by > i810_audio 14084 0 > ac97_codec 7908 0 [i810_audio] > > My question is: What does "DMA overrun on send" mean? It means it sounds like you have an older version of the driver (older here means "not my latest patch"). I sent my stuff to Alan, and it was in the ac series kernels, but I don't know what happened to make it into 2.4.3. I'm fixing one last known bug in the driver tonight, and when I'm done I'll put a patch against 2.4.3 on my web site and drop a note here. -- Doug Ledford http://people.redhat.com/dledford Please check my web site for aic7xxx updates/answers before e-mailing me about problems - 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/