From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750801AbWE2MqM (ORCPT ); Mon, 29 May 2006 08:46:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750818AbWE2MqM (ORCPT ); Mon, 29 May 2006 08:46:12 -0400 Received: from ns.suse.de ([195.135.220.2]:4010 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S1750801AbWE2MqL (ORCPT ); Mon, 29 May 2006 08:46:11 -0400 Date: Mon, 29 May 2006 14:46:10 +0200 Message-ID: From: Takashi Iwai To: Andrey Borzenkov Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [Alsa-devel] 2.6.16.x - relatively low volume and high noice using snd-ali15451 In-Reply-To: <200605281128.33841.arvidjaar@mail.ru> References: <200605281128.33841.arvidjaar@mail.ru> User-Agent: Wanderlust/2.12.0 (Your Wildest Dreams) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 MULE XEmacs/21.5 (beta25) (eggplant) (+CVS-20060326) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Sun, 28 May 2006 11:28:33 +0400, Andrey Borzenkov wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I have a notebook with built in sound card: > > {pts/0}% lspci > 00:00.0 Host bridge: ALi Corporation M1644/M1644T Northbridge+Trident (rev 01) > 00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller > 00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) > 00:04.0 IDE interface: ALi Corporation M5229 IDE (rev c3) > 00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link > Controller Audio Device (rev 01) > 00:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV] > 00:08.0 Bridge: ALi Corporation M7101 Power Management Controller [PMU] > 00:0a.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] > (rev 08) > 00:10.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller > (rev 01) > 00:11.0 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus > Bridge with ZV Support (rev 32) > 00:11.1 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to Cardbus > Bridge with ZV Support (rev 32) > 00:12.0 System peripheral: Toshiba America Info Systems SD TypA Controller > (rev 03) > 01:00.0 VGA compatible controller: Trident Microsystems CyberBlade XPAi1 (rev > 82) > > A some point I noticed that volume became quite low; attempting to turn it up > using volume control on notebook results in very audible noise that makes it > impossible to actually use sound. This pretty depends on the ac97 codec chip. Check what is on your device via /proc/asound/card0/codec97#0/* files. > > I am very casual sound user so I unfortunately cannot tell when exactly the > problem appeared first; but I am pretty sure that in 2.6.14 I could normally > watch video or listen CD without much strain. The driver code of ali5451 hasn't been changed much since long time ago. So I suspect it's rather the mixer setting or breakage in other place. You can try 2.6.14 kernel with the latest ALSA driver 1.0.11 (compile as external modules from alsa-driver-1.0.11 tarball) to check whether it's a regression of ALSA or elsewhere. Takashi