From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268742AbUHTUhO (ORCPT ); Fri, 20 Aug 2004 16:37:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268734AbUHTUfo (ORCPT ); Fri, 20 Aug 2004 16:35:44 -0400 Received: from sccimhc91.asp.att.net ([63.240.76.165]:26258 "EHLO sccimhc91.asp.att.net") by vger.kernel.org with ESMTP id S264973AbUHTUck (ORCPT ); Fri, 20 Aug 2004 16:32:40 -0400 From: Steve Snyder To: Linux Kernel Mailing List Subject: Audio volume poor in Linux, OK in Win2K Date: Fri, 20 Aug 2004 15:32:41 -0500 User-Agent: KMail/1.5 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200408201532.41296.swsnyder@insightbb.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I can't seem to get much volume out of my audio controller. I have a dual-boot system, Win2K/SP4 and Fedora Core 2 (FC2), both with all updates applied. The volume is fine in Win2K. In FC2, even with the volume turned up to 100%, audio output is barely loud enough for voices to be understood. This is true whether using the built-in speakers or with headphones. The lack of volume is *not* application dependant. Prior to installing FC2, I ran RedHat Linux v9 with the most recent 2.4.x kernel available at that time. The audio volume was also inadaquate in this environment, yet was still fine in Win2K. I see no errors or warning in my system logs that might indicate any problems with the audio driver in use. My hardware is a HP Presario 2570us notebook, which has an integrated ALi M5451 audio controller. More detail: 00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link Controller Audio Device (rev 02) Subsystem: Hewlett-Packard Company: Unknown device 0850 Flags: bus master, medium devsel, latency 64, IRQ 5 I/O ports at 1000 Memory at d4000000 (32-bit, non-prefetchable) [size=4K] Capabilities: [dc] Power Management version 2 These are the audio-related (kernel v2.6.8) modules seen with lsmod: snd_ali5451 18888 0 snd_ac97_codec 58500 1 snd_ali5451 snd_pcm 75912 1 snd_ali5451 snd_page_alloc 8584 1 snd_pcm snd_timer 18692 1 snd_pcm snd 42596 4 snd_ali5451,snd_ac97_codec,snd_pcm,snd_timer soundcore 6624 1 snd It seems that the Linux audio subsystem is incapable of producing the audio volume that I get in Win2K, at least with this hardware. Is there anything I can do to get more volume in Linux? Thanks.