From owner-freebsd-multimedia Tue Jun 12 2:58:26 2001 Delivered-To: freebsd-multimedia@freebsd.org Received: from khan.acc.umu.se (khan.acc.umu.se [130.239.18.139]) by hub.freebsd.org (Postfix) with ESMTP id 8E9E537B408 for ; Tue, 12 Jun 2001 02:58:22 -0700 (PDT) (envelope-from markush@acc.umu.se) Received: from shaka.acc.umu.se (markush@shaka.acc.umu.se [130.239.18.148]) by khan.acc.umu.se (8.11.2/8.11.2) with ESMTP id f5C9wKR12923 for ; Tue, 12 Jun 2001 11:58:20 +0200 (MEST) Received: (from markush@localhost) by shaka.acc.umu.se (8.11.2/8.11.2) id f5C9wKL16431 for freebsd-multimedia@freebsd.org; Tue, 12 Jun 2001 11:58:20 +0200 (MEST) Date: Tue, 12 Jun 2001 11:58:20 +0200 From: Markus Holmberg To: freebsd-multimedia@freebsd.org Subject: Constant hissing sound with FreeBSD sound driver? Message-ID: <20010612115820.A16372@acc.umu.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3-current-20000511i Sender: owner-freebsd-multimedia@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, I get (and have had for as long as I can remember) a hissing background sound in FreeBSD. This occurs in two different computers with two different sound cards: pcm0: port 0xdc00-0xdc3f irq 10 at device 15.0 on pci0 pcm0: port 0x9800-0x983f irq 9 at device 13.0 on pci0 This sound is noticeable, but not dominant at low volumes. At high volumes (and no sound going out) the hissing is very noticeable. This hissing starts exactly when the sound card is initialized in the bootup sequence, which leads me to believe there is a way to fix it. Any hints? I will do my best to assist in tracing this! I'm using "device pcm0" in the kernel config for my FreeBSD 4.3-STABLE system. (Though this hissing has existed for as long as I can remember, probably even since 3.x?) It's an annoying problem which spoils the enjoyment of listening to audio on my FreeBSD systems :(. Markus (Please keep me on CC as I'm not on the list) -- Markus Holmberg | Give me Unix or give me a typewriter. markush@acc.umu.se | http://www.freebsd.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message