From owner-freebsd-questions@FreeBSD.ORG Sat Nov 29 12:21:45 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B38B71065672 for ; Sat, 29 Nov 2008 12:21:45 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mx01.qsc.de (mx01.qsc.de [213.148.129.14]) by mx1.freebsd.org (Postfix) with ESMTP id 523EC8FC14 for ; Sat, 29 Nov 2008 12:21:45 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from r55.edvax.de (port-92-196-24-200.dynamic.qsc.de [92.196.24.200]) by mx01.qsc.de (Postfix) with ESMTP id 58C7F5057E; Sat, 29 Nov 2008 13:21:42 +0100 (CET) Received: from r55.edvax.de (localhost [127.0.0.1]) by r55.edvax.de (8.14.2/8.14.2) with SMTP id mATCLfO0002816; Sat, 29 Nov 2008 13:21:41 +0100 (CET) (envelope-from freebsd@edvax.de) Date: Sat, 29 Nov 2008 13:21:41 +0100 From: Polytropon To: "Roey Dror" Message-Id: <20081129132141.6f450eea.freebsd@edvax.de> In-Reply-To: References: Organization: EDVAX X-Mailer: Sylpheed 2.4.7 (GTK+ 2.12.1; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: FreeBSD Questions Subject: Re: Noisy mouse X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Polytropon List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Nov 2008 12:21:45 -0000 On Sat, 29 Nov 2008 13:43:45 +0200, "Roey Dror" wrote: > I'm using FreeBSD 7.0 (i386) with the IceWM window manager. The sound > seems to work when playing files with xmms. > When my speakers are turned on, I hear noise whenever I move my mouse > or make a keystroke. Is this a bug, or a strange feature? How do i > turn it off? I have a similar observation here, allthough you can hear the "noisy mouse" only when the mixer settings vol is 100. In my opinion, this seems to be a kind of electromagnetic interference, but I didn't test this theory yet. Or it has to do with data fransfers during mouse movement / keystrokes? USB uses polling, but maybe some weird interrupt problem? Anyone remembers Sound Blaster problems when printing on a parallel printer (IRQ7)? My settings are different from yours: % uname -r 7.0-STABLE (ca. Aug 2008) % cat /dev/sndstat FreeBSD Audio Driver (newpcm: 32bit 2007061600/i386) Installed devices: pcm0: at io 0xd800 irq 16 [MPSAFE] (1p:1v/1r:1v channels duplex default) % dmesg | grep pcm pcm0: port 0xd800-0xd8ff irq 16 at device 7.0 on pci3 pcm0: [ITHREAD] % sysctl -a | grep snd hw.snd.latency_profile: 1 hw.snd.latency: 5 hw.snd.report_soft_formats: 1 hw.snd.compat_linux_mmap: 0 hw.snd.feeder_buffersize: 16384 hw.snd.feeder_rate_round: 25 hw.snd.feeder_rate_max: 2016000 hw.snd.feeder_rate_min: 1 hw.snd.verbose: 1 hw.snd.maxautovchans: 16 hw.snd.default_unit: 0 hw.snd.version: 2007061600/i386 hw.snd.default_auto: 0 As you described, moving the mouse and pressing keys on the keyboard result in strange "sound effects". I have a Sun USB type 6 keyboard + type 6 mouse. I'm using a separate sound card (PCI) because I diskike the "AC'97" CPU sound card emulation. :-) -- Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...