freebsd at edvax.de
Sat Nov 29 04:21:45 PST 2008
On Sat, 29 Nov 2008 13:43:45 +0200, "Roey Dror" <darwinian.empire at gmail.com> 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)
pcm0: <CMedia CMI8738> at io 0xd800 irq 16 [MPSAFE]
(1p:1v/1r:1v channels duplex default)
% dmesg | grep pcm
pcm0: <CMedia CMI8738> port 0xd800-0xd8ff irq 16 at device 7.0 on pci3
% sysctl -a | grep snd
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. :-)
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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