Date: Sat, 12 Mar 2011 03:54:29 +0100 From: Bernt Hansson <bernt@bah.homeip.net> To: Brian Waters <brianmwaters@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Quick question about sound drivers (esp. snd_hda) Message-ID: <4D7AE065.4070603@bah.homeip.net> In-Reply-To: <AANLkTikZm1FCUmCdu2iNL6ZWcUOn5aOQErPsTUodFhmb@mail.gmail.com> References: <AANLkTikZm1FCUmCdu2iNL6ZWcUOn5aOQErPsTUodFhmb@mail.gmail.com>
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2011-03-11 21:29, Brian Waters: > It seems to me that under /dev, you can have the following > sound-related device files: > > dspX > dspX.Y > (among others) > > I'm having some trouble getting my sound to work (Dell Inspiron > E1705/Inspiron 9400 with Sigmatel STAC9220 codec). I've read the > manpages for snd and snd_hda (which is the appropriate driver), and > increased the verbosity of the drivers and read the kernel log and > /dev/sndstat, but I still can't quite wrap my head around everything. > > What I'm wondering is: what exactly is the meaning of X and Y above? > I'm assuming that X comes from the "association numbers" in the > snd_hda driver, but I could be wrong. Please correct me! This is what I think. dsp0.0 is the first device on the first "bus" and so on. %ls -l /dev/ds* crw-rw-rw- 1 root wheel 0, 155 11 Mar 19:16 /dev/dsp0.0 crw-rw-rw- 1 root wheel 0, 148 9 Mar 11:16 /dev/dsp1.0 crw-rw-rw- 1 root wheel 0, 146 9 Mar 11:16 /dev/dsp2.0 crw-rw-rw- 1 root wheel 0, 121 9 Mar 11:16 /dev/dsp3.0 %cat /dev/sndstat FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64) Installed devices: pcm0: <HDA Realtek ALC888 PCM #0 Analog> (play/rec) default pcm1: <HDA Realtek ALC888 PCM #1 Analog> (play/rec) pcm2: <HDA Realtek ALC888 PCM #2 Digital> (play/rec) pcm3: <HDA ATI R6xx HDMI PCM #0 HDMI> (play)
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