/dev/dsp disappeared after power outage

[Ariff Abdullah]

On Mon, 4 Feb 2008 15:14:49 -0700
Bert JW Regeer <xistence at 0x58.com> wrote:
> 
> On Feb 4, 2008, at 14:52 , Ulrich Spoerlein wrote:
> 
> > On Mon, 04.02.2008 at 13:00:40 -0700, Bert JW Regeer wrote:
> >> On Feb 4, 2008, at 08:03 , John Baldwin wrote:
> >>> On Saturday 02 February 2008 06:40:15 pm Aryeh M. Friedman
> >wrote: >>> I just had a power outage and when it came back
> >/dev/dsp0.0 was >>> missing from the devices.   the kern module
> >loaded fine and   >>> detected
> >>>> the card correctly (according to dmesg, sysctl and
> >/dev/sndstat)   >>> but
> >>>> neither the above or /dev/pcm exists.  After rebooting the
> >problem >>> remains. Any ideas how to fix it?
> >>>
> >>> Nothing to fix.  This is how devfs device cloning works.
> >>
> >> Nothing to fix? The sound card that is correctly detected by the 
> >
> >> kernel
> >> module is not being created in /dev, ONLY after he had a power  
> >> outage. It is
> >> not even coming back when he reboots the machine.
> >>
> >> I don't have any suggestions, I just don't believe "Nothing to
> >fix"   > is the
> >> right answer.
> >
> > Sigh,
> >
> > AFAIK dev cloning works by creating the device nodes when
> > open()ed. Using 'ls /dev/dsp*' will not open() any devices, so
> > nothing is   created.
> > He should use 'ls /dev/dsp0 /dev/dsp0.0' and then the devices
> > should appear.
> >
> > Try it for yourself, do 'ls /dev/dsp*' then 'ls /dev/dsp.8'
> >
> > Not that anything usefull can be done with ls(1) to get sound :)
> >
> >
> > Cheers,
> > Ulrich Spoerlein
> > -- 
> > It is better to remain silent and be thought a fool,
> > than to speak, and remove all doubt.
> 
> 
> I just booted up my desktop machine at home, I don't have sound  
> enabled by default, so I loaded the module that is required. Before 
> 
> the module was loaded:
> 
> ls -lah /dev/dsp*
> ls: No match.
> 
> After the module was loaded (I just load snd_driver). Nothing else
> was   executed after the module was loaded.
> 
> ls -lah /dev/dsp*
> crw-rw-rw-  1 root  wheel    0, 106 Jan 26 05:24 /dev/dsp0.0
> crw-rw-rw-  1 root  wheel    0, 109 Jan 26 05:24 /dev/dsp0.1
> crw-rw-rw-  1 root  wheel    0, 112 Jan 26 05:24 /dev/dsp0.2
> crw-rw-rw-  1 root  wheel    0, 115 Jan 26 05:24 /dev/dsp0.3
> crw-rw-rw-  1 root  wheel    0, 118 Jan 26 05:24 /dev/dsp0.4
> crw-rw-rw-  1 root  wheel    0, 122 Jan 26 05:24 /dev/dsp0.5
> crw-rw-rw-  1 root  wheel    0, 107 Jan 26 05:24 /dev/dspW0.0
> crw-rw-rw-  1 root  wheel    0, 110 Jan 26 05:24 /dev/dspW0.1
> crw-rw-rw-  1 root  wheel    0, 113 Jan 26 05:24 /dev/dspW0.2
> crw-rw-rw-  1 root  wheel    0, 116 Jan 26 05:24 /dev/dspW0.3
> crw-rw-rw-  1 root  wheel    0, 119 Jan 26 05:24 /dev/dspW0.4
> crw-rw-rw-  1 root  wheel    0, 123 Jan 26 05:24 /dev/dspW0.5
> crw-rw-rw-  1 root  wheel    0, 121 Jan 26 05:24 /dev/dspr0.4
                                                   ^^^^^^^^^^^^
Yours is obviously 6.x .

Beginning with 7.x and beyond, nothing will be created by default,
just like what the original poster being experiencing. Refer to
sound(4).


John and Ulrich are correct. Nothing to fix.

> 
> So what gives?
> 
> Bert JW Regeer
> 

--
Ariff Abdullah
FreeBSD

... Recording in stereo is obviously too advanced
    and confusing for us idiot ***** users :P ........
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