Date: Tue, 5 Feb 2008 10:59:01 +0100 From: usleepless@gmail.com To: "Ariff Abdullah" <ariff@freebsd.org> Cc: aryeh.friedman@gmail.com, xistence@0x58.com, freebsd-hackers@freebsd.org Subject: Re: /dev/dsp disappeared after power outage Message-ID: <c39ec84c0802050159n530b005dkc976ae32c5e460aa@mail.gmail.com> In-Reply-To: <20080205172546.7caea944.ariff@FreeBSD.org> References: <47A4FF5F.9010604@gmail.com> <200802041003.22658.jhb@freebsd.org> <B1CC9925-9E75-4EC0-B102-60139ACC5AFB@0x58.com> <20080204215250.GA1526@roadrunner.spoerlein.net> <954C22ED-D865-4067-9FDE-4002EB445AED@0x58.com> <20080205172546.7caea944.ariff@FreeBSD.org>
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Hi All, On Feb 5, 2008 10:25 AM, Ariff Abdullah <ariff@freebsd.org> wrote: > > On Mon, 4 Feb 2008 15:14:49 -0700 > Bert JW Regeer <xistence@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. although it might be expected behaviour, i am struggling with this as well: if i don't "touch" the dsp device upon boot, ekiga doesn't detect the proper soundcard ( my builtin one ). it selects the USB speakers, which have created a dsp(1)-device. so i ended up writing a startup script which touches dsp0. i find this a strange situation. regards, usleep
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