Date: Mon, 4 Feb 2008 22:52:50 +0100 From: Ulrich Spoerlein <uspoerlein@gmail.com> To: Bert JW Regeer <xistence@0x58.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: /dev/dsp disappeared after power outage Message-ID: <20080204215250.GA1526@roadrunner.spoerlein.net> In-Reply-To: <B1CC9925-9E75-4EC0-B102-60139ACC5AFB@0x58.com> References: <47A4FF5F.9010604@gmail.com> <200802041003.22658.jhb@freebsd.org> <B1CC9925-9E75-4EC0-B102-60139ACC5AFB@0x58.com>
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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.
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