Date: Tue, 28 Dec 2004 00:51:19 -0500 (EST) From: doug@safeport.com To: freebsd-questions@freebsd.org Subject: Re: /dev/dsp busy Message-ID: <20041227211714.L7651@pemaquid.safeport.com> In-Reply-To: <20041128235808.B17504@pemaquid.safeport.com> References: <20041128162838.V8270@pemaquid.safeport.com> <41AA768F.2080606@gldis.ca> <20041128235808.B17504@pemaquid.safeport.com>
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A suggestion from a Jan 2004 thread worked for me:
Date: Sun, 25 Jan 2004 08:42:07 -0500 (EST)
From: Stephen Martin <jyroscop@cotse.com>
To: geert.hendrickx@ua.ac.be
Cc: freebsd-questions@freebsd.org
Subject: Re: /dev/dsp: Device busy
Geert,
I was having this specific problem when trying to use mplayer. What I did
was change the "Autosuspend if idle for" setting. It can be found in
Control Center -> Sounds & Multimedia -> Sound System -> aRTs tab (feels
vaguely like describing a windows problem :). I set mine at 5 seconds.
Your's will of coarse depend.
In my case a reboot was required after changing the setting. This thread was
describing FreeBSD 4.9 and kde 3.2. I am running 5.3R and kde 3.3.0. The /dev/dsp busy
condition seems to occur across a number of PCs and sound cards.
I had also added the following to /boot/device.hints:
hint.pcm.0.at="isa"
hint.pcm.0.irq="5"
hint.pcm.0.drq="1"
hint.pcm.0.flags="0x0"
I have since removed these statements and have no evidence they had any effect. Other
than the kde setting the only change related to sound is hw.snd.verbose=3 in
/etc/sysctl.conf.
On Mon, 29 Nov 2004 doug@safeport.com wrote:
> Alas no - thank you for the suggestion. Following your lead I tried a number of
> variations including turning ACPI off, any some other sysctl setting I found via
> google. All with the same result.
>
> Next I removed load command from loader.conf and rebooted. No kde, no X server.
> I then loaded and tried to unload the sound modules. sound.ko would not unload
> presenting as busy. Is this a problem? It was suggested to me interrupt problem
> at startup could cause this. I get the same result in single user mode.
>
> My commands:
>
> # kldstat
> Id Refs Address Size Name
> 1 7 0xc0400000 5cdad0 kernel
> 2 14 0xc09ce000 537f0 acpi.ko
> 3 1 0xc1675000 17000 linux.ko
>
> # kldload snd_maestro
> pcm0: <ESS Technology Maestro-2E> port 0x1400-0x14ff irq 5 at device 8.0 on pci0
>
> pcm0: <SigmaTel STAC9721/23 AC97 Codec>
> pcm0: [GIANT-LOCKED]
>
> root@mneme:~# kldunload snd_maestro
> pcm0: detached
> # kldunload sound
> kldunload: attempt to unload file that was loaded by the kernel
> kldunload: can't unload file: Device busy
>
>
> On Sun, 28 Nov 2004, Jeremy Faulkner wrote:
>
> > doug@safeport.com wrote:
> > > I need help in finding the reason for the /dev/dsp busy message. fstat does not
> > > show any process using /dev/dsp.
> > >
> > > I am running 5.3 with xorg, kde 3.3. When KDE starts, /dev/dsp tests busy which
> > > directs arts to /dev/null. There are no processes using /dev/dsp. I can play
> > > CDs using either kcd or 'cdcontrol -f /dev/acd0 play 1', so I think the sound
> > > card is setup okay.
> > >
> > > However something is wrong since 'cat filename > /dev/dsp' produces no sound.
>
> I am assuming that the above means this is not a KDE problem. Is this correct?
>
> > > My configuration:
> [cut]
> > > Thanks for any pointers.
> > >
> >
> > try as root:
> > sysctl -w hw.snd.maxautovchans=4
> >
> > --
> > Jeremy Faulkner <gldisater@gldis.ca>
> > Resume: http://www.gldis.ca/gldisater/resume.html
> >
>
> _____
> Douglas Denault
> http://www.safeport.com
> doug@safeport.com
> Voice: 301-469-8766
> Fax: 301-469-0601
> _______________________________________________
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>
_____
Douglas Denault
http://www.safeport.com
doug@safeport.com
Voice: 301-469-8766
Fax: 301-469-0601
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