[mythtv-users] RE:/dev/dsp device or resource busy ??

[myth at h2cs.com]

Seth,
	If you are running KDE, the next time you get this error run ksysguard 
from a console.  Select the checkbox for Tree, and then look for 
knotify.  On my system Aplay is a subprocess of knotify, and I am trying 
to see if it is a universal problem, or am I just lucky?  If you have 
knotify/aplay, you can select aplay and then press the kill button. 
That frees up /dev/dsp on my system.  Please let me know if this works 
for you, so I can try to figure out a permanent solution.  If it doesn't 
let me know that too, so I can start looking elsewhere for the problem.

	There had been a solution posted that said to disable the Arts sound 
system in KDE, which I did, but I still had the problem.  Killing 
knotify's aplay process seems to do the trick.

Message: 21
Date: Sat, 8 Nov 2003 07:56:11 -0500
From: "Seth Lake" <caver at verizon.net>
Subject: [mythtv-users] /dev/dsp device or resource busy ??
To: <mythtv-users at mythtv.org>
Message-ID: <000d01c3a5f8$b543fcb0$2f01a8c0 at papasan>
Content-Type: text/plain; charset="iso-8859-1"

it looks like Mandrake 9.1 has OSS stock, which was working alright for 
me (besides only being allowed 1 program to use the device at a time) 
but i'm running into problems getting programs like ogle to work, they 
want ALSA.  also, i'm told ALSA has better sound quality anyhow.  been 
beating my head against this machine for almost a week now.  anyways...

i get a '/dev/dsp device or resource busy' error message all the time 
now.  a 'fuser -v /dev/dsp' shows nothing.  'top' shows that aplay is 
hogging resources on programs that try to wait for the device to become 
un-busy (like mplayer).  aplay uses 90%+ for awhile and then sometimes 
it kicks in (mplayer starts working and plays the video file normally) 
after awhile (sometimes mplayer sits there for over 30 minutes before it 
starts up!).  mythtv just dies 90% of the time and miraculously works 
10% with no changes at all in the environment.  when it does work i get 
these nasty vertical lines with my latest IVTV CVS, but that's another 
story.

anyone have any clues for me?  i've checked permissions (755 on /dev/dsp 
and /dev/sound/*), i've renamed /usr/bin/artsd and /usr/bin/artsdsp 
because i've read that they can cause problems.  i do not need a 
bi-directional card (although it should be, i would imagine) because i'm 
using a pvr-250.

Mandrake 9.1 / 2.4.21-0.25mdk kernel
Celeron 500 / 256MB
PVR-250
Soundblaster PCI128 (ens1371 chip)
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