[ALSA - driver 0000809]: asfxload + aconnect called before dsp used causes dsp to be locked

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=809> 
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Reported By:                vinyvat
Assigned To:                
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Project:                    ALSA - driver
Issue ID:                   809
Category:                   PCI - emu10k1
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Distribution:               Debian testing
Kernel Version:             2.6.8.1
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Date Submitted:             01-12-2005 09:34 CET
Last Modified:              01-12-2005 18:50 CET
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Summary:                    asfxload + aconnect called before dsp used causes
dsp to be locked
Description: 
PS: This bug is present in the alsa version in stock kernel 2.6.8.1 up to
1.0.8-rc2.

For convienience I like to have my wavetable loaded and midi connections
setup during bootup so I can use my midi keyboard by just turning on the
computer.

This worked OK with stock kernel 2.6.3 ( and whatever alsa version came
with it ).

Recently upgraded to stock 2.6.8.1 which had the modprobe
snd-emu10k1-synth freeze bug, but was able to work around this by
launching my wavetable loading script post the modprobe. Play back from my
keyboard worked great.

This is when I began to notice apps that accessed the dsp reporting that
they were locked out ( and did not produce any sound ). First would be
arts when kde started up, and then any dvd playing app ( ogle, mplayer,
xine, all of them setup to use alsa ).

Strangely though, alsaplayer still worked despite the fact that the other
apps didn't - could it be using some other way of plugin to the emu10k1
mixer ? 

Have tried upgrading to alsa-driver-1.0.7 ( which didn't play any
wavetable sounds at all - strange ), then to alsa-driver-1.0.8-rc2 ( which
does play wavetable sounds ) but none of these fixes this problem.

If I change the order of things - have artsd start up, start a dvd
playback, and then call asfxload + aconnect, then everything is mixed and
sounds great.
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----------------------------------------------------------------------
 tiwai - 01-12-05 15:16 
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Please elaborate the procedure causing the problem.
Which command sequences did the crash?

----------------------------------------------------------------------
 vinyvat - 01-12-05 18:50 
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Done a little more testing, and this bug is dependant on the size of the
SF2. the One I put in the "reproduction" notes is huge -
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=31#127 Mb whereas
if I use a smaller one the bug does not happen.

Will update with exact reproduction steps when I get from work.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
01-12-05 09:34 vinyvat        New Issue                                    
01-12-05 09:34 vinyvat        Distribution              => Debian testing  
01-12-05 09:34 vinyvat        Kernel Version            => 2.6.8.1         
01-12-05 15:16 tiwai          Note Added: 0003171                          
01-12-05 18:50 vinyvat        Note Added: 0003175                          
======================================================================




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