[ALSA - utils 0001304]: Speaker test hangs

[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=1304> 
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Reported By:                herby
Assigned To:                
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Project:                    ALSA - utils
Issue ID:                   1304
Category:                   speakertest
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             08-03-2005 02:46 CEST
Last Modified:              08-12-2005 15:47 CEST
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Summary:                    Speaker test hangs
Description: 
After applying the patch to the library that took out the check for a
proper "start_threshold" (file .../alsa-lib/src/pcm/pcm.c around lines 834
or so), I attempted to try a speaker test again.  It hung right after
outputting "0 - Front Left".  I did an strace and the results are included
in the file attached.  I attempted to vary the sample rate (to 44.1 kHz)
with little luck.  The wierd thing is that I can execute 'aplay' (with the
default device) and get a '.wav' file to play nicely.  I can even get a
multi-channel (4 to be exact) ".wav" file to go thru 'aplay'.  Why
speaker-test doesn't work is beyond me.  The problem is that I appear to
use similar techniques in my own programming as speaker-test, and my
program doesen't do that well.  Being as how speaker-test IS part of ALSA,
I thought I would submit the bug report against it.

If other tests need be preformed, I'd be VERY happy to do them.
======================================================================

----------------------------------------------------------------------
 herby - 08-12-05 08:12 
----------------------------------------------------------------------
More info:
When speaker-test stalls (on the Revo 7.1) no interrupts get generated
(from /proc/interrupts).  When I use 'aplay' (which generates sound!),
interrupts get generated (go figure).  When I use the VIA 8233
(motherboard audio) speaker-test all goes well.  It seems that there is
something wierd in the buffer counts, or something on the Revo 7.1 card. 
Here is some data from /proc/asound/card0/pcm0p/sub0 that might help:
[tsw sub0]$ more *
::::::::::::::
hw_params
::::::::::::::
access: MMAP_INTERLEAVED
format: S32_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 3764
buffer_size: 15052
tick_time: 1000
::::::::::::::
info
::::::::::::::
card: 0
device: 0
subdevice: 0
stream: PLAYBACK
id: ICE1724
name: ICE1724
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 0
::::::::::::::
prealloc
::::::::::::::
256
::::::::::::::
status
::::::::::::::
state: PREPARED
trigger_time: 0.000000000
tstamp      : 1123826957.287182000
delay       : 0
avail       : 3760
avail_max   : 0
-----
hw_ptr      : 0
appl_ptr    : 11292
::::::::::::::
sw_params
::::::::::::::
tstamp_mode: NONE
period_step: 1
sleep_min: 0
avail_min: 3764
xfer_align: 1
start_threshold: 15052
stop_threshold: 15052
silence_threshold: 0
silence_size: 0
boundary: 1972895744

(this was taken while the speaker-test was stalled out)

Hope this helps!

----------------------------------------------------------------------
 tiwai - 08-12-05 15:47 
----------------------------------------------------------------------
ICE1724 has the restriction regarding period and buffer size alignment. 
It's aligned to 32byte.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
08-03-05 02:46 herby          New Issue                                    
08-03-05 02:46 herby          File Added: speaker-trace                    
08-03-05 12:18 tiwai          Note Added: 0005621                          
08-04-05 03:21 herby          Note Added: 0005638                          
08-04-05 14:10 jcdutton       Note Added: 0005648                          
08-04-05 20:21 herby          Note Added: 0005652                          
08-09-05 06:58 herby          Note Added: 0005718                          
08-12-05 08:12 herby          Note Added: 0005765                          
08-12-05 15:47 tiwai          Note Added: 0005773                          
======================================================================




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