Re: aplay/arecord hang at 44100 Hz

[Josh Buhl <uzs33d@uni-bonn.de>]

Here's a backtrace from gdb:


(gdb) run
Starting program: 
/home/josh/programs/debian/alsa-utils-0.9.0rc7/aplay/aplay ./track_01.wav
[New Thread 16384 (LWP 1875)]
Playing WAVE './track_01.wav' : Signed 16 bit Little Endian, Rate 44100 
Hz, Stereo

Program received signal SIGTSTP, Stopped (user).
[Switching to Thread 16384 (LWP 1875)]
0x401c7224 in ioctl () from /lib/libc.so.6
(gdb) bt
#0  0x401c7224 in ioctl () from /lib/libc.so.6
#1  0x400947a8 in snd_seq_hw_ops () from /usr/lib/libasound.so.2
#2  0x40057912 in snd_pcm_hw_refine () from /usr/lib/libasound.so.2
#3  0x40055918 in snd_pcm_hw_param_set () from /usr/lib/libasound.so.2
#4  0x40056058 in snd_pcm_hw_param_refine_multiple () from 
/usr/lib/libasound.so.2
#5  0x40063eb7 in _snd_pcm_rate_open () from /usr/lib/libasound.so.2
#6  0x40057698 in snd_pcm_hw_refine_slave () from /usr/lib/libasound.so.2
#7  0x40064625 in _snd_pcm_rate_open () from /usr/lib/libasound.so.2
#8  0x40057912 in snd_pcm_hw_refine () from /usr/lib/libasound.so.2
#9  0x40054723 in snd_pcm_hw_param_set_first () from /usr/lib/libasound.so.2
#10 0x40055d57 in snd_pcm_hw_param_set_near () from /usr/lib/libasound.so.2
#11 0x4004fc4e in snd_pcm_hw_params_set_rate_near () from 
/usr/lib/libasound.so.2
#12 0x0804cdc7 in set_params () at aplay.c:800
#13 0x0804f1b6 in playback_go (fd=7, loaded=0, count=4294967295, 
rtype=2, name=0xbffffca0 "./track_01.wav")
     at aplay.c:1686
#14 0x0804f5d6 in playback (name=0xbffffca0 "./track_01.wav") at 
aplay.c:1807
#15 0x0804c092 in main (argc=2, argv=0xbffffb54) at aplay.c:514
(gdb)




Takashi Iwai wrote:
> At Tue, 11 Feb 2003 17:47:26 +0100,
> Josh Buhl wrote:
> 
>>Hi,
>>
>>
>>>i guess it's a bug of either alsa-lib or aplay, not of the driver.
>>>could you check at which user function the operation stops?
>>>
>>
>>I'll be happy to provide any debugging info I can, but I'm not exactly 
>>sure what you mean by which user function. The error occurs for both 
>>user functions aplay and arecord, or do you mean something else?
> 
> 
> please run aplay from gdb and break the operation to see what the
> program is doing there.
> 
> or, a traditional debugging via printf() can be enough :)
> 
> 
> Takashi
> 
> 
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