[Linuxsampler-devel] Audio out device channel increase bug

[Garett S. <shu...@co...>]

Hello, I have found that if I create an alsa audio output device and 
then try to increase the channels I get the following segfault. However 
I can create an alsa audio output device with more than the default 
channels (like 4 for example), then set the channels down to 2, then 
set the channels back to 4. But, if I try to then set the channels to 6 
I get the segfault. This is not an issue for me as I really have no 
need to change the number of channel after I have created the device. 
HTH. Let me know if there is more info you might need. -Garett

SET AUDIO_OUTPUT_DEVICE_PARAMETER 0 CHANNELS=6
 >>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<
Showing stack trace...
No debugger found
Attaching to program: /usr/local/bin/linuxsampler, process 26949
Reading symbols from 
/usr/local/lib/linuxsampler/liblinuxsampler.so.0...done.
Loaded symbols for /usr/local/lib/linuxsampler/liblinuxsampler.so.0
Reading symbols from /usr/local/lib/linuxsampler/libgig.so.0...done.
Loaded symbols for /usr/local/lib/linuxsampler/libgig.so.0
Reading symbols from /usr/lib/libjack-0.71.2.so.0...done.
Loaded symbols for /usr/lib/libjack-0.71.2.so.0
Reading symbols from /lib/librt.so.1...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /usr/lib/libasound.so.2...done.
Loaded symbols for /usr/lib/libasound.so.2
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libpthread.so.0...done.
[New Thread 16384 (LWP 26947)]
[New Thread 32769 (LWP 26948)]
[New Thread 16386 (LWP 26949)]
[New Thread 32771 (LWP 26951)]
[New Thread 49156 (LWP 26952)]
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /usr/lib/libstdc++.so.5...done.
Loaded symbols for /usr/lib/libstdc++.so.5
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
0x403ecc36 in nanosleep () from /lib/libc.so.6
(gdb) --- Stacktrace
#0  0x403ecc36 in nanosleep () from /lib/libc.so.6
#1  0x00000000 in ?? ()
--- Symbols
#0  0x00000000 in ?? ()
  > > > >No symbol table info available.
---
Error snd_pcm_writei failed: Interrupted system call
Alsa: Audio output error, exiting.
Detaching from program: /usr/local/bin/linuxsampler, process 26949
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/usr/local/lib/python2.3/site-packages/sampler.py", line 64, in 
set_audio_out_channels
     print sampler.read_until("\n")
   File "/usr/lib/python2.3/telnetlib.py", line 324, in read_until
     return self.read_very_lazy()
   File "/usr/lib/python2.3/telnetlib.py", line 400, in read_very_lazy
     raise EOFError, 'telnet connection closed'
EOFError: telnet connection closed