iohannes thanks for helping. yes, I am running JACK.
when i ran:
pdextended -channels 4
everything is okay, but when I try to change num of channles from the pd GUI, it segfault then.
debug:
[paum@bookes ~]$ gdb --args pdextended -nrt -channels 4 GNU gdb (GDB) 7.5.1 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu". For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/... Reading symbols from /usr/bin/pdextended...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/pdextended -nrt -channels 4 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000 warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7ffff7fba700 (LWP 2249)] [New Thread 0x7ffff7f39700 (LWP 2250)] [New Thread 0x7ffff7eb8700 (LWP 2251)] [New Thread 0x7ffff53d6700 (LWP 2252)] [Thread 0x7ffff7eb8700 (LWP 2251) exited] [Thread 0x7ffff7f39700 (LWP 2250) exited] [Thread 0x7ffff7fba700 (LWP 2249) exited] [New Thread 0x7ffff7fba700 (LWP 2253)] [New Thread 0x7ffff7f39700 (LWP 2254)] [New Thread 0x7ffff7eb8700 (LWP 2255)]
Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7ffff7eb8700 (LWP 2255)] 0x00000000004685f5 in ?? () (gdb) bt #0 0x00000000004685f5 in ?? () #1 0x00007ffff6f83cac in ?? () from /usr/lib/libjack.so.0 #2 0x00007ffff6f83bb4 in ?? () from /usr/lib/libjack.so.0 #3 0x00007ffff6f81aab in ?? () from /usr/lib/libjack.so.0 #4 0x00007ffff6fa0ebc in ?? () from /usr/lib/libjack.so.0 #5 0x00007ffff78c8dd2 in start_thread () from /usr/lib/libpthread.so.0 #6 0x00007ffff6ca3ced in clone () from /usr/lib/libc.so.6 (gdb)
fero.