Hi, I seem to be having the same problem. I've been trying to get ChucK to run on AMD64/Linux these last few days. Tried alsa, oss and jack build options: segfaults in each case. More details: ================================================================================= 1. platform distro: Ubuntu 7.04 cpu: AMD Athlon 64 X2 Dual Core Processor 4200+ 2. chuck --version chuck version: 1.2.0.8 (dracula) exe target: linux (alsa) http://chuck.cs.princeton.edu/ 3. gdb output GNU gdb 6.6-debian Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-linux-gnu"... Using host libthread_db library "/lib/libthread_db.so.1". (gdb) run -v5 ../examples/stk/bowed.ck Starting program: /home/michel/src/chuck-1.2.0.8/src/chuck -v5 ../examples/stk/bowed.ck [Thread debugging using libthread_db enabled] [New Thread 47062529307568 (LWP 12822)] [chuck]:(2:SYSTEM): setting log level to: 5 (INFORM)... [chuck]:(2:SYSTEM): initializing virtual machine... [chuck]:(2:SYSTEM): | behavior: HALT [chuck]:(2:SYSTEM): | allocating shreduler... [chuck]:(2:SYSTEM): | allocating messaging buffers... [chuck]:(2:SYSTEM): | real-time audio: YES [chuck]:(2:SYSTEM): | mode: CALLBACK [chuck]:(2:SYSTEM): | sample rate: 48000 [chuck]:(2:SYSTEM): | buffer size: 512 [chuck]:(2:SYSTEM): | num buffers: 8 [chuck]:(2:SYSTEM): | devices adc: 0 dac: 0 (default 0) [chuck]:(2:SYSTEM): | channels in: 2 out: 2 [chuck]:(2:SYSTEM): initializing compiler... [chuck]:(3:SEVERE): | initializing type checker... [chuck]:(3:SEVERE): | | adding base classes... [chuck]:(3:SEVERE): | | | class 'object' [chuck]:(3:SEVERE): | | | class 'array' [chuck]:(3:SEVERE): | | | class 'string' [chuck]:(3:SEVERE): | | | class 'ugen' [chuck]:(3:SEVERE): | | | class 'shred' [chuck]:(3:SEVERE): | | | class 'event' [chuck]:(3:SEVERE): | | | class 'class' [chuck]:(3:SEVERE): | initializing emitter... [chuck]:(3:SEVERE): | loading built-in modules... [chuck]:(3:SEVERE): | | module osc... [chuck]:(3:SEVERE): | | module xxx... [chuck]:(3:SEVERE): | | module filter... [chuck]:(3:SEVERE): | | module STK... [chuck]:(3:SEVERE): | | class 'machine'... [chuck]:(3:SEVERE): | | class 'std'... [chuck]:(5:INFORM): | | initializing KBHitManager... [New Thread 1082132800 (LWP 12825)] [chuck]:(3:SEVERE): | | class 'math'... [chuck]:(3:SEVERE): | | class 'opsc'... [chuck]:(2:SYSTEM): type dependency resolution: MANUAL [chuck]:(2:SYSTEM): initializing synthesis engine... [chuck]:(3:SEVERE): | initializing 'dac'... [chuck]:(3:SEVERE): | initializing 'adc'... [chuck]:(3:SEVERE): | initializing 'blackhole'... [chuck]:(2:SYSTEM): | initializing 'real-time' audio... [chuck]:(5:INFORM): | | initializing callback... [chuck]:(5:INFORM): | | starting kb loop... [New Thread 1090525504 (LWP 12826)] [chuck]:(3:SEVERE): | allocating buffers for 512 x 2 samples... [chuck]:(3:SEVERE): starting compilation... [chuck]:(2:SYSTEM): starting listener on port: 8888... [New Thread 1098918208 (LWP 12827)] [chuck]:(2:SYSTEM): running virtual machine... [chuck]:(3:SEVERE): | initializing audio buffers... [chuck]:(3:SEVERE): | virtual machine running... Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 47062529307568 (LWP 12822)] 0x0000000000491420 in Instrmnt_ctor () ================================================================================= Hopefully this can be sorted out. I'm really interested in trying out ChucK. Thanks, Michel