Xlib: extension "RANDR" missing on display ":0.0". Stacktrace: at (wrapper managed-to-native) cB/a.a (bc) <0xffffffff> at cB.CloseUnit () <0x00087> at B.DoClose () <0x00013> at z.Dispose (bool) <0x0005a> at z.Dispose () <0x00015> at z.b () <0x0001b> at bh.a (bh/a) <0x0002b> at System.Collections.Generic.List`1.ForEach (System.Action`1) <0x0004b> at bh.a () <0x0008b> at cY.a () <0x0002f> at cV.a (ej,bool,bool,System.Collections.Generic.List`1) <0x0018f> at dV.a (bool,bool) <0x0007b> at dV.a (bool,bool) <0x00217> at dV.i () <0x0007b> at dV/<>c__DisplayClass52.b__51 () <0x0003b> at dV.CreateNewScopeWindow (bool) <0x00098> at at.i (object,System.EventArgs) <0x0001f> at (wrapper runtime-invoke) .runtime_invoke_void__this___object_object (object,intptr,intptr,intptr) <0xffffffff> at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&) <0xffffffff> at System.Reflection.MonoMethod.Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <0x0018b> at System.Reflection.MethodBase.Invoke (object,object[]) <0x0002a> at System.Delegate.DynamicInvokeImpl (object[]) <0x001a3> at System.MulticastDelegate.DynamicInvokeImpl (object[]) <0x0003b> at System.Delegate.DynamicInvoke (object[]) <0x00018> at GLib.Signal.ClosureInvokedCB (object,GLib.ClosureInvokedArgs) <0x0014f> at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs) <0x0002f> at GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <0x002ab> at (wrapper native-to-managed) GLib.SignalClosure.MarshalCallback (intptr,intptr,uint,intptr,intptr,intptr) <0xffffffff> at (wrapper managed-to-native) Gtk.Application.gtk_main () <0xffffffff> at Gtk.Application.Run () <0x0000b> at aG.b () <0x001bb> at i.a () <0x00041> at aG.a () <0x004a3> at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) <0xffffffff> Native stacktrace: /usr/bin/mono() [0x4983a9] /usr/bin/mono() [0x4e8daf] /usr/bin/mono() [0x41fe87] /lib/x86_64-linux-gnu/libpthread.so.0(+0xf0a0) [0x7f2b70aef0a0] /usr/local/lib/libusb-1.0.so.0(libusb_get_next_timeout+0x27) [0x7f2b5f1130b7] /usr/local/lib/libusb-1.0.so.0(+0x5274) [0x7f2b5f113274] /usr/local/lib/libusb-1.0.so.0(libusb_handle_events_timeout+0x1f) [0x7f2b5f113e8f] /opt/picoscope/lib/libps3000a.so(+0xc0894) [0x7f2b5a6aa894] /opt/picoscope/lib/libps3000a.so(+0xc0c77) [0x7f2b5a6aac77] /opt/picoscope/lib/libps3000a.so(+0x9f6e7) [0x7f2b5a6896e7] /opt/picoscope/lib/libps3000a.so(+0x8213c) [0x7f2b5a66c13c] /opt/picoscope/lib/libps3000a.so(+0x7e7fc) [0x7f2b5a6687fc] /opt/picoscope/lib/libps3000a.so(+0x5f926) [0x7f2b5a649926] /opt/picoscope/lib/libps3000a.so(+0x66bcb) [0x7f2b5a650bcb] /opt/picoscope/lib/libps3000a.so(ps3000aCloseUnit+0xa5) [0x7f2b5a602c85] [0x407f9acf] Debug info from gdb: 82 ../sysdeps/unix/syscall-template.S: No such file or directory. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7f2b5622f700 (LWP 6703)] [New Thread 0x7f2b56434700 (LWP 6702)] [New Thread 0x7f2b5263c700 (LWP 6701)] [New Thread 0x7f2b56639700 (LWP 6700)] [New Thread 0x7f2b43aa7700 (LWP 6698)] [New Thread 0x7f2b442a8700 (LWP 6695)] [New Thread 0x7f2b44aa9700 (LWP 6694)] [New Thread 0x7f2b50c38700 (LWP 6693)] [New Thread 0x7f2b51439700 (LWP 6692)] [New Thread 0x7f2b51c3a700 (LWP 6691)] [New Thread 0x7f2b5667a700 (LWP 6614)] [New Thread 0x7f2b566bb700 (LWP 6613)] [New Thread 0x7f2b56cc4700 (LWP 6612)] [New Thread 0x7f2b5fb0b700 (LWP 6608)] [New Thread 0x7f2b63f9a700 (LWP 6607)] [New Thread 0x7f2b63fdb700 (LWP 6606)] [New Thread 0x7f2b65f13700 (LWP 6605)] [New Thread 0x7f2b6e3de700 (LWP 6604)] [New Thread 0x7f2b6f751700 (LWP 6603)] [New Thread 0x7f2b6ff52700 (LWP 6602)] [New Thread 0x7f2b70753700 (LWP 6601)] 0x00007f2b70aee1fd in read () at ../sysdeps/unix/syscall-template.S:82 Id Target Id Frame 22 Thread 0x7f2b70753700 (LWP 6601) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 21 Thread 0x7f2b6ff52700 (LWP 6602) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 20 Thread 0x7f2b6f751700 (LWP 6603) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 19 Thread 0x7f2b6e3de700 (LWP 6604) "mono" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:86 18 Thread 0x7f2b65f13700 (LWP 6605) "mono" pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216 17 Thread 0x7f2b63fdb700 (LWP 6606) "mono" 0x00007f2b70aee91d in nanosleep () at ../sysdeps/unix/syscall-template.S:82 16 Thread 0x7f2b63f9a700 (LWP 6607) "mono" pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216 15 Thread 0x7f2b5fb0b700 (LWP 6608) "mono" sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 14 Thread 0x7f2b56cc4700 (LWP 6612) "mono" sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 13 Thread 0x7f2b566bb700 (LWP 6613) "mono" 0x00007f2b70830e13 in epoll_wait () at ../sysdeps/unix/syscall-template.S:82 12 Thread 0x7f2b5667a700 (LWP 6614) "mono" sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 11 Thread 0x7f2b51c3a700 (LWP 6691) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 10 Thread 0x7f2b51439700 (LWP 6692) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 9 Thread 0x7f2b50c38700 (LWP 6693) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 8 Thread 0x7f2b44aa9700 (LWP 6694) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 7 Thread 0x7f2b442a8700 (LWP 6695) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 6 Thread 0x7f2b43aa7700 (LWP 6698) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 5 Thread 0x7f2b56639700 (LWP 6700) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 4 Thread 0x7f2b5263c700 (LWP 6701) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 3 Thread 0x7f2b56434700 (LWP 6702) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 2 Thread 0x7f2b5622f700 (LWP 6703) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 * 1 Thread 0x7f2b71576740 (LWP 6600) "mono" 0x00007f2b70aee1fd in read () at ../sysdeps/unix/syscall-template.S:82 Thread 22 (Thread 0x7f2b70753700 (LWP 6601)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005e2d63 in ?? () #2 0x00000000005dcee5 in ?? () #3 0x00000000005e14a7 in ?? () #4 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #5 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 21 (Thread 0x7f2b6ff52700 (LWP 6602)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005e2d63 in ?? () #2 0x00000000005dcee5 in ?? () #3 0x00000000005e14a7 in ?? () #4 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #5 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 20 (Thread 0x7f2b6f751700 (LWP 6603)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005e2d63 in ?? () #2 0x00000000005dcee5 in ?? () #3 0x00000000005e14a7 in ?? () #4 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #5 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 19 (Thread 0x7f2b6e3de700 (LWP 6604)): #0 sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:86 #1 0x00000000005c7ac8 in mono_sem_wait () #2 0x0000000000517deb in ?? () #3 0x000000000059a216 in ?? () #4 0x00000000005c241a in ?? () #5 0x00000000005e2b64 in ?? () #6 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #7 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 18 (Thread 0x7f2b65f13700 (LWP 6605)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216 #1 0x00000000005adaa1 in ?? () #2 0x00000000005bf9ee in ?? () #3 0x0000000000599b1b in ?? () #4 0x000000004147ec38 in ?? () #5 0x0000000001055ff0 in ?? () #6 0x00007f2b6d028138 in ?? () #7 0x00007f2b65f1293f in ?? () #8 0x00007f2b6d02d0a0 in ?? () #9 0x0000000000000001 in ?? () #10 0x00007f2b65f12960 in ?? () #11 0x00007f2b65f128c0 in ?? () #12 0x0000000000000000 in ?? () Thread 17 (Thread 0x7f2b63fdb700 (LWP 6606)): #0 0x00007f2b70aee91d in nanosleep () at ../sysdeps/unix/syscall-template.S:82 #1 0x00000000005c1815 in ?? () #2 0x0000000000590eab in ?? () #3 0x000000000059a216 in ?? () #4 0x00000000005c241a in ?? () #5 0x00000000005e2b64 in ?? () #6 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #7 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 16 (Thread 0x7f2b63f9a700 (LWP 6607)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216 #1 0x00000000005adaa1 in ?? () #2 0x00000000005c036a in ?? () #3 0x0000000000599c1d in ?? () #4 0x00000000419715b0 in ?? () #5 0x00007f2b6801b030 in ?? () #6 0x00007f2b5ca9e930 in ?? () #7 0x00007f2b654dffc8 in ?? () #8 0x00007f2b63f997d0 in ?? () #9 0x00007f2b654dffc8 in ?? () #10 0x00007f2b63f997d0 in ?? () #11 0x00007f2b63f99730 in ?? () #12 0x00000000000003e8 in ?? () #13 0x000000000000cf3e in ?? () #14 0x00007f2b5ca9e930 in ?? () #15 0x00000000000003e8 in ?? () #16 0x0000000040ea7f18 in ?? () #17 0x00007f2b5ca9e930 in ?? () #18 0x0000000000000000 in ?? () Thread 15 (Thread 0x7f2b5fb0b700 (LWP 6608)): #0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 #1 0x00000000005c7bab in mono_sem_timedwait () #2 0x000000000059340f in ?? () #3 0x000000000059a216 in ?? () #4 0x00000000005c241a in ?? () #5 0x00000000005e2b64 in ?? () #6 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #7 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 14 (Thread 0x7f2b56cc4700 (LWP 6612)): #0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 #1 0x00000000005c7bab in mono_sem_timedwait () #2 0x000000000059340f in ?? () #3 0x000000000059a216 in ?? () #4 0x00000000005c241a in ?? () #5 0x00000000005e2b64 in ?? () #6 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #7 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 13 (Thread 0x7f2b566bb700 (LWP 6613)): #0 0x00007f2b70830e13 in epoll_wait () at ../sysdeps/unix/syscall-template.S:82 #1 0x00000000005916f7 in ?? () #2 0x000000000059a216 in ?? () #3 0x00000000005c241a in ?? () #4 0x00000000005e2b64 in ?? () #5 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #6 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 12 (Thread 0x7f2b5667a700 (LWP 6614)): #0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106 #1 0x00000000005c7bab in mono_sem_timedwait () #2 0x000000000059340f in ?? () #3 0x000000000059a216 in ?? () #4 0x00000000005c241a in ?? () #5 0x00000000005e2b64 in ?? () #6 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #7 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 11 (Thread 0x7f2b51c3a700 (LWP 6691)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a66df0c in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a66bc1a in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #5 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #6 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 10 (Thread 0x7f2b51439700 (LWP 6692)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a63a644 in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a69a17e in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #5 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #6 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 9 (Thread 0x7f2b50c38700 (LWP 6693)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a640115 in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #5 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 8 (Thread 0x7f2b44aa9700 (LWP 6694)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a63a644 in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a69a17e in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #5 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #6 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 7 (Thread 0x7f2b442a8700 (LWP 6695)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a640115 in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #5 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 6 (Thread 0x7f2b43aa7700 (LWP 6698)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f2b5a6a9c83 in ?? () from /opt/picoscope/lib/libps3000a.so #2 0x00007f2b5a66c3d4 in ?? () from /opt/picoscope/lib/libps3000a.so #3 0x00007f2b5a667ae0 in ?? () from /opt/picoscope/lib/libps3000a.so #4 0x00007f2b5a6a99ca in ?? () from /opt/picoscope/lib/libps3000a.so #5 0x00007f2b70ae6b50 in start_thread (arg=) at pthread_create.c:304 #6 0x00007f2b708307bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? () Thread 5 (Thread 0x7f2b56639700 (LWP 6700)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005adcab in ?? () #2 0x00000000005bfaed in ?? () #3 0x0000000000599b1b in ?? () #4 0x000000004147ec38 in ?? () #5 0x000000000144aad0 in ?? () #6 0x0000000000000000 in ?? () Thread 4 (Thread 0x7f2b5263c700 (LWP 6701)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005adcab in ?? () #2 0x00000000005bfaed in ?? () #3 0x0000000000599b1b in ?? () #4 0x000000004147ec38 in ?? () #5 0x00000000014a0910 in ?? () #6 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f2b56434700 (LWP 6702)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005adcab in ?? () #2 0x00000000005bfaed in ?? () #3 0x0000000000599b1b in ?? () #4 0x000000004147ec38 in ?? () #5 0x00000000013d3f70 in ?? () #6 0x0000000000000000 in ?? () Thread 2 (Thread 0x7f2b5622f700 (LWP 6703)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00000000005adcab in ?? () #2 0x00000000005bfaed in ?? () #3 0x0000000000599b1b in ?? () #4 0x000000004147ec38 in ?? () #5 0x00000000015100d0 in ?? () #6 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f2b71576740 (LWP 6600)): #0 0x00007f2b70aee1fd in read () at ../sysdeps/unix/syscall-template.S:82 #1 0x000000000049853b in ?? () #2 0x00000000004e8daf in ?? () #3 0x000000000041fe87 in ?? () #4 #5 libusb_get_next_timeout (ctx=0x0, tv=0x7fff3a276e40) at io.c:2097 #6 0x00007f2b5f113274 in get_next_timeout (ctx=0x0, tv=0x7fff3a276ea0, out=0x7fff3a276e70) at io.c:1886 #7 0x00007f2b5f113e8f in libusb_handle_events_timeout (ctx=0x0, tv=0x7fff3a276e40) at io.c:1929 #8 0x00007f2b5a6aa894 in ?? () from /opt/picoscope/lib/libps3000a.so #9 0x00007f2b5a6aac77 in ?? () from /opt/picoscope/lib/libps3000a.so #10 0x00007f2b5a6896e7 in ?? () from /opt/picoscope/lib/libps3000a.so #11 0x00007f2b5a66c13c in ?? () from /opt/picoscope/lib/libps3000a.so #12 0x00007f2b5a6687fc in ?? () from /opt/picoscope/lib/libps3000a.so #13 0x00007f2b5a649926 in ?? () from /opt/picoscope/lib/libps3000a.so #14 0x00007f2b5a650bcb in ?? () from /opt/picoscope/lib/libps3000a.so #15 0x00007f2b5a602c85 in ps3000aCloseUnit () from /opt/picoscope/lib/libps3000a.so #16 0x00000000407f9acf in ?? () #17 0x00007fff3a277840 in ?? () #18 0x0000000000000000 in ?? () ================================================================= Got a SIGSEGV while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application. =================================================================