Hello. On my old computer, and also on the far newer, faster one, when switching windows, orca sometimes crashes. But, here, I get a backtrace, and can paste it. I had this problem twice, so I will paste two backtraces. 1: Fatal Python error: Segmentation fault Stack (most recent call first): File "/usr/lib/python3.6/site-packages/pyatspi/Accessibility.py", line 184 in <lambda> File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line 264 in _queuePrintln Started Process Core Dump (PID 15799/UID 0). File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line 338 in _dequeue File "/usr/lib/python3.6/site-packages/pyatspi/registry.py", line 155 in start File "/usr/lib/python3.6/site-packages/orca/orca.py", line 561 in start File "/usr/lib/python3.6/site-packages/orca/orca.py", line 712 in main File "/usr/bin/orca", line 269 in main File "/usr/bin/orca", line 272 in <module> Process 935 (orca) of user 1000 dumped core. Stack trace of thread 935: #0 0x00007fd90dbe4ea0 raise (libpthread.so.0) #1 0x00007fd90dbe4fe0 __restore_rt (libpthread.so.0) #2 0x00007fd909161376 atspi_accessible_get_parent (libatspi.so.0) #3 0x00007fd909161619 atspi_accessible_get_application (libatspi.so.0) #4 0x00007fd90b82e1c8 ffi_call_unix64 (libffi.so.6) #5 0x00007fd90b82dc2a ffi_call (libffi.so.6) #6 0x00007fd90c1f697c n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #7 0x00007fd90c1f8428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #8 0x00007fd90c1ec1b9 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #9 0x00007fd90d48c84c _PyObject_FastCallDict (libpython3.6m.so.1.0) #10 0x00007fd90d437b86 n/a (libpython3.6m.so.1.0) #11 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #12 0x00007fd90d437f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0) #13 0x00007fd90d4527d3 n/a (libpython3.6m.so.1.0) #14 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0) #15 0x00007fd90d45a13e n/a (libpython3.6m.so.1.0) #16 0x00007fd90d469e9d _PyObject_GenericGetAttrWithDict (libpython3.6m.so.1.0) #17 0x00007fd90d3f3df9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #18 0x00007fd90d436291 n/a (libpython3.6m.so.1.0) #19 0x00007fd90d43778a n/a (libpython3.6m.so.1.0) #20 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #21 0x00007fd90d3f4ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #22 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #23 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #24 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #25 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0) #26 0x00007fd90c1f43dc n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #27 0x00007fd90b82dfbf ffi_closure_unix64_inner (libffi.so.6) #28 0x00007fd90b82e330 ffi_closure_unix64 (libffi.so.6) #29 0x00007fd90ba7b45a g_main_context_dispatch (libglib-2.0.so.0) #30 0x00007fd90ba7b810 n/a (libglib-2.0.so.0) #31 0x00007fd90ba7bb32 g_main_loop_run (libglib-2.0.so.0) #32 0x00007fd909167aac atspi_event_main (libatspi.so.0) #33 0x00007fd90b82e1c8 ffi_call_unix64 (libffi.so.6) #34 0x00007fd90b82dc2a ffi_call (libffi.so.6) #35 0x00007fd90c1f697c n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #36 0x00007fd90c1f8428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #37 0x00007fd90d48c84c _PyObject_FastCallDict (libpython3.6m.so.1.0) #38 0x00007fd90d437b86 n/a (libpython3.6m.so.1.0) #39 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #40 0x00007fd90d436629 n/a (libpython3.6m.so.1.0) #41 0x00007fd90d43778a n/a (libpython3.6m.so.1.0) #42 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #43 0x00007fd90d3f4ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #44 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #45 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #46 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #47 0x00007fd90d435963 n/a (libpython3.6m.so.1.0) #48 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #49 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #50 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #51 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #52 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #53 0x00007fd90d437f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0) #54 0x00007fd90d3f3a5b PyEval_EvalCode (libpython3.6m.so.1.0) #55 0x00007fd90d4bcdc2 n/a (libpython3.6m.so.1.0) #56 0x00007fd90d4bf62d PyRun_FileExFlags (libpython3.6m.so.1.0) #57 0x00007fd90d4bf817 PyRun_SimpleFileExFlags (libpython3.6m.so.1.0) #58 0x00007fd90d4b46f1 Py_Main (libpython3.6m.so.1.0) #59 0x0000000000400a5d main (python3.6) #60 0x00007fd90d84f511 __libc_start_main (libc.so.6) #61 0x0000000000400b9a _start (python3.6) Stack trace of thread 939: #0 0x00007fd90d91167d poll (libc.so.6) #1 0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0) #2 0x00007fd90ba7b8bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fd90ba7b901 n/a (libglib-2.0.so.0) #4 0x00007fd90baa3175 n/a (libglib-2.0.so.0) #5 0x00007fd90dbda2e7 start_thread (libpthread.so.0) #6 0x00007fd90d91b54f __clone (libc.so.6) Stack trace of thread 948: #0 0x00007fd90d91167d poll (libc.so.6) #1 0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0) #2 0x00007fd90ba7b8bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fd9031b14bd n/a (libdconfsettings.so) #4 0x00007fd90baa3175 n/a (libglib-2.0.so.0) #5 0x00007fd90dbda2e7 start_thread (libpthread.so.0) #6 0x00007fd90d91b54f __clone (libc.so.6) Stack trace of thread 949: #0 0x00007fd90d91167d poll (libc.so.6) #1 0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0) #2 0x00007fd90ba7bb32 g_main_loop_run (libglib-2.0.so.0) #3 0x00007fd90b35b446 n/a (libgio-2.0.so.0) #4 0x00007fd90baa3175 n/a (libglib-2.0.so.0) #5 0x00007fd90dbda2e7 start_thread (libpthread.so.0) #6 0x00007fd90d91b54f __clone (libc.so.6) Stack trace of thread 1008: #0 0x00007fd90dbe42df recv (libpthread.so.0) #1 0x00007fd90a08ef96 n/a (_socket.cpython-36m-x86_64-linux-gnu.so) #2 0x00007fd90a0902f3 n/a (_socket.cpython-36m-x86_64-linux-gnu.so) #3 0x00007fd90d42891f _PyCFunction_FastCallDict (libpython3.6m.so.1.0) #4 0x00007fd90d437a0f n/a (libpython3.6m.so.1.0) #5 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #6 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #7 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #8 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #9 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #10 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #11 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #12 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #13 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #14 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #15 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0) #16 0x00007fd90d3f557e _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #17 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #18 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #19 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #20 0x00007fd90d43753a n/a (libpython3.6m.so.1.0) #21 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0) #22 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #23 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #24 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #25 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #26 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0) #27 0x00007fd90d4b31e2 n/a (libpython3.6m.so.1.0) #28 0x00007fd90dbda2e7 start_thread (libpthread.so.0) #29 0x00007fd90d91b54f __clone (libc.so.6) 2: Fatal Python error: Segmentation fault Stack (most recent call first): File "/usr/lib/python3.6/site-packages/pyatspi/Accessibility.py", line 184 in <lambda> File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line 264 in _queuePrintln File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line 338 in _dequeue File "/usr/lib/python3.6/site-packages/pyatspi/registry.py", line 155 in start File "/usr/lib/python3.6/site-packages/orca/orca.py", line 561 in start File "/usr/lib/python3.6/site-packages/orca/orca.py", line 712 in main File "/usr/bin/orca", line 269 in main File "/usr/bin/orca", line 272 in <module> Started Process Core Dump (PID 10067/UID 0). Process 5153 (orca) of user 1000 dumped core. Stack trace of thread 5153: #0 0x00007fac6e651ea0 raise (libpthread.so.0) #1 0x00007fac6e651fe0 __restore_rt (libpthread.so.0) #2 0x00007fac69bcb376 atspi_accessible_get_parent (libatspi.so.0) #3 0x00007fac69bcb619 atspi_accessible_get_application (libatspi.so.0) #4 0x00007fac6c29b1c8 ffi_call_unix64 (libffi.so.6) #5 0x00007fac6c29ac2a ffi_call (libffi.so.6) #6 0x00007fac6cc6397c n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #7 0x00007fac6cc65428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #8 0x00007fac6cc591b9 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #9 0x00007fac6def984c _PyObject_FastCallDict (libpython3.6m.so.1.0) #10 0x00007fac6dea4b86 n/a (libpython3.6m.so.1.0) #11 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #12 0x00007fac6dea4f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0) #13 0x00007fac6debf7d3 n/a (libpython3.6m.so.1.0) #14 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0) #15 0x00007fac6dec713e n/a (libpython3.6m.so.1.0) #16 0x00007fac6ded6e9d _PyObject_GenericGetAttrWithDict (libpython3.6m.so.1.0) #17 0x00007fac6de60df9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #18 0x00007fac6dea3291 n/a (libpython3.6m.so.1.0) #19 0x00007fac6dea478a n/a (libpython3.6m.so.1.0) #20 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #21 0x00007fac6de61ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #22 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #23 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #24 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #25 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0) #26 0x00007fac6cc613dc n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #27 0x00007fac6c29afbf ffi_closure_unix64_inner (libffi.so.6) #28 0x00007fac6c29b330 ffi_closure_unix64 (libffi.so.6) #29 0x00007fac6c4e845a g_main_context_dispatch (libglib-2.0.so.0) #30 0x00007fac6c4e8810 n/a (libglib-2.0.so.0) #31 0x00007fac6c4e8b32 g_main_loop_run (libglib-2.0.so.0) #32 0x00007fac69bd1aac atspi_event_main (libatspi.so.0) #33 0x00007fac6c29b1c8 ffi_call_unix64 (libffi.so.6) #34 0x00007fac6c29ac2a ffi_call (libffi.so.6) #35 0x00007fac6cc6397c n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #36 0x00007fac6cc65428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so) #37 0x00007fac6def984c _PyObject_FastCallDict (libpython3.6m.so.1.0) #38 0x00007fac6dea4b86 n/a (libpython3.6m.so.1.0) #39 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #40 0x00007fac6dea3629 n/a (libpython3.6m.so.1.0) #41 0x00007fac6dea478a n/a (libpython3.6m.so.1.0) #42 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #43 0x00007fac6de61ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #44 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #45 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #46 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #47 0x00007fac6dea2963 n/a (libpython3.6m.so.1.0) #48 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #49 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #50 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #51 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #52 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #53 0x00007fac6dea4f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0) #54 0x00007fac6de60a5b PyEval_EvalCode (libpython3.6m.so.1.0) #55 0x00007fac6df29dc2 n/a (libpython3.6m.so.1.0) #56 0x00007fac6df2c62d PyRun_FileExFlags (libpython3.6m.so.1.0) #57 0x00007fac6df2c817 PyRun_SimpleFileExFlags (libpython3.6m.so.1.0) #58 0x00007fac6df216f1 Py_Main (libpython3.6m.so.1.0) #59 0x0000000000400a5d main (python3.6) #60 0x00007fac6e2bc511 __libc_start_main (libc.so.6) #61 0x0000000000400b9a _start (python3.6) Stack trace of thread 5156: #0 0x00007fac6e37e67d poll (libc.so.6) #1 0x00007fac6c4e87a6 n/a (libglib-2.0.so.0) #2 0x00007fac6c4e8b32 g_main_loop_run (libglib-2.0.so.0) #3 0x00007fac6bdc8446 n/a (libgio-2.0.so.0) #4 0x00007fac6c510175 n/a (libglib-2.0.so.0) #5 0x00007fac6e6472e7 start_thread (libpthread.so.0) #6 0x00007fac6e38854f __clone (libc.so.6) Stack trace of thread 5154: #0 0x00007fac6e37e67d poll (libc.so.6) #1 0x00007fac6c4e87a6 n/a (libglib-2.0.so.0) #2 0x00007fac6c4e88bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fac6c4e8901 n/a (libglib-2.0.so.0) #4 0x00007fac6c510175 n/a (libglib-2.0.so.0) #5 0x00007fac6e6472e7 start_thread (libpthread.so.0) #6 0x00007fac6e38854f __clone (libc.so.6) Stack trace of thread 5155: #0 0x00007fac6e37e67d poll (libc.so.6) #1 0x00007fac6c4e87a6 n/a (libglib-2.0.so.0) #2 0x00007fac6c4e88bc g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fac63bf84bd n/a (libdconfsettings.so) #4 0x00007fac6c510175 n/a (libglib-2.0.so.0) #5 0x00007fac6e6472e7 start_thread (libpthread.so.0) #6 0x00007fac6e38854f __clone (libc.so.6) Stack trace of thread 5176: #0 0x00007fac6e6512df recv (libpthread.so.0) #1 0x00007fac6aafbf96 n/a (_socket.cpython-36m-x86_64-linux-gnu.so) #2 0x00007fac6aafd2f3 n/a (_socket.cpython-36m-x86_64-linux-gnu.so) #3 0x00007fac6de9591f _PyCFunction_FastCallDict (libpython3.6m.so.1.0) #4 0x00007fac6dea4a0f n/a (libpython3.6m.so.1.0) #5 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #6 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #7 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #8 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #9 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #10 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #11 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #12 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #13 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #14 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #15 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0) #16 0x00007fac6de6257e _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #17 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #18 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #19 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #20 0x00007fac6dea453a n/a (libpython3.6m.so.1.0) #21 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0) #22 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0) #23 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0) #24 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0) #25 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0) #26 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0) #27 0x00007fac6df201e2 n/a (libpython3.6m.so.1.0) #28 0x00007fac6e6472e7 start_thread (libpthread.so.0) #29 0x00007fac6e38854f __clone (libc.so.6) Also, although this does not give a crash, I often get the following: atspi_accessible_set_cache_mask: assertion 'accessible == accessible->parent.app->root' failed
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