Probable crash in garbage collection

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Linux-5.15.0-76-generic-x86_64-with-glibc2.31
ChimeraX Version: 1.6.1 (2023-05-09 17:57:07 UTC)
Description
Last time you used ChimeraX it crashed.
Please describe steps that led to the crash here.
Fatal Python error: Segmentation fault

Current thread 0x00007f2d9295c740 (most recent call first):
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/numpy/core/_internal.py", line 283 in data_as
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/atomic/molc.py", line 322 in pointer
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/atomic/molc.py", line 197 in get_prop
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/atomic/structure.py", line 1805 in _update_graphics_if_needed
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/triggerset.py", line 138 in invoke
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/triggerset.py", line 237 in _activate
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/triggerset.py", line 206 in activate
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/triggerset.py", line 382 in activate_trigger
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/graphics/view.py", line 283 in check_for_drawing_change
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/updateloop.py", line 65 in draw_new_frame
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/updateloop.py", line 139 in _redraw_timer_callback
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/open_command/dialog.py", line 135 in show_open_file_dialog
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/open_command/dialog.py", line 107 in 
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/ui/gui.py", line 275 in event_loop
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/__main__.py", line 892 in init
  File "/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/chimerax/core/__main__.py", line 1043 in 
  File "/usr/lib/ucsf-chimerax/lib/python3.9/runpy.py", line 87 in _run_code
  File "/usr/lib/ucsf-chimerax/lib/python3.9/runpy.py", line 197 in _run_module_as_main
===== Log before crash start =====
UCSF ChimeraX version: 1.6.1 (2023-05-09)  
© 2016-2023 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open /home/cclab04/Downloads/5a43.pdb format pdb

5a43.pdb title:  
Crystal structure of A dual topology fluoride ion channel. [more info...]  
  
Chain information for 5a43.pdb #1  
---  
Chain | Description | UniProt  
A B | fluoride channel | B7LI20_ECO45 1-126  
C D | monobodies |  
  
Non-standard residues in 5a43.pdb #1  
---  
DMU — decyl-β-D-maltopyranoside (decylmaltoside)  
F — fluoride ion  
NA — sodium ion  
  

> ui tool show "Show Sequence Viewer"

> sequence chain /A /B

Alignment identifier is 1  

> select /A-B:2-30,34-58,62-70,72-78,80-93,95-125

1770 atoms, 1804 bonds, 230 residues, 1 model selected  

> ui tool show "Modeller Comparative"

> select /A/B

1983 atoms, 2028 bonds, 4 pseudobonds, 259 residues, 2 models selected  

> save /home/cclab04/research/myresearch/PDB/channel_00.pdb relModel #1

> close

> open /home/cclab04/research/myresearch/PDB/channel_00.pdb

channel_00.pdb title:  
Crystal structure of A dual topology fluoride ion channel. [more info...]  
  
Chain information for channel_00.pdb #1  
---  
Chain | Description | UniProt  
A B | fluoride channel | B7LI20_ECO45 1-126  
C D | monobodies |  
  
Non-standard residues in channel_00.pdb #1  
---  
DMU — decyl-β-D-maltopyranoside (decylmaltoside)  
F — fluoride ion  
NA — sodium ion  
  

> close

> open /home/cclab04/Downloads/5a43.pdb format pdb

5a43.pdb title:  
Crystal structure of A dual topology fluoride ion channel. [more info...]  
  
Chain information for 5a43.pdb #1  
---  
Chain | Description | UniProt  
A B | fluoride channel | B7LI20_ECO45 1-126  
C D | monobodies |  
  
Non-standard residues in 5a43.pdb #1  
---  
DMU — decyl-β-D-maltopyranoside (decylmaltoside)  
F — fluoride ion  
NA — sodium ion  
  

> select /A/B

1983 atoms, 2028 bonds, 4 pseudobonds, 259 residues, 2 models selected  

> save /home/cclab04/research/myresearch/PDB/channel_00.pdb selectedOnly true
> relModel #1

> open /home/cclab04/research/myresearch/PDB/channel_00.pdb

Summary of feedback from opening
/home/cclab04/research/myresearch/PDB/channel_00.pdb  
---  
warnings | Start residue of secondary structure not found: SHEET 1 1 1 THR C 7
THR C 15 0  
Start residue of secondary structure not found: SHEET 2 2 1 SER C 18 ASP C 24
0  
Start residue of secondary structure not found: SHEET 3 3 1 THR C 29 GLU C 39
0  
Start residue of secondary structure not found: SHEET 4 4 1 GLN C 47 PRO C 52
0  
Start residue of secondary structure not found: SHEET 5 5 1 THR C 57 SER C 61
0  
11 messages similar to the above omitted  
  
channel_00.pdb title:  
Crystal structure of A dual topology fluoride ion channel. [more info...]  
  
Chain information for channel_00.pdb #2  
---  
Chain | Description | UniProt  
A B | fluoride channel | B7LI20_ECO45 1-126  
  
Non-standard residues in channel_00.pdb #2  
---  
DMU — decyl-β-D-maltopyranoside (decylmaltoside)  
F — fluoride ion  
NA — sodium ion  
  

> close


===== Log before crash end =====

Log:
UCSF ChimeraX version: 1.6.1 (2023-05-09)  
© 2016-2023 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  




OpenGL version: 4.6 (Core Profile) Mesa 22.2.0-devel (git-08da37035f)
OpenGL renderer: Mesa Intel(R) UHD Graphics 630 (CFL GT2)
OpenGL vendor: Intel

Python: 3.9.11
Locale: en_US.UTF-8
Qt version: PyQt6 6.4.2, Qt 6.4.2
Qt runtime version: 6.4.3
Qt platform: xcb

XDG_SESSION_TYPE=x11
DESKTOP_SESSION=ubuntu
XDG_SESSION_DESKTOP=ubuntu
XDG_CURRENT_DESKTOP=ubuntu:GNOME
DISPLAY=:0
Manufacturer: HP
Model: HP ProDesk 600 G4 PCI MT IDS APJ
OS: Ubuntu 20.04 Focal Fossa
Architecture: 64bit ELF
Virtual Machine: none
CPU: 12 Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Cache Size: 12288 KB
Memory:
	              total        used        free      shared  buff/cache   available
	Mem:          7.5Gi       3.4Gi       470Mi       564Mi       3.6Gi       3.3Gi
	Swap:           9Gi       316Mi       9.7Gi

Graphics:
	00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 630 (Desktop) [8086:3e92]	
	DeviceName: Onboard IGD	
	Subsystem: Hewlett-Packard Company UHD Graphics 630 (Desktop) [103c:83ed]

Installed Packages:
    alabaster: 0.7.13
    appdirs: 1.4.4
    asttokens: 2.2.1
    Babel: 2.12.1
    backcall: 0.2.0
    beautifulsoup4: 4.11.2
    blockdiag: 3.0.0
    build: 0.10.0
    certifi: 2023.5.7
    cftime: 1.6.2
    charset-normalizer: 3.1.0
    ChimeraX-AddCharge: 1.5.9.1
    ChimeraX-AddH: 2.2.5
    ChimeraX-AlignmentAlgorithms: 2.0.1
    ChimeraX-AlignmentHdrs: 3.3.1
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 2.9.3
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.0.3
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.43.10
    ChimeraX-AtomicLibrary: 10.0.6
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.3.2
    ChimeraX-BasicActions: 1.1.2
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 2.1.2
    ChimeraX-BondRot: 2.0.1
    ChimeraX-BugReporter: 1.0.1
    ChimeraX-BuildStructure: 2.8
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.2.2
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.3.2
    ChimeraX-ChangeChains: 1.0.2
    ChimeraX-CheckWaters: 1.3.1
    ChimeraX-ChemGroup: 2.0.1
    ChimeraX-Clashes: 2.2.4
    ChimeraX-ColorActions: 1.0.3
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5.3
    ChimeraX-CommandLine: 1.2.5
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.6.1
    ChimeraX-CoreFormats: 1.1
    ChimeraX-coulombic: 1.4.2
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0.1
    ChimeraX-DataFormats: 1.2.3
    ChimeraX-Dicom: 1.2
    ChimeraX-DistMonitor: 1.4
    ChimeraX-DockPrep: 1.1.1
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ESMFold: 1.0
    ChimeraX-FileHistory: 1.0.1
    ChimeraX-FunctionKey: 1.0.1
    ChimeraX-Geometry: 1.3
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1.1
    ChimeraX-Hbonds: 2.4
    ChimeraX-Help: 1.2.1
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-Label: 1.1.7
    ChimeraX-LinuxSupport: 1.0.1
    ChimeraX-ListInfo: 1.1.1
    ChimeraX-Log: 1.1.5
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.8.2
    ChimeraX-Map: 1.1.4
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0.1
    ChimeraX-MapFilter: 2.0.1
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1.1
    ChimeraX-Markers: 1.0.1
    ChimeraX-Mask: 1.0.2
    ChimeraX-MatchMaker: 2.0.12
    ChimeraX-MDcrds: 2.6
    ChimeraX-MedicalToolbar: 1.0.2
    ChimeraX-Meeting: 1.0.1
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.12
    ChimeraX-MMTF: 2.2
    ChimeraX-Modeller: 1.5.9
    ChimeraX-ModelPanel: 1.3.7
    ChimeraX-ModelSeries: 1.0.1
    ChimeraX-Mol2: 2.0
    ChimeraX-Mole: 1.0
    ChimeraX-Morph: 1.0.2
    ChimeraX-MouseModes: 1.2
    ChimeraX-Movie: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nifti: 1.0
    ChimeraX-NRRD: 1.0
    ChimeraX-Nucleotides: 2.0.3
    ChimeraX-OpenCommand: 1.10.1
    ChimeraX-PDB: 2.7.2
    ChimeraX-PDBBio: 1.0
    ChimeraX-PDBLibrary: 1.0.2
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1
    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.1
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.1
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 3.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.1
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.8.3
    ChimeraX-Shape: 1.0.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.1.1
    ChimeraX-ShowSequences: 1.0.1
    ChimeraX-SideView: 1.0.1
    ChimeraX-Smiles: 2.1
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.10.3
    ChimeraX-STL: 1.0.1
    ChimeraX-Storm: 1.0
    ChimeraX-StructMeasure: 1.1.2
    ChimeraX-Struts: 1.0.1
    ChimeraX-Surface: 1.0.1
    ChimeraX-SwapAA: 2.0.1
    ChimeraX-SwapRes: 2.2.1
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.1.2
    ChimeraX-ToolshedUtils: 1.2.1
    ChimeraX-Topography: 1.0
    ChimeraX-Tug: 1.0.1
    ChimeraX-UI: 1.28.4
    ChimeraX-uniprot: 2.2.2
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDockX: 1.2
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0.1
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0.2
    ChimeraX-WebServices: 1.1.1
    ChimeraX-Zone: 1.0.1
    colorama: 0.4.6
    comm: 0.1.3
    contourpy: 1.0.7
    cxservices: 1.2.2
    cycler: 0.11.0
    Cython: 0.29.33
    debugpy: 1.6.7
    decorator: 5.1.1
    distro: 1.7.0
    docutils: 0.19
    executing: 1.2.0
    filelock: 3.9.0
    fonttools: 4.39.3
    funcparserlib: 1.0.1
    grako: 3.16.5
    h5py: 3.8.0
    html2text: 2020.1.16
    idna: 3.4
    ihm: 0.35
    imagecodecs: 2022.9.26
    imagesize: 1.4.1
    importlib-metadata: 6.6.0
    ipykernel: 6.21.1
    ipython: 8.10.0
    ipython-genutils: 0.2.0
    ipywidgets: 8.0.6
    jedi: 0.18.2
    Jinja2: 3.1.2
    jupyter-client: 8.0.2
    jupyter-core: 5.3.0
    jupyterlab-widgets: 3.0.7
    kiwisolver: 1.4.4
    line-profiler: 4.0.2
    lxml: 4.9.2
    lz4: 4.3.2
    MarkupSafe: 2.1.2
    matplotlib: 3.6.3
    matplotlib-inline: 0.1.6
    msgpack: 1.0.4
    nest-asyncio: 1.5.6
    netCDF4: 1.6.2
    networkx: 2.8.8
    nibabel: 5.0.1
    nptyping: 2.5.0
    numexpr: 2.8.4
    numpy: 1.23.5
    openvr: 1.23.701
    packaging: 23.1
    ParmEd: 3.4.3
    parso: 0.8.3
    pep517: 0.13.0
    pexpect: 4.8.0
    pickleshare: 0.7.5
    Pillow: 9.3.0
    pip: 23.0
    pkginfo: 1.9.6
    platformdirs: 3.5.0
    prompt-toolkit: 3.0.38
    psutil: 5.9.4
    ptyprocess: 0.7.0
    pure-eval: 0.2.2
    pycollada: 0.7.2
    pydicom: 2.3.0
    Pygments: 2.14.0
    pynrrd: 1.0.0
    PyOpenGL: 3.1.5
    PyOpenGL-accelerate: 3.1.5
    pyparsing: 3.0.9
    pyproject-hooks: 1.0.0
    PyQt6-commercial: 6.4.2
    PyQt6-Qt6: 6.4.3
    PyQt6-sip: 13.4.1
    PyQt6-WebEngine-commercial: 6.4.0
    PyQt6-WebEngine-Qt6: 6.4.3
    python-dateutil: 2.8.2
    pytz: 2023.3
    pyzmq: 25.0.2
    qtconsole: 5.4.0
    QtPy: 2.3.1
    RandomWords: 0.4.0
    requests: 2.28.2
    scipy: 1.9.3
    setuptools: 67.4.0
    sfftk-rw: 0.7.3
    six: 1.16.0
    snowballstemmer: 2.2.0
    sortedcontainers: 2.4.0
    soupsieve: 2.4.1
    sphinx: 6.1.3
    sphinx-autodoc-typehints: 1.22
    sphinxcontrib-applehelp: 1.0.4
    sphinxcontrib-blockdiag: 3.0.0
    sphinxcontrib-devhelp: 1.0.2
    sphinxcontrib-htmlhelp: 2.0.1
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 1.0.3
    sphinxcontrib-serializinghtml: 1.1.5
    stack-data: 0.6.2
    tables: 3.7.0
    tcia-utils: 1.2.0
    tifffile: 2022.10.10
    tinyarray: 1.2.4
    tomli: 2.0.1
    tornado: 6.3.1
    traitlets: 5.9.0
    typing-extensions: 4.5.0
    tzdata: 2023.3
    urllib3: 1.26.15
    wcwidth: 0.2.6
    webcolors: 1.12
    wheel: 0.38.4
    wheel-filename: 1.4.1
    widgetsnbextension: 4.0.7
    zipp: 3.15.0

[pett]

Was trying to access structure._graphics_changeds

[Tom Goddard]

Crash was in at a line of our molc.py code doing numpy calls to cast a pointer for ctypes. In the past we see on Mac this has been in garbage collection that often happens in the numpy. So no telling what really caused the crash. The "close" command was the last logged.