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#20268 closed defect (nonchimerax)

glDrawBuffer: invalid operation

Reported by:	brandon.scott@…	Owned by:	Tom Goddard
Priority:	normal	Milestone:
Component:	Graphics	Version:
Keywords:		Cc:
Blocked By:		Blocking:
Notify when closed:		Platform:	all
Project:	ChimeraX

Description

The following bug report has been submitted:
Platform:        Linux-5.14.0-611.49.1.el9_7.x86_64-x86_64-with-glibc2.34
ChimeraX Version: 1.12.dev202605040019 (2026-05-04 00:19:19 UTC)
Description
Opening demo data 6ts0. I am running chimerax on an amazon dcv client.

Log:
Startup Messages  
---  
warning | GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.  
  
UCSF ChimeraX version: 1.12.dev202605040019 (2026-05-04)  
© 2016-2026 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 6ts0 format mmcif fromDatabase pdbe_bio

Summary of feedback from opening 6ts0 fetched from pdbe_bio  
---  
warnings | Missing or incorrect sequence information. Inferred polymer connectivity.  
Atom H is not in the residue template for SER /A:6  
Atom H is not in the residue template for SER /AA:6  
Atom H is not in the residue template for SER /AB:6  
Atom H is not in the residue template for SER /AC:6  
Atom H is not in the residue template for SER /AD:6  
4 messages similar to the above omitted  
Too many hydrogens missing from residue template(s) to warn about  
notes | Combining 4 symmetry atoms into HOH /MA:415 O  
Combining 4 symmetry atoms into FE /FA:205 FE  
Combining 4 symmetry atoms into HOH /MA:318 O  
Combining 3 symmetry atoms into FE /HM:207 FE  
Combining 3 symmetry atoms into FE /HA:207 FE  
Combining 3 symmetry atoms into FE /HB:207 FE  
Combining 3 symmetry atoms into FE /HO:207 FE  
Combining 3 symmetry atoms into FE /EM:204 FE  
11 messages similar to the above omitted  
Combining 4 symmetry atoms into HOH /ME:415 O  
Combining 4 symmetry atoms into FE /FE:205 FE  
Combining 4 symmetry atoms into HOH /ME:318 O  
Combining 4 symmetry atoms into HOH /MI:415 O  
Combining 4 symmetry atoms into FE /FI:205 FE  
7 messages similar to the above omitted  
Combining 3 symmetry atoms into HOH /MC:449 O  
Combining 3 symmetry atoms into HOH /MN:449 O  
Combining 3 symmetry atoms into HOH /ML:449 O  
Combining 3 symmetry atoms into HOH /M:449 O  
Combining 3 symmetry atoms into FE /JC:209 FE  
11 messages similar to the above omitted  
Combining 4 symmetry atoms into HOH /M:318 O  
Combining 4 symmetry atoms into FE /F:205 FE  
Combining 4 symmetry atoms into HOH /M:415 O  
  
6ts0 bioassembly 1 title:  
Crystal structure of human L ferritin (HuLf) triple variant E60A-E61A-E64A
Fe(III)-loaded for 30 minutes [more info...]  
  
Chain information for 6ts0 bioassembly 1 #1  
---  
Chain | Description  
A AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW | Ferritin light chain  
  
Non-standard residues in 6ts0 bioassembly 1 #1  
---  
CD — (CD)  
FE — (FE)  
O — (O)  
  
6ts0 bioassembly 1 mmCIF Assemblies  
---  
1| author_defined_assembly  
  
840 atoms have alternate locations. Control/examine alternate locations with
Altloc Explorer [start tool...] or the altlocs command.  
Opened 1 biological assemblies for 6ts0  
An error occurred in drawing the scene. Redrawing graphics is now stopped to
avoid a continuous stream of error messages. To restart graphics use the
command "graphics restart" after changing the settings that caused the error.  
  
GLError(  
err = 1282,  
description = b'invalid operation',  
baseOperation = glDrawBuffer,  
cArguments = (GL_NONE,)  
)  
  
Traceback (most recent call last):  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/core/updateloop.py", line 84, in
draw_new_frame  
view.draw(check_for_changes = False)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 188, in
draw  
self._draw_scene(camera, drawings)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 227, in
_draw_scene  
shadow, multishadow = self._compute_shadowmaps(opaque_drawings,
transparent_drawings, camera)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 634, in
_compute_shadowmaps  
multishadow_enabled = r.multishadow.use_multishadow_map(shadow_drawings)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 1722, in
use_multishadow_map  
self._start_rendering_multishadowmap(center, radius, size)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 1805, in
_start_rendering_multishadowmap  
fb = r.start_depth_render(self._multishadow_map_framebuffer,  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 1400, in
start_depth_render  
if not fb.activate():  
^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 2410, in
activate  
fbo = self.framebuffer_id  
^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 2406, in
framebuffer_id  
self._fbo = fbo = self._create_framebuffer()  
^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 2242, in
_create_framebuffer  
fbo = self._create_fbo(self.color_texture or self._color_rb,  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 2270, in
_create_fbo  
GL.glDrawBuffer(GL.GL_NONE)  
File "src/errorchecker.pyx", line 59, in
OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError  
OpenGL.error.GLError: GLError(  
err = 1282,  
description = b'invalid operation',  
baseOperation = glDrawBuffer,  
cArguments = (GL_NONE,)  
)  
  
Exception ignored in: <function Framebuffer.__del__ at 0x7fcaa9d9b920>  
Traceback (most recent call last):  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 2319, in
__del__  
raise OpenGLError('OpenGL framebuffer "%s" was not deleted before
graphics.Framebuffer destroyed'  
chimerax.graphics.opengl.OpenGLError: OpenGL framebuffer "depth map" was not
deleted before graphics.Framebuffer destroyed  
Exception ignored in: <function Texture.__del__ at 0x7fcaa647aa20>  
Traceback (most recent call last):  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 3179, in
__del__  
raise OpenGLError('OpenGL texture was not deleted before graphics.Texture
destroyed')  
chimerax.graphics.opengl.OpenGLError: OpenGL texture was not deleted before
graphics.Texture destroyed  

> graphics driver

OpenGL version: 3.3.0 NVIDIA 580.159.03  
OpenGL renderer: NVIDIA RTX PRO 6000 Blackwell Server Edition/PCIe/SSE2  
OpenGL vendor: NVIDIA Corporation  

> close #

Expected a models specifier or a keyword  

> lighting soft

> lighting simple

> graphics restart

An error occurred in drawing the scene. Redrawing graphics is now stopped to
avoid a continuous stream of error messages. To restart graphics use the
command "graphics restart" after changing the settings that caused the error.  
  
GLError(  
err = 1286,  
description = b'invalid framebuffer operation',  
baseOperation = glClear,  
cArguments = (16640,)  
)  
  
Traceback (most recent call last):  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/core/updateloop.py", line 84, in
draw_new_frame  
view.draw(check_for_changes = False)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 188, in
draw  
self._draw_scene(camera, drawings)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 239, in
_draw_scene  
camera.draw_background(vnum, r)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/camera.py", line 195, in
draw_background  
render.draw_background()  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 1264, in
draw_background  
GL.glClear(flags)  
File "src/errorchecker.pyx", line 59, in
OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError  
OpenGL.error.GLError: GLError(  
err = 1286,  
description = b'invalid framebuffer operation',  
baseOperation = glClear,  
cArguments = (16640,)  
)  
  

> lighting simple

> graphics restart

An error occurred in drawing the scene. Redrawing graphics is now stopped to
avoid a continuous stream of error messages. To restart graphics use the
command "graphics restart" after changing the settings that caused the error.  
  
GLError(  
err = 1286,  
description = b'invalid framebuffer operation',  
baseOperation = glClear,  
cArguments = (16640,)  
)  
  
Traceback (most recent call last):  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/core/updateloop.py", line 84, in
draw_new_frame  
view.draw(check_for_changes = False)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 188, in
draw  
self._draw_scene(camera, drawings)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/view.py", line 239, in
_draw_scene  
camera.draw_background(vnum, r)  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/camera.py", line 195, in
draw_background  
render.draw_background()  
File "/home/SDSMT.LOCAL/bscott/software/chimerax/usr/libexec/UCSF-ChimeraX-
daily/lib/python3.11/site-packages/chimerax/graphics/opengl.py", line 1264, in
draw_background  
GL.glClear(flags)  
File "src/errorchecker.pyx", line 59, in
OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError  
OpenGL.error.GLError: GLError(  
err = 1286,  
description = b'invalid framebuffer operation',  
baseOperation = glClear,  
cArguments = (16640,)  
)  
  




OpenGL version: 3.3.0 NVIDIA 580.159.03
OpenGL renderer: NVIDIA RTX PRO 6000 Blackwell Server Edition/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

Python: 3.11.13
Locale: en_US.UTF-8
Qt version: PyQt6 6.10.2, Qt 6.10.0
Qt runtime version: 6.10.1
Qt platform: xcb

XDG_SESSION_TYPE=x11
DESKTOP_SESSION=
XDG_SESSION_DESKTOP=
XDG_CURRENT_DESKTOP=GNOME
DCV_GL_DISPLAY=:0.0
DISPLAY=:2
VGL_DISPLAY=egl
Manufacturer: Dell Inc.
Model: PowerEdge R770
OS: Red Hat Enterprise Linux 9.7
Architecture: 64bit ELF
Virtual Machine: none
CPU: 96 Intel(R) Xeon(R) 6527P
Cache Size: 147456 KB
Memory:
	               total        used        free      shared  buff/cache   available
	Mem:           503Gi        14Gi       476Gi        55Mi        15Gi       488Gi
	Swap:           15Gi        74Mi        15Gi

Graphics:
	0000:3f:00.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. Integrated Matrox G200eW3 Graphics Controller [102b:0536] (rev 08)	
	DeviceName: Embedded Video	
	Subsystem: Dell Device [1028:0c65]

Installed Packages:
    accessible-pygments: 0.0.5
    aiohappyeyeballs: 2.6.1
    aiohttp: 3.13.1
    aiosignal: 1.4.0
    alabaster: 1.0.0
    annotated-types: 0.7.0
    anyio: 4.13.0
    appdirs: 1.4.4
    asttokens: 3.0.1
    attrs: 26.1.0
    babel: 2.18.0
    beautifulsoup4: 4.13.5
    blockdiag: 3.0.0
    blosc2: 4.1.2
    bs4: 0.0.2
    build: 1.3.0
    certifi: 2026.4.22
    cftime: 1.6.5
    charset-normalizer: 3.4.7
    ChimeraX-AddCharge: 1.5.20
    ChimeraX-AddH: 2.2.8
    ChimeraX-AlignmentAlgorithms: 2.0.2
    ChimeraX-AlignmentHdrs: 3.6.2
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 3.2
    ChimeraX-AlphaFold: 1.0.1
    ChimeraX-AltlocExplorer: 1.2
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Animations: 1.0
    ChimeraX-Aniso: 1.3.2
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.67.1
    ChimeraX-AtomicLibrary: 14.4
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.4
    ChimeraX-BasicActions: 1.1.3
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 3.0.0
    ChimeraX-Boltz: 1.1
    ChimeraX-BondRot: 2.0.4
    ChimeraX-BugReporter: 1.0.2
    ChimeraX-BuildStructure: 2.13.1
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.6.0
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.4.1
    ChimeraX-ChangeChains: 1.1
    ChimeraX-CheckWaters: 1.5
    ChimeraX-ChemGroup: 2.0.2
    ChimeraX-Clashes: 2.4
    ChimeraX-Cluster: 1.0
    ChimeraX-ColorActions: 1.0.5
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5.8
    ChimeraX-CommandLine: 1.3.1
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.12.dev202605040019
    ChimeraX-CoreFormats: 1.2
    ChimeraX-coulombic: 1.4.5
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0.1
    ChimeraX-DataFormats: 1.2.4
    ChimeraX-Dicom: 1.2.7
    ChimeraX-DistMonitor: 1.4.2
    ChimeraX-DockPrep: 1.2.1
    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: 1.4.1
    ChimeraX-Hbonds: 2.5.3
    ChimeraX-Help: 1.3
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.4
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-IUPAC: 1.0
    ChimeraX-KVFinder: 1.8.2
    ChimeraX-Label: 1.5
    ChimeraX-LightingGUI: 1.0
    ChimeraX-LinuxSupport: 1.0.1
    ChimeraX-ListInfo: 1.3.1
    ChimeraX-Log: 1.2.2
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.9.3
    ChimeraX-Map: 1.3
    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-MatchAlign: 1.1
    ChimeraX-MatchMaker: 2.4
    ChimeraX-MCopy: 1.0
    ChimeraX-MCPServer: 0.2.0
    ChimeraX-MDcrds: 2.19
    ChimeraX-MedicalToolbar: 1.1
    ChimeraX-Meeting: 1.0.1
    ChimeraX-Minimize: 1.3.8
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.16
    ChimeraX-MMTF: 2.2
    ChimeraX-ModelArchive: 1.0
    ChimeraX-Modeller: 1.5.23
    ChimeraX-ModelPanel: 1.6.1
    ChimeraX-ModelSeries: 1.0.1
    ChimeraX-Mol2: 2.0.3
    ChimeraX-Mole: 1.0
    ChimeraX-Morph: 1.0.2
    ChimeraX-MouseModes: 1.2
    ChimeraX-Movie: 1.0.1
    ChimeraX-MutationScores: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nifti: 1.2
    ChimeraX-NMRSTAR: 1.0.2
    ChimeraX-NRRD: 1.2
    ChimeraX-Nucleotides: 2.0.3
    ChimeraX-OpenCommand: 1.15.4
    ChimeraX-OpenFold: 1.0
    ChimeraX-OrthoPick: 1.0.1
    ChimeraX-PDB: 2.7.13
    ChimeraX-PDBBio: 1.0.1
    ChimeraX-PDBLibrary: 1.0.5
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1.4
    ChimeraX-ProfileGrids: 1.6
    ChimeraX-PubChem: 2.2
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.2
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.8.2
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.3.3
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 4.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.2
    ChimeraX-Scenes: 0.3.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.3
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-Segmentations: 3.5.12
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.18
    ChimeraX-Shape: 1.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.2.1
    ChimeraX-ShowSequences: 1.0.3
    ChimeraX-SideView: 1.0.1
    ChimeraX-SimilarStructures: 1.0.1
    ChimeraX-Smiles: 2.1.2
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SNFG: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.19.3
    ChimeraX-STL: 1.0.1
    ChimeraX-Storm: 1.0
    ChimeraX-StructMeasure: 1.2.1
    ChimeraX-Struts: 1.0.1
    ChimeraX-Surface: 1.0.1
    ChimeraX-SwapAA: 2.0.1
    ChimeraX-SwapRes: 2.5.3
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-TaskManager: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.2.4
    ChimeraX-ToolshedUtils: 1.2.4
    ChimeraX-Topography: 1.0
    ChimeraX-ToQuest: 1.0
    ChimeraX-Tug: 1.0.1
    ChimeraX-UI: 1.50.6
    ChimeraX-Umap: 1.0
    ChimeraX-uniprot: 2.3.2
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDock: 1.6.2
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0.1
    ChimeraX-vrml: 1.0
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0.2
    ChimeraX-WebServices: 1.1.5
    ChimeraX-Zone: 1.0.1
    click: 8.3.3
    colorama: 0.4.6
    comm: 0.2.3
    contourpy: 1.3.3
    coverage: 7.13.5
    cxservices: 1.2.3
    cycler: 0.12.1
    Cython: 3.2.4
    debugpy: 1.8.20
    decorator: 5.2.1
    distro: 1.9.0
    docutils: 0.21.2
    executing: 2.2.1
    filelock: 3.19.1
    fonttools: 4.62.1
    frozenlist: 1.8.0
    funcparserlib: 2.0.0a0
    glfw: 2.10.0
    grako: 3.16.5
    h11: 0.16.0
    h5py: 3.16.0
    html2text: 2025.4.15
    httpcore: 1.0.9
    httpx: 0.28.1
    httpx-sse: 0.4.3
    idna: 3.13
    ihm: 2.2
    imagecodecs: 2024.6.1
    imagesize: 2.0.0
    iniconfig: 2.3.0
    ipykernel: 7.1.0
    ipython: 9.9.0
    ipython_pygments_lexers: 1.1.1
    jedi: 0.19.2
    Jinja2: 3.1.6
    jsonschema: 4.26.0
    jsonschema-specifications: 2025.9.1
    jupyter_client: 8.8.0
    jupyter_core: 5.9.1
    kiwisolver: 1.5.0
    line_profiler: 5.0.0
    lxml: 6.0.2
    lz4: 4.3.2
    Markdown: 3.8.2
    MarkupSafe: 3.0.3
    matplotlib: 3.10.7
    matplotlib-inline: 0.2.1
    mcp: 1.18.0
    msgpack: 1.1.1
    multidict: 6.7.1
    narwhals: 2.20.0
    ndindex: 1.10.1
    nest-asyncio: 1.6.0
    netCDF4: 1.6.5
    networkx: 3.3
    nibabel: 5.2.0
    nptyping: 2.5.0
    numexpr: 2.14.1
    numpy: 1.26.4
    nvidia-nvjitlink-cu12: 12.9.86
    OpenMM: 8.4.0
    OpenMM-CUDA-12: 8.4.0
    openvr: 1.26.701
    packaging: 25.0
    ParmEd: 4.2.2
    parso: 0.8.7
    pep517: 0.13.1
    pexpect: 4.9.0
    pickleshare: 0.7.5
    pillow: 11.3.0
    pip: 25.2
    pkginfo: 1.12.1.2
    platformdirs: 4.9.6
    plotly: 6.7.0
    pluggy: 1.6.0
    prompt_toolkit: 3.0.52
    propcache: 0.4.1
    psutil: 7.0.0
    ptyprocess: 0.7.0
    pure_eval: 0.2.3
    py-cpuinfo: 9.0.0
    pybind11: 3.0.1
    pycollada: 0.8
    pydantic: 2.13.3
    pydantic-settings: 2.14.0
    pydantic_core: 2.46.3
    pydata-sphinx-theme: 0.17.1
    pydicom: 2.4.4
    Pygments: 2.18.0
    pynmrstar: 3.5.1
    pynrrd: 1.0.0
    PyOpenGL: 3.1.10
    PyOpenGL-accelerate: 3.1.10
    pyopenxr: 1.1.4501
    pyparsing: 3.3.2
    pyproject_hooks: 1.2.0
    PyQt6-commercial: 6.10.2
    PyQt6-Qt6: 6.10.1
    PyQt6-WebEngine-commercial: 6.10.0
    PyQt6-WebEngine-Qt6: 6.10.1
    PyQt6_sip: 13.10.3
    pytest: 9.0.3
    pytest-cov: 7.1.0
    python-dateutil: 2.9.0.post0
    python-dotenv: 1.2.2
    python-multipart: 0.0.27
    pyzmq: 27.1.0
    qtconsole: 5.7.0
    QtPy: 2.4.3
    qtshim: 1.2.2
    RandomWords: 0.4.0
    referencing: 0.37.0
    requests: 2.32.5
    roman-numerals: 4.1.0
    rpds-py: 0.30.0
    scipy: 1.14.0
    setuptools: 80.9.0
    sfftk-rw: 0.8.1
    six: 1.17.0
    snowballstemmer: 3.0.1
    sortedcontainers: 2.4.0
    soupsieve: 2.8.3
    Sphinx: 9.0.4
    sphinx-autodoc-typehints: 3.6.1
    sphinxcontrib-applehelp: 2.0.0
    sphinxcontrib-blockdiag: 3.0.0
    sphinxcontrib-devhelp: 2.0.0
    sphinxcontrib-htmlhelp: 2.1.0
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 2.0.0
    sphinxcontrib-serializinghtml: 2.0.0
    sse-starlette: 3.4.1
    stack-data: 0.6.3
    starlette: 1.0.0
    superqt: 0.7.6
    tables: 3.10.2
    tcia_utils: 3.2.1
    tifffile: 2025.3.13
    tinyarray: 1.2.5
    tornado: 6.5.5
    tqdm: 4.67.3
    traitlets: 5.14.3
    typing-inspection: 0.4.2
    typing_extensions: 4.15.0
    Unidecode: 1.4.0
    urllib3: 2.6.3
    uvicorn: 0.46.0
    wcwidth: 0.7.0
    webcolors: 24.11.1
    wheel: 0.45.1
    wheel-filename: 1.4.2
    yarl: 1.23.0

Change History (2)

comment:1 by Eric Pettersen, 7 days ago

Component:	Unassigned → Graphics
Owner:	set to Tom Goddard
Platform:	→ all
Project:	→ ChimeraX
Status:	new → assigned
Summary:	ChimeraX bug report submission → glDrawBuffer: invalid operation

comment:2 by Tom Goddard, 7 days ago

Resolution:	→ nonchimerax
Status:	assigned → closed

This error is caused by a DCV failure, Desktop Cloud Visualization, which is a remote display technology. Remote display using OpenGL 3D graphics often has problems. As we say on our ChimeraX system requirements page (https://www.cgl.ucsf.edu/chimerax/system_requirements.html) we don't support remote display because those protocols are so erratic. Remote display can work, but there is nothing ChimeraX can do to fix the failures, the errors come from your computer's OpenGL graphics driver failing to function correctly with DCV.

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