Spyder crashes with segmentation fault on startup in Anaconda 4.5.0

DEVELOPER NOTE: This error is now fixed in Spyder >= 3.3.0. To resolve it, please update to the current version with conda update spyder from the Anaconda Prompt/Terminal/command line, which also fixes other bugs and adds new features, enhancement and usability/documentation improvements. Thanks!

Hi, after updating Spyder on Anaconda it crashes on startup. The splash screen shows up before terminating with a segmentation fault. It can be reproduced in a minimal Anaconda environment with:

# Create minimal environment:
~$ conda --version
conda 4.5.0
~$ conda create --name tst
~$ conda activate tst
~$ conda install spyder
~$ rm -rf ~/.config/spyder-py3
~$ SPYDER_DEBUG="3" spyder --reset
*** Reset Spyder settings to defaults ***
removing: /home/brunn/.config/spyder-py3/spyder.ini
removing: /home/brunn/.config/spyder-py3/langconfig

# Run spyder:
~$ SPYDER_DEBUG="3" spyder
Start of MainWindow constructor
End of MainWindow constructor
*** Start of MainWindow setup ***
  ..core actions
  ..toolbars
  ..tools
  ..sift?
  ..plugin: internal console
    ..internal console: initializing
  ..plugin: working directory
Loading help...
Loading outline explorer...
Loading editor...
Introspection Plugin Loaded: rope
Introspection Plugin Loaded: jedi
Introspection Plugin Loaded: fallback
setfocusto: <spyder.widgets.sourcecode.codeeditor.CodeEditor object at 0x7f99901c3948>
current_changed: 0 <spyder.widgets.sourcecode.codeeditor.CodeEditor object at 0x7f99901c3948> 140297524492616
Added thread <spyder.widgets.editor.AnalysisThread object at 0x7f9990155ee8> to queue
Added thread <spyder.widgets.editor.AnalysisThread object at 0x7f9990155f78> to queue
  ..widgets
Loading file explorer...
Loading history plugin...
Loading online help...
Loading project explorer...
Updating queue:
    started: 0
    pending: 2
===>starting: <spyder.widgets.editor.AnalysisThread object at 0x7f9990155ee8>
Updating queue:
    started: 1
    pending: 1
===>starting: <spyder.widgets.editor.AnalysisThread object at 0x7f9990155f78>
Loading namespace browser...
Updating queue:
    started: 0
    pending: 0
Updating queue:
    started: 0
    pending: 0
Loading IPython console...
Setting up main window...
Setting up window...
*** End of MainWindow setup ***
Speicherzugriffsfehler (means: segmentation fault)

I’m not quite sure how to continue debugging. Investigating the core dump did not yield in any results. I’m using Debian unstable. The conda package info returns:

spyder 3.2.8 py36_0
-------------------
file name   : spyder-3.2.8-py36_0.tar.bz2
name        : spyder
version     : 3.2.8
build string: py36_0
build number: 0
channel     : https://repo.anaconda.com/pkgs/main/linux-64
size        : 2.6 MB
arch        : None
constrains  : ()
license     : MIT
md5         : 9ad003181d3ce2134a6f024b86a2cdab
platform    : None
subdir      : linux-64
timestamp   : 1521092348360
url         : https://repo.anaconda.com/pkgs/main/linux-64/spyder-3.2.8-py36_0.tar.bz2
dependencies:
    chardet >=2.0
    cloudpickle
    jedi >=0.9
    nbconvert
    numpydoc
    pickleshare
    psutil
    pycodestyle
    pyflakes
    pygments >=2.0
    pylint
    pyqt
    python >=3.6,<3.7.0a0
    pyzmq
    qtawesome >=0.4.1
    qtconsole >=4.2
    qtpy >=1.2.0
    rope >=0.9.4
    sphinx

[vollbier]

Following a suggestion in #3326, I was able to work around the problem by doing

conda install pyopengl

This problem is also addressed in PR #7029. Thanks.

[jaxankey]

Same issue for me on Ubuntu 18.04. Doing a conda install pyopengl fixed it for me as well. Here is the output, which may shed some light.

conda install pyopengl
Solving environment: done

## Package Plan ##

  environment location: /home/jack/Anaconda3

  added / updated specs: 
    - pyopengl


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    pyopengl-3.1.1a1           |      np113py36_0         1.1 MB
    numpy-1.13.3               |   py36hdbf6ddf_4         3.9 MB
    freeglut-2.8.1             |                0         554 KB
    ------------------------------------------------------------
                                           Total:         5.6 MB

The following NEW packages will be INSTALLED:

    freeglut: 2.8.1-0              
    pyopengl: 3.1.1a1-np113py36_0  

The following packages will be DOWNGRADED:

    numpy:    1.14.2-py36hdbf6ddf_1 --> 1.13.3-py36hdbf6ddf_4