On Jun 21, 2018, at 2:04 PM, Greg Couch <gregc@cgl.ucsf.edu> wrote:

(This is really a question for the chimerax-users mailing list, not the chimera-users one.)

If you can wait a week or so, I'll have a ChimeraX .deb package for Ubuntu 16.04 (and another for 18.04).

But to answer your question, you do not need a system-wide replacement of Qt5.  libQt5core.so.5 is in CHIMERAX/lib/python3.6/site-packages/PyQt5/Qt/lib/libQt5Core.so.5, where CHIMERAX is where ChimeraX was installed.  So add that directory to the LD_LIBRARY_PATH environment variable and rerun ldd on libqxcb.so.  And please let me know what you find out so I can make sure the .deb package avoids that problem.

    Regards,

    Greg

On 06/21/2018 10:34 AM, Petr Leiman wrote:

Dear ChimeraX users and Developers,

ChimeraX v. 0.5 or 0.6 would not start on our stock Ubuntu 16.04 machines. The error message is as follows:

This application failed to start because it could not find or load the Qt platform plugin "xcb"

in "".

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.

Reinstalling the application may fix this problem.

Fatal Python error: Aborted

Current thread 0x000014f406ce7740 (most recent call first):

  File "/usr/local/lbbs/chimerax/current/lib/python3.6/site-packages/chimerax/ui/gui.py", line 93 in __init__

  File "/usr/local/lbbs/chimerax/current/lib/python3.6/site-packages/ChimeraX_main.py", line 485 in init

  File "/usr/local/lbbs/chimerax/current/lib/python3.6/site-packages/ChimeraX_main.py", line 788 in <module>

  File "/usr/local/lbbs/chimerax/current/lib/python3.6/runpy.py", line 85 in _run_code

  File "/usr/local/lbbs/chimerax/current/lib/python3.6/runpy.py", line 193 in _run_module_as_main

Aborted (core dumped)

A few more errors while checking for missing libraries (ldd) of ChimeraX-supplied libqxcb.so, libqxcb-glx-integration.so or libqxcb-egl-integration.so

/usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.9' not found

/usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5' not found

/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: version `Qt_5_PRIVATE_API' not found

/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5: version `Qt_5' not found

/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5

Do I need to do a system-wide replacement of Qt5 for a different flavor (OpenGLES)?

Thanks,

Petr

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