[chimerax-users] [Chimera-users] ChimeraX won't start on Ubuntu 16.04

[Paul Buscemi]

Greg, 

Will the Ubuntu 18.04 be CUDA capable  ?

Regards
Paul

> On Jun 21, 2018, at 2:04 PM, Greg Couch <gregc at 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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