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

[gregc at cgl.ucsf.edu]

ChimeraX does not come with CUDA, it has to already be installed on your system. And ChimeraX doesn't directly use CUDA or OpenCL yet. But extensions, like Tristan Croll's ISOLDE, which in turn uses OpenMM which uses CUDA or OpenCL, would benefit.

 Does that answer your question?

 Greg

June 22, 2018 8:02 AM, "Paul Buscemi" <busce004 at umn.edu (mailto:busce004 at umn.edu?to=%22Paul%20Buscemi%22%20<busce004 at umn.edu>)> wrote:
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 (mailto: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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