[chimerax-users] Error in ChimeraX application installation linux ubuntu

[Tom Goddard]

This problem where ChimeraX won't start on Linux and complains about Qt plugin xcb was discussed a few months ago

	https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html <https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html>

Apparently it means that the Linux system is missing a needed library.  And the above discussion says ChimeraX 1.2.5.1 on Linux fixed the problem.

	Tom


> On Aug 2, 2021, at 12:11 PM, Elaine Meng via ChimeraX-users <chimerax-users at cgl.ucsf.edu> wrote:
> 
> Hi Vanessa,
> Please send ChimeraX questions to chimerax-users at cgl.ucsf.edu (CC'd here, so no need to do anything this time).
> 
> Since I don't know the answer, I kept waiting for somebody else to answer your question... and didn't notice until now that you had sent it to only me.
> 
> Thanks,
> Elaine
> -----
> Elaine C. Meng, Ph.D.                       
> UCSF Chimera(X) team
> Department of Pharmaceutical Chemistry
> University of California, San Francisco
> 
>> On Aug 1, 2021, at 1:51 AM, Vanessa Roy <vanessaroy at mail.tau.ac.il> wrote:
>> 
>> Dear ChimeraX development team,
>> 
>> We encountered issues while installing ChimeraX on our server and wanted to ask whether you could help us understand what the problem is? We haven't yet found a solution to our problem. 
>> Here is the output after installation:
>> 
>> # /home/apps/chimerax-1.2.5-rc-2021.05.24/bin/ChimeraX
>> X11 connection rejected because of wrong authentication.
>> qt.qpa.xcb: could not connect to display localhost:10.0
>> qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
>> This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
>> 
>> Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
>> 
>> Fatal Python error: Aborted
>> 
>> Current thread 0x00007f479c05d740 (most recent call first):
>>  File "/home/apps/chimerax-1.1/lib/python3.7/site-packages/chimerax/ui/gui.py", line 119 in __init__
>>  File "/home/apps/chimerax-1.1/lib/python3.7/site-packages/ChimeraX_main.py", line 500 in init
>>  File "/home/apps/chimerax-1.1/lib/python3.7/site-packages/ChimeraX_main.py", line 919 in <module>
>>  File "/home/apps/chimerax-1.1/lib/python3.7/runpy.py", line 85 in _run_code
>>  File "/home/apps/chimerax-1.1/lib/python3.7/runpy.py", line 193 in _run_module_as_main
>> Aborted (core dumped)
>> 
>> We would greatly appreciate your advice on how to solve this issue.
>> 
>> Many thanks for your help!
>> 
>> Best,
>> Vanessa
>> -- 
>> Vanessa Roy
>> Gil Ast Lab
>> Department of Human Molecular Genetics and Biochemistry
>> Sackler Faculty of Medicine | Tel Aviv University
> 
> 
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