Hi Stephen,

  Our linux ChimeraX expert is on vacation but here is an idea.  The problem is that the Qt window toolkit can't start and that is almost surely a missing system library, probably one that the Qt xcb plugin shared library needs.  I see a ChimeraX mailing list discussion of this problem here

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

Supposedly the ChimeraX 1.2.5-1 builds on the download page solved that issue.  If you are using the "generic Linux" ChimeraX distribution I'd suggest instead using the Ubuntu 18.04 ChimeraX version which is a .deb file for debian 10 according to the ChimeraX download page.  The advantage of using the .deb distribution is that it uses the Debian package manager to assure the needed libraries are installed, while the "generic Linux" ChimeraX .tar.gz file tries to include  the needed libraries but not always successfully since different linux distros include different system libraries.

Tom




On Oct 8, 2021, at 12:04 PM, Stephen P. Molnar via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

I am attempting the installation of ChimeraC-1.2.5(chimerax-1.2.5-rc-2021.05.24) on my up to date Debian v-1064 bit platform. I  open the tar.gz package without any difficulties, but when I attempt to execute ChmieraX i get the following:

comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$ ./ChimeraX
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 0x00007fcb3dafd740 (most recent call first):
 File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/chimerax/ui/gui.py", line 157 in __init__
 File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 577 in init
 File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 1015 in <module>
 File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 87 in _run_code
 File "/home/comp/Apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 194 in _run_module_as_main
Aborted
comp@AbNormal:~/Apps/chimerax-1.2.5-rc-2021.05.24/bin$

xcb is installed, but the Debian v-10 default version of python is 3.7. Is this the problem?

Is there a solution? Reinstalling did not fix the problem.

Thanks in advance.

--
Stephen P. Molnar, Ph.D.
www.molecular-modeling.net
614.312.7528 (c)
Skype:  smolnar1

_______________________________________________
ChimeraX-users mailing list
ChimeraX-users@cgl.ucsf.edu
Manage subscription:
https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users