I think the real error is "X11 connection rejected because of wrong authentication."  And it looks like from the DISPLAY being localhost:10.0 that you are not running it locally on your computer, but remotely.  To resolve the authentication issue, try "ssh -XY remotehost".  And once you get past that error, you'll find that remotely running ChimeraX remotely is fraught with difficulties.  We recommend running ChimeraX locallly on your computer, but if you have to run it remotely, use a VirtualGL (from virtualgl.org) solution.

HTH,

Greg

On 8/4/2021 2:57 AM, Vanessa Roy via ChimeraX-users wrote:

Hi Tom,

Thank you for your email.

Unfortunately, that doesn't work for us either, please see below:

"libxcb-xinerama0" is already installed on our server, but unfortunately the error still exists.

see below:

/~# apt list --installed | grep libxcb-xinerama0/

/WARNING: apt does not have a stable CLI interface. Use with caution in scripts./

/libxcb-xinerama0/focal,now 1.14-2 amd64 [installed] / /~# /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 0x00007f020c8a9740 (most recent call first):/ /  File "/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/chimerax/ui/gui.py", line 157 in __init__/ /  File "/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 577 in init/ /  File "/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py", line 1015 in <module>/ /  File "/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 87 in _run_code/ /  File "/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py", line 194 in _run_module_as_main/ /Aborted (core dumped)/

Could you help us resolve this issue?

Many thanks!

Best, Vanessa

On Tue, Aug 3, 2021 at 8:11 PM Tom Goddard <goddard@sonic.net mailto:goddard@sonic.net> wrote:

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@cgl.ucsf.edu
<mailto:chimerax-users@cgl.ucsf.edu>> wrote:

Hi Vanessa,
Please send ChimeraX questions to chimerax-users@cgl.ucsf.edu
<mailto:chimerax-users@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@mail.tau.ac.il <mailto:vanessaroy@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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