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<p>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.</p>
<p> HTH,</p>
<p> Greg<br>
</p>
<div class="moz-cite-prefix">On 8/4/2021 2:57 AM, Vanessa Roy via
ChimeraX-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAK4X0BXPyzovvzmYuO798HVpgPDsvetHbMRYvVu4goRvnqWBCw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi Tom,
<div><br>
</div>
<div>Thank you for your email.</div>
<div><br>
</div>
<div>Unfortunately, that doesn't work for us either, please see
below:</div>
<div><br>
</div>
<div>"libxcb-xinerama0" is already installed on our server, but
unfortunately the error still exists.<br>
</div>
<div><br>
see below:<br>
<br>
<span style="color:rgb(255,0,0)"><em>~# apt list --installed |
grep libxcb-xinerama0</em></span><br>
<br>
<span style="color:rgb(255,0,0)"><em>WARNING: apt does not
have a stable CLI interface. Use with caution in scripts.</em></span><br>
<br>
<span style="color:rgb(255,0,0)"><em>libxcb-xinerama0/focal,now
1.14-2 amd64 [installed]<br>
</em></span><br>
<span style="color:rgb(255,0,0)"><em>~#
/home/apps/chimerax-1.2.5-rc-2021.05.24/bin/ChimeraX</em></span><span
class="gmail-im" style="color:rgb(80,0,80)"><br>
<span style="color:rgb(255,0,0)"><em>X11 connection rejected
because of wrong authentication.</em></span><br>
<span style="color:rgb(255,0,0)"><em>qt.qpa.xcb: could not
connect to display localhost:10.0</em></span><br>
<span style="color:rgb(255,0,0)"><em>qt.qpa.plugin: Could
not load the Qt platform plugin "xcb" in "" even though
it was found.</em></span><br>
<span style="color:rgb(255,0,0)"><em>This application failed
to start because no Qt platform plugin could be
initialized. Reinstalling the application may fix this
problem.</em></span><br>
<br>
<span style="color:rgb(255,0,0)"><em>Available platform
plugins are: eglfs, linuxfb, minimal, minimalegl,
offscreen, vnc, wayland-egl, wayland,
wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.</em></span><br>
<br>
<span style="color:rgb(255,0,0)"><em>Fatal Python error:
Aborted</em></span><br>
<br>
</span><span style="color:rgb(255,0,0)"><em>Current thread
0x00007f020c8a9740 (most recent call first):</em></span><br>
<span style="color:rgb(255,0,0)"><em> File
"/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/chimerax/ui/gui.py",
line 157 in __init__</em></span><br>
<span style="color:rgb(255,0,0)"><em> File
"/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py",
line 577 in init</em></span><br>
<span style="color:rgb(255,0,0)"><em> File
"/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/site-packages/ChimeraX_main.py",
line 1015 in <module></em></span><br>
<span style="color:rgb(255,0,0)"><em> File
"/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py",
line 87 in _run_code</em></span><br>
<span style="color:rgb(255,0,0)"><em> File
"/home/apps/chimerax-1.2.5-rc-2021.05.24/lib/python3.8/runpy.py",
line 194 in _run_module_as_main</em></span><br>
<span style="color:rgb(255,0,0)"><em>Aborted (core dumped)</em></span><br>
<br>
</div>
<div><br>
</div>
<div>Could you help us resolve this issue?</div>
<div><br>
</div>
<div>Many thanks!</div>
<div><br>
</div>
<div>Best,<br>
</div>
<div>Vanessa</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Aug 3, 2021 at 8:11 PM
Tom Goddard <<a href="mailto:goddard@sonic.net"
moz-do-not-send="true">goddard@sonic.net</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="overflow-wrap: break-word;">This problem where
ChimeraX won't start on Linux and complains about Qt plugin
xcb was discussed a few months ago
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span><a
href="https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html"
target="_blank" moz-do-not-send="true">https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html</a></div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>Tom<br>
<div><br>
<div><br>
<blockquote type="cite">
<div>On Aug 2, 2021, at 12:11 PM, Elaine Meng via
ChimeraX-users <<a
href="mailto:chimerax-users@cgl.ucsf.edu"
target="_blank" moz-do-not-send="true">chimerax-users@cgl.ucsf.edu</a>>
wrote:</div>
<br>
<div>
<div>Hi Vanessa,<br>
Please send ChimeraX questions to <a
href="mailto:chimerax-users@cgl.ucsf.edu"
target="_blank" moz-do-not-send="true">chimerax-users@cgl.ucsf.edu</a>
(CC'd here, so no need to do anything this
time).<br>
<br>
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.<br>
<br>
Thanks,<br>
Elaine<br>
-----<br>
Elaine C. Meng, Ph.D. <br>
UCSF Chimera(X) team<br>
Department of Pharmaceutical Chemistry<br>
University of California, San Francisco<br>
<br>
<blockquote type="cite">On Aug 1, 2021, at 1:51
AM, Vanessa Roy <<a
href="mailto:vanessaroy@mail.tau.ac.il"
target="_blank" moz-do-not-send="true">vanessaroy@mail.tau.ac.il</a>>
wrote:<br>
<br>
Dear ChimeraX development team,<br>
<br>
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. <br>
Here is the output after installation:<br>
<br>
#
/home/apps/chimerax-1.2.5-rc-2021.05.24/bin/ChimeraX<br>
X11 connection rejected because of wrong
authentication.<br>
qt.qpa.xcb: could not connect to display
localhost:10.0<br>
qt.qpa.plugin: Could not load the Qt platform
plugin "xcb" in "" even though it was found.<br>
This application failed to start because no Qt
platform plugin could be initialized.
Reinstalling the application may fix this
problem.<br>
<br>
Available platform plugins are: eglfs,
linuxfb, minimal, minimalegl, offscreen, vnc,
wayland-egl, wayland, wayland-xcomposite-egl,
wayland-xcomposite-glx, xcb.<br>
<br>
Fatal Python error: Aborted<br>
<br>
Current thread 0x00007f479c05d740 (most recent
call first):<br>
File
"/home/apps/chimerax-1.1/lib/python3.7/site-packages/chimerax/ui/gui.py",
line 119 in __init__<br>
File
"/home/apps/chimerax-1.1/lib/python3.7/site-packages/ChimeraX_main.py",
line 500 in init<br>
File
"/home/apps/chimerax-1.1/lib/python3.7/site-packages/ChimeraX_main.py",
line 919 in <module><br>
File
"/home/apps/chimerax-1.1/lib/python3.7/runpy.py",
line 85 in _run_code<br>
File
"/home/apps/chimerax-1.1/lib/python3.7/runpy.py",
line 193 in _run_module_as_main<br>
Aborted (core dumped)<br>
<br>
We would greatly appreciate your advice on how
to solve this issue.<br>
<br>
Many thanks for your help!<br>
<br>
Best,<br>
Vanessa<br>
-- <br>
Vanessa Roy<br>
Gil Ast Lab<br>
Department of Human Molecular Genetics and
Biochemistry<br>
Sackler Faculty of Medicine | Tel Aviv
University<br>
</blockquote>
<br>
<br>
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</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</blockquote>
</div>
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