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<p>So I was able to reproduce this problem with a fresh install of
Debian 10. The ldd found the bug, libxcb-util.so.1 is missing.
And Debian 10 does not have the libxcb-util1 package, only
libxcb-util0. So I downloaded libxcb-utils1_0.4.0-1+b1_amd64.deb
from
<a class="moz-txt-link-freetext" href="https://packages.debian.org/bullseye/amd64/libxcb-util1/download">https://packages.debian.org/bullseye/amd64/libxcb-util1/download</a>,
installed it, and then chimerax works.</p>
<p>As an aside, you really should be using Ubuntu instead of Debian
for a desktop graphics system. Debian stable is a good reliable
Linux distribution for a server, but is way behind the times for
desktop graphics. In particular, the AMD and Intel open-source
drivers are much better in Ubuntu and get bug fixes more often.<br>
</p>
<p> -- Greg<br>
</p>
<div class="moz-cite-prefix">On 1/25/2022 6:38 PM, Greg Couch via
ChimeraX-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9136069e-db0c-2502-a26d-32c5d4fae949@cgl.ucsf.edu">
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<p>The nugget of good news was that you were able to install
ChimeraX using apt-get. That means all of the dependencies we
currently know about were installed. So the problem is probably
that either (A) you need to update your graphics driver or (B)
that we missed a dependency.</p>
<p>For (A) we recommend the proprietary Nvidia driver if you have
Nvidia graphics, or the open-source drivers if you have AMD or
Intel graphics. Please send me the output from "lspci | grep
VGA" so I can see what graphics device(s) you have.<br>
</p>
<p>For (B), please send me the output from running:</p>
<p> ldd
/usr/lib/ucsf-chimerax/lib/python3.9/site-packages/PyQt5/Qt/plugins/platforms/libqxcb.so</p>
<p>If there is a line that says "not found", then we have found
the missing dependency, and I can add it to future deb packages
so other people don't have this problem. But there could be
other errors that show up.</p>
<p> -- Greg<br>
</p>
<div class="moz-cite-prefix">On 1/22/2022 12:30 PM, Martin Urban
via ChimeraX-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:4d0be4ee-26f1-ab88-e061-7f0f6d497870@studmail.w-hs.de">
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charset=UTF-8">
<p>Dear ChimeraX users,</p>
<p>I have a problem with the installation of ChimeraX under
Debian 10 buster. <br>
</p>
<p>I downloaded the ucsf-chimerax_1.3ubuntu18.04_amd64.deb from
the official website. I installed it one time with: <i>sudo
dpkg -i </i><i>ucsf-chimerax_1.3ubuntu18.04_amd64.deb </i>and
also with <i>sudo apt-get install ./</i><i>ucsf-chimerax_1.3ubuntu18.04_amd64.deb.</i>
Both times I get the same error message:</p>
<p>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.</p>
<p>The full error message is as attachment in this mail.</p>
<p>I searched the web for an answer and came up with three
entries of this mailing list. I followed the described way in
these mails, but nothing worked for me (1st mail: <a
class="moz-txt-link-freetext"
href="https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002797.html"
moz-do-not-send="true">https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002797.html</a>;
2nd mail: <a class="moz-txt-link-freetext"
href="https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002770.html"
moz-do-not-send="true">https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-October/002770.html</a>;
3rd mail: <a class="moz-txt-link-freetext"
href="https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html"
moz-do-not-send="true">https://www.rbvi.ucsf.edu/pipermail/chimerax-users/2021-June/002339.html</a>)</p>
<p>Do you have an answer or a solution to my problem?</p>
<p>Greetings from Germany</p>
<p>-- Martin<br>
</p>
<br>
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