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    <p>The problem isn't a missing shared library.  Using ldd on the
      shared libraries doesn't find anything missing.  And if you don't
      blink on a slow computer, you can see the contents being drawn and
      then written over so it's blank.  And if you install PyQt6 and
      PyQt6-WebEngine into a current daily build, then it works.</p>
    <p>    sudo /usr/libexec/UCSF-ChimeraX-daily/bin/python3.9 -m pip
      install PyQt6 PyQt6-WebEngine</p>
    <p>Well, the file history and log widgets are correctly drawn.  I
      still have an OpenGL issue running Fedora 35 in a VM:</p>
    <p>    QWaylandGLContext::makeCurrent: eglError: 3009, this:
      0x37918d0</p>
    <p>and that is fixed by turning off wayland in /etc/gdm/custom.conf
      and rebooting.<br>
    </p>
    <p>    -- Greg<br>
    </p>
    <div class="moz-cite-prefix">On 1/26/2022 4:22 PM, Tom Goddard
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:2EE6E5D8-ED8E-4123-84F3-0F8BD66F8141@sonic.net">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Hi Greg,
      <div class=""><br class="">
      </div>
      <div class="">  This is just the Qt window toolkit html panels
        such as the Log failing.  Qt renders each of those panels from a
        separate process and it seems likely that separate process
        simply fails because of a missing system shared library.  Have
        you looked to see which needed shared library is missing, since
        it could perhaps just be installed on the newer Fedora to make
        ChimeraX work?</div>
      <div class=""><br class="">
      </div>
      <div class=""><span class="Apple-tab-span" style="white-space:pre">     </span>Tom</div>
      <div class=""><br class="">
        <div><br class="">
          <blockquote type="cite" class="">
            <div class="">On Jan 26, 2022, at 1:16 PM, Greg Couch via
              ChimeraX-users <<a
                href="mailto:chimerax-users@cgl.ucsf.edu"
                class="moz-txt-link-freetext" moz-do-not-send="true">chimerax-users@cgl.ucsf.edu</a>>
              wrote:</div>
            <br class="Apple-interchange-newline">
            <div class="">
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class="">Yes, the problem is that your operating system
                is too new :-).  You will need to wait for a newer
                version of ChimeraX that uses Qt 6 instead of Qt 5. 
                Fortunately, we are working on that right now, and there
                should be a version available within a week.  It is a
                major change, so it will be in a "technology preview"
                build before it shows up in the daily builds. 
                Unfortunately, ISOLDE doesn't work with daily builds. 
                So you are effectively stuck until there is a ChimeraX
                1.4 release and ISOLDE is updated for 1.4.</div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class=""><br class="">
              </div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class="">In the interim, you might be able to run
                ChimeraX in a singularity or docker container that is
                based on Fedora 33.  Or it might work in a virtual
                machine.  I think a singular container version would be
                best (most efficient and performant), especially if the
                graphics driver is the same version as the one in the
                host OS.  But I've been pleasantly surprised with how
                well ChimeraX graphics works on a Linux VM running in
                VmWare Workstation on my Windows desktop.<br class="">
              </div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class=""><br class="">
              </div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class="">    Best,</div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class=""><br class="">
              </div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class="">    Greg<br class="">
              </div>
              <div style="margin-top: 0px; margin-bottom: 0px;
                caret-color: rgb(0, 0, 0); font-family: Helvetica;
                font-size: 18px; font-style: normal; font-variant-caps:
                normal; font-weight: normal; letter-spacing: normal;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; word-spacing: 0px;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class=""><br class="">
              </div>
              <div class="moz-cite-prefix" style="caret-color: rgb(0, 0,
                0); font-family: Helvetica; font-size: 18px; font-style:
                normal; font-variant-caps: normal; font-weight: normal;
                letter-spacing: normal; text-align: start; text-indent:
                0px; text-transform: none; white-space: normal;
                word-spacing: 0px; -webkit-text-stroke-width: 0px;
                text-decoration: none;">On 1/26/2022 12:17 PM, Nicholas
                R Silvaggi via ChimeraX-users wrote:<br class="">
              </div>
              <blockquote type="cite"
cite="mid:BLAPR16MB385960380407B1CE4E534BBEC7209@BLAPR16MB3859.namprd16.prod.outlook.com"
                style="font-family: Helvetica; font-size: 18px;
                font-style: normal; font-variant-caps: normal;
                font-weight: normal; letter-spacing: normal; orphans:
                auto; text-align: start; text-indent: 0px;
                text-transform: none; white-space: normal; widows: auto;
                word-spacing: 0px; -webkit-text-size-adjust: auto;
                -webkit-text-stroke-width: 0px; text-decoration: none;"
                class="">
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class="">Hello,</div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class=""><br class="">
                </div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class="">I am just
                  getting started with ChimeraX. I installed the latest
                  production release (Centos 8
                  version, ucsf-chimerax-1.3-1.el8.x86_64) on my Fedora
                  33 workstation. It worked great. I installed Isolde
                  and Clipper through the help viewer winder and
                  everything was great. Yesterday I upgraded the
                  operating system to Fedora 35, and now the help viewer
                  no longer works. It is just blank. I can't get it to
                  show other web sites, files from my hard drive -
                  nothing. I installed ChimeraX on 3 other workstations,
                  and all have the same problem. This is very curious
                  and there is no error output that I can find to help
                  point me to the problem. Has anyone else experienced
                  this?</div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class=""><br class="">
                </div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class="">Thanks for
                  your help,</div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class="">Nick Silvaggi</div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class=""><br class="">
                </div>
                <div style="font-family: Calibri, Arial, Helvetica,
                  sans-serif; font-size: 12pt;" class="">P.S. I also
                  tried uninstalling the production release and
                  installing the Centos 8 version of the latest nightly
                  build - same problem persists.</div>
                <div class="">
                  <div style="font-family: Calibri, Arial, Helvetica,
                    sans-serif; font-size: 12pt;" class=""><br class="">
                  </div>
                  <div id="Signature" class="">
                    <div class="">
                      <div id="divtagdefaultwrapper" style="font-size:
                        12pt; background-color: rgb(255, 255, 255);
                        font-family: Calibri, Arial, Helvetica,
                        sans-serif;" class="">
                        <div name="divtagdefaultwrapper"
                          style="font-family: Calibri, Arial, Helvetica,
                          sans-serif; margin: 0px;" class=""><font
                            class="" size="3"><span style="font-size:
                              10pt;" class="">Nicholas R Silvaggi, Ph.D.<br
                                class="">
                              University of Wisconsin, Milwaukee<br
                                class="">
                              Department of Chemistry and Biochemistry<br
                                class="">
                              3210 North Cramer St<br class="">
                              Milwaukee, WI 53211<br class="">
                              <br class="">
                              Office: Chemistry 372D<br class="">
                              Phone: 414-229-2647<br class="">
                              <a class="moz-txt-link-abbreviated
                                moz-txt-link-freetext"
                                href="mailto:silvaggi@uwm.edu"
                                moz-do-not-send="true">silvaggi@uwm.edu</a></span></font></div>
                      </div>
                    </div>
                  </div>
                </div>
                <br class="">
                <fieldset class="moz-mime-attachment-header"></fieldset>
                <pre class="moz-quote-pre" wrap="">_______________________________________________
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<a class="moz-txt-link-abbreviated moz-txt-link-freetext" href="mailto:ChimeraX-users@cgl.ucsf.edu" moz-do-not-send="true">ChimeraX-users@cgl.ucsf.edu</a>
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</pre>
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