[chimerax-users] Help viewer is blank after upgrading to Fedora 35

[Greg Couch]

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.

     sudo /usr/libexec/UCSF-ChimeraX-daily/bin/python3.9 -m pip install 
PyQt6 PyQt6-WebEngine

Well, the file history and log widgets are correctly drawn.  I still 
have an OpenGL issue running Fedora 35 in a VM:

     QWaylandGLContext::makeCurrent: eglError: 3009, this: 0x37918d0

and that is fixed by turning off wayland in /etc/gdm/custom.conf and 
rebooting.

     -- Greg

On 1/26/2022 4:22 PM, Tom Goddard wrote:
> Hi Greg,
>
>   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?
>
> Tom
>
>
>> On Jan 26, 2022, at 1:16 PM, Greg Couch via ChimeraX-users 
>> <chimerax-users at cgl.ucsf.edu> wrote:
>>
>> 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.
>>
>> 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.
>>
>>     Best,
>>
>>     Greg
>>
>> On 1/26/2022 12:17 PM, Nicholas R Silvaggi via ChimeraX-users wrote:
>>> Hello,
>>>
>>> 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?
>>>
>>> Thanks for your help,
>>> Nick Silvaggi
>>>
>>> P.S. I also tried uninstalling the production release and installing 
>>> the Centos 8 version of the latest nightly build - same problem 
>>> persists.
>>>
>>> Nicholas R Silvaggi, Ph.D.
>>> University of Wisconsin, Milwaukee
>>> Department of Chemistry and Biochemistry
>>> 3210 North Cramer St
>>> Milwaukee, WI 53211
>>>
>>> Office: Chemistry 372D
>>> Phone: 414-229-2647
>>> silvaggi at uwm.edu
>>>
>>> _______________________________________________
>>> ChimeraX-users mailing list
>>> ChimeraX-users at cgl.ucsf.edu
>>> Manage subscription:
>>> https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users
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