MATLAB Answers

Documentation and Live Editor shows black screen on Linux

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Guillaume Le Goc
Guillaume Le Goc 2019 年 8 月 6 日
コメント済み: Guillaume Le Goc 2020 年 9 月 3 日 15:10
Hello,
I'm struggling with the following problem : the documentation shows only a black screen, as you can see in the attached picture. I also noticed the same thing for the live editor, though I don't use it.
I've tried the following :
  • Changing the renderer (source) :
com.mathworks.mlwidgets.html.HtmlComponentFactory.setDefaultType('HTMLRENDERER');
The documentation now displays OK but unformatted which is not very eye-candy. The Live Editor is still black.
  • Installing missing library (source) :
Running,
ldd ~/.matlab/$MATLABVERSION/HtmlPanel/glnxa64/chromium/jxbrowser-chromium | grep -i found
I found that I was missing the deprecated libgconf library, that I installed. The return of the previous command is now empty but the problem is the same.
  • Reverting to the default renderer :
com.mathworks.mlwidgets.html.HtmlComponentFactory.setDefaultType(' ');
The problem persists.
My computer is running Manjaro Linux with KDE. Java is installed through jre-openjdk (up to date, version 12.0.2). MATLAB version is R2019a.
I'd like to try a few things before trying the full reinstallation of MATLAB, so I'm all ears.
Cheers,
Guillaume

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Joshitha R
Joshitha R 2020 年 9 月 3 日 14:22
Yep, my error is also related to pango:
/usr/local/MATLAB/R2019b/bin/glnxa64/jcef_helper: symbol lookup error: /usr/lib/libpango-1.0.so.0: undefined symbol: g_ptr_array_copy
The fix given in the first link doesn't help (I also don't know how to go about the 'relinking' mentioned in one of the 2 answers)
Have no idea on how to work out the solution given here as well:
Joshitha R
Joshitha R 2020 年 9 月 3 日 14:59
FOUND A FIX!!
the error that was actually thrown to me was:
/usr/local/MATLAB/R2019b/bin/glnxa64/jcef_helper: symbol lookup error: /usr/lib/libpango-1.0.so.0: undefined symbol: g_ptr_array_copy
these are the commands I used:
mkdir $Matlab_root/cefclient/sys/os/glnxa64/0_excluded
mv $Matlab_root/cefclient/sys/os/glnxa64/libg* $Matlab_root/cefclient/sys/os/glnxa64/0_excluded
I can now view my Documentation window and the Live scripts
Guillaume Le Goc
Guillaume Le Goc 2020 年 9 月 3 日 15:10
Yay that worked !
Basically it's the solution proposed in the Matlab Answers post we mentionned but moving all libg related libraries.
Cheers !

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採用された回答

Guillaume Le Goc
Guillaume Le Goc 2019 年 10 月 22 日
The problem appeared again on MATLAB R2019b. I also noticed that the "Log in" button didn't work, while outputing the libselinux library was missing . Installing SELinux library solved all the problems (black screen on doc & livescripts and the Log in button).

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Harisanker Pradeep
Harisanker Pradeep 2019 年 12 月 5 日
This worked for me. Here's the link to the libselinux aur repo -> https://aur.archlinux.org/packages/libselinux/

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その他の回答 (1 件)

Chidvi Modala
Chidvi Modala 2019 年 8 月 13 日

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Guillaume Le Goc
Guillaume Le Goc 2019 年 8 月 14 日
I didn't want to disable all desktop effects (there are many in KDE...). Oddly, reinstalling MATLAB fixed the problem. Not sure what happened there.

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