Matab Help Window is just a black screen.

Hi,

I recently installed Matlab R2019b and my Matlab help documentation just appears as a black screen.

I had no such issues in the previous version I had installed (R2019a)

Any suggestions how to get my help documentation window ??

Attaching a screenshot of the issue.

I also get the following error message in my command terminal, does this have anything to do with my issue??

[Hari Krishna Ravuri]

What Operating system are you using?

[Joshitha R]

I'm using Manjaro Linux @Hari Krishna Ravuri

[Hari Krishna Ravuri]

Try to reproduce after executing

sudo apt-get install libcanberra-gtk-module

[Joshitha R]

Since Manjaro is Arch linux based system, I used this:

sudo pacman -S libcanberra

opening Matlab again, I run into this at the terminal:

My Matlab Help and documentation window is still a blank screen.

[George Watkins]

I also have the same probelm on latest arch

[Andreas Laible]

Same problem, also using arch. Support, please!

[Joshitha R]

I still haven't found a solution for this unfortunately

[Chaitanya Meduri]

Have you tried installing libselinux and restarting matlab?

[Joshitha R]

yeah, that did not help. I just learnt to live with it and use the online matlab documentation for functions

Answer 1

[Andreas Laible]

Install libsepol and libselinux from aur to solve the problem.

[Joshitha R]

Have you done this and found it to be an effective solution?

[Andreas Laible]

Yes, it makes help browser and livescripts work.

[Joshitha R]

Yes finally!! I can see my Matlab Help window's contents now.

I ran:

pamac build libsepol

and

pamac build libselinux 

on my terminal and this has now fixed my issue. Thank you @Andreas Laible

[Mark Smith]

Where can I find these files: libsepol, libselinux

[Joshitha R]

just run the two commands I have mentioned in your terminal/command prompt

[LOKENDRA SINGH]

'pamac' is not recognized as an internal or external command,

operable program or batch file. not working in windows

>

[Joshitha R]

@LOKENDRA

This was a fix for the arch linux OS, not Windows

[Joshitha R]

Unfortunately, after my latest Manjaro system update, the problem has resurfaced.

The previous fix of usinh libselinux and libsepol does not help anymore.

I guess I am missing a few more packages

[Andreas Götz]

Has someone got a solution for windows? My Matlab is super slow, while the rest of the system works without issues. When I tried to shut the black matlab window down, first nothing happend, and then after 2 minutes the programm closed finally.

Has anyone had that problem too?

Answer 2

[Joshitha R]

After my most recent Majaro system update on 29th Aug 2020, I faced the same issue again.

This time , just installing the libsepol and libselinux packages did not help

The error that was now 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

I followed this reddit thread

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

[Mian Li]

Great! This solved all my window-related problems.

[Francesco Alemanno]

this works!