Initializing MATLAB Graphics failed in Linux.

Hi

I just installed R2020b on Linux and when I start Matlab I get this error;

Warning: Initializing MATLAB Graphics failed.
This indicates a potentially serious problem in your MATLAB setup, which should be resolved as soon as possible.  Error detected was:
MATLAB:hg:InvalidProperty
Unrecognized property screenpixelsperinch for class Root. 
> In hgrc (line 165)
In matlab.graphics.internal.initialize (line 15) 

I tried things like

matlab -softwareopengl 
export GTK_PATH=/usr/lib/x86_64-linux-gnu/gtk-2.0

but did not work for my problem and there is one more thing but I think it's not caused this graphic problem. When I start Matlab

Failed to load module "pk-gtk-module"

I get this error too in the terminal.

[Walter Roberson]

The failed to load itself is considered informative; https://www.mathworks.com/matlabcentral/answers/479778-gtk-message-16-17-51-771-failed-to-load-module-canberra-gtk-module#answer_396583 but you might want to install the libraries mentioned in the Answers there.

[Ismail Alperen Akar]

Already installed these but I still get the error

sudo apt-get install packagekit-gtk3-module
sudo apt-get install libcanberra-gtk-module

I installed R2020a too but I still get the error.

[Walter Roberson]

The only times I have seen screenpixelsperinch marked as unrecognized was a case where MATLAB could not find any graphics driver -- not vendor opengl, not the linux work-alike. If I recall correctly one of the times was driver install issues, and the other time was libc.so incompatibility.

[Ismail Alperen Akar]

I updated drivers and error still exist. I don't know how to figure it out. Thanks for your help.

[Walter Roberson]

I recommend contacting Mathwork Support for free installation assistance.

Answer 1

[Sai Veeramachaneni]

Hi,

Your issue might be related to this known bug. I suggest you to contact support for startup issues

Thanks