Warning: Initializing MATLAB Graphics failed.

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Steradiant
Steradiant il 12 Ott 2020
Risposto: Jim Svensson il 25 Feb 2021
Hello,
I installed MATLAB 2020b on Ubuntu 20.04 LTS. Everytime when I start matlab I get the following warning:
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:badsubscript
Index exceeds the number of array elements (0).
> In hgrc (line 165)
In matlab.graphics.internal.initialize (line 15)
Does anyone have an idea how to fix that?
  10 Commenti
Martin Laurenzis
Martin Laurenzis il 23 Nov 2020
Hi,
I solved my problem by editing hgrc.m lines:
screenPos = get(groot, 'MonitorPositions');
% Get the screen positioned at [1 1]
screenPos(:,1)=1;
screenPos(:,2)=1;
screen = screenPos(and(screenPos(:,1)==1,screenPos(:,2)==1),:);
width = screen(3);
height = screen(4);
The sceenPos line returns:
>> screenPos = get(groot, 'MonitorPositions')
screenPos =
2561 1 2560 1440
1 -31 2560 1440
Then:
screen = screenPos(and(screenPos(:,1)==1,screenPos(:,2)==1),:)
screen =
0×4 empty double matrix
By setting
screenPos(:,1)=1;
screenPos(:,2)=1;
"screen" turns to:
screen = screenPos(and(screenPos(:,1)==1,screenPos(:,2)==1),:)
screen =
1 1 2560 1440
1 1 2560 1440
I also fixed my OpenGL problems by updating driver for NVIDIA GTX1080TI.
Thanks, Martin
tkazik
tkazik il 19 Gen 2021
Unfortunately, this is still not solved with the third update of 2020b. The suggestions by @Hannes Gorges with the corrections by @Bruno Luong seem to work and this issue seems to be related to a setup with multiple monitors (apparently some negative indices by the display layout are creating trouble). So I guess the current suggestion does the job, but is still not 100% correct, given that:
% this returns only the 'layout' of the first monitor (size: 1x4)
screen = get(groot, 'ScreenSize');
% returns the full 'layout' of dual monitor (size: 2x4)
screenPos = get(groot, 'MonitorPositions');
So the proper fix will likely have to use the second cmd.

Accedi per commentare.

Risposte (1)

Jim Svensson
Jim Svensson il 25 Feb 2021
I have this problem. When can we expect an official fix?

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