Error loading matlabprefs.mat
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Andreas Schwager
am 18 Jun. 2021
Kommentiert: Andreas Schwager
am 25 Jun. 2021
Hallo,
there is an error:
MATLAB:load:notBinaryFile
Unable to read MAT-file /home/myUser/.matlab/R2021a/matlabprefs.mat. Not a binary MAT-file. Try load -ASCII to read as text.
sometimes (this is not reproducible) it pops up after rebooting Matlab:
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:load:unableToReadMatFile
Unable to read MAT-file /home/myUser/.matlab/R2021a/matlabprefs.mat. File might be corrupt.
> In hgrc (line 163)
In matlab.graphics.internal.initialize (line 15)
Some pages (e.g. https://www.mathworks.com/matlabcentral/answers/364986-matlab-error-graphic) recommend deleting matlabprefs.mat. However, if I do, the error pops up again.
I also deleted full ~/.matlab folder. The error was gone for a couple of hours. Now, it reappears.
Does anybody know a persistent solution?
Thanks
6 Kommentare
Walter Roberson
am 18 Jun. 2021
That looks okay at the moment. At a time that MATLAB is telling you the file is corrupt, could you attach the file here for us to look at?
(Note: I am not completely sure where MATLAB stores github keys, or login credentials to reach your Mathworks account, and it is plausible they might be stored in that file, so there is some degree of security risk; I do not know if they are stored in that file or not, or how they might be encoded.)
Akzeptierte Antwort
Jan
am 19 Jun. 2021
Bearbeitet: Jan
am 25 Jun. 2021
If removing the file helps for some time, a function is destroying the file. Then an approach is to scan, who is accessi ng the file. Shadow the builtin save() function by adding this in a folder ontop of the path:
function save(varargin)
file = varargin{1};
if contains(file, 'matlabprefs', 'IgnoreCase', true) % [EDITED, Typo fixed]
disp(dbstack)
end
str =
evalin('caller', ['builtin(''save''', strjoin(varargin{:}, ',')]);
end
Does this work?! The strange calling syntax of the save() command, which takes char vectors as input to access the contents of the corresponding variables, is hard.
8 Kommentare
Jan
am 25 Jun. 2021
@Andreas Schwager: This is the purpose of the code I've posted: Preventing SAVE to access the preferences file or to track, who is corrupting it.
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