Matlab Editor does not respond to keyboard inputs

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Hi Everyone,
My Matlab editor stopped responding to most (but not all!) keyboard inputs. All letters+numbers stopped working, and SPACE as well, but BACKSPACE still works. And Ctrl+C/V also works, but not C or V??? Matlab editor is the only one with this problem, my command window does not have any problems. I'm flabbergasted!
Laurens
ps. Version is R2013a, running on Windows 7 Professional, 64-bit.
ps #2. The problem disappears on restarting Matlab. I'm still very curious though, so if anyone has any ideas...
  4 Comments
Jan
Jan on 21 Jun 2019
Nobody has posted the currently edited M-file here. The user d p posted at least a screenshot: A script starting with clear all and the editor is in the state "continue enter a statement".
I still think, that there is a common pattern behind the different observations. Therefore I encourage all users to add the corresponding code in this thread.
Please give us a chance to idnetify the problem.
Alf Magne Meling
Alf Magne Meling on 28 Aug 2024
Same problem with keyboard input stop working in edit window.
The edit window was dragged out of the main Matlab window onto a separete display when this happened.
Close the window and open and move again, and everything work ok.
Version
R2019a (9.6.0.1072779)
64-bit (win64)
March 8, 2019

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Answers (15)

Zzz
Zzz on 24 May 2021
A solution that worked for me:
Right click the live editor path -> click Restore
  4 Comments
kh
kh on 24 Dec 2023
but where is the live editor path, plzz?

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OIS
OIS on 21 Apr 2017
I have the same issue with R2016a on win7 64-bit machine (only non-escaped keyboard strokes are not accepted). However, I noticed that it only is a problem to the one file I am working with and all other files open in the editor don't have this issue. I used to close Matlab and reopen it and it would solve the problem. Now, I closed the one file with the problem and reopen it and it was fine. A work around but not a solution. Help is definitely still needed!

Eviatar Yemini
Eviatar Yemini on 10 Oct 2021
I think I solved it. Noticed a suspiciously timed Java update that coincided with the issue.
The problem was slowing both my Matlab editor & compiled standalones, so that added to the suspicion that it's a Java issue.
Downloaded the latest Java SE & SDK, then installed them. Problem dissapeared.

Matthew
Matthew on 3 Jul 2014
No idea how to fix it, but I have this problem too. Also 2013a, also Windows7 Pro 64 bit.
My problem corrects when restarting matlab, but my scripts take several minutes to load + process, so it's a bit annoying.

d p
d p on 15 Jul 2016
Edited: d p on 15 Jul 2016
Same here, with an attached pic. r2016, restarting solved my problem.

Jenny
Jenny on 1 Feb 2018
Same problem on 2012b. Very annoying.

iisakson
iisakson on 5 May 2018
I have the very same problem on 2015b for a function file.

Johannes
Johannes on 30 Oct 2018
Same Problem for me, running 2017a. Had it happen twice on different files already.

Beatrice Lena
Beatrice Lena on 21 Jun 2019
Problem still there with 2018a...
  1 Comment
Jan
Jan on 21 Jun 2019
Nobody has posted the currently edited M-file here. The user d p posted at least a screenshot: A script starting with clear all and the editor is in the state "continue enter a statement".
I still think, that there is a common pattern behind the different observations. Therefore I encourage all users to add the corresponding code in this thread.
Please give us a chance to idnetify the problem.

Sign in to comment.


Mina Gheiratmand
Mina Gheiratmand on 30 Oct 2019
Same issue here. Using Matlab 2018b on Mac. It has happened multiple times working on different codes. Code is not too long. (I feel this time, it might have started when I pressed multiple keyboard buttons at the same time while typing. I checked the keyboard shortcut list in Preferences but no keyword search led to a useful hint there.)
A maybe useful observation is that when I undock the editor or the command window, the keyboard strokes are recognized again and I can type. But when I dock them back into the main Matlab window, the typing is not recognized again.
p.s. I do not see a "continue entering statement" comment.

yapeng shi
yapeng shi on 28 Nov 2019
Please check Matlab keybord shortcuts perferences. Maybe it's because you use 'C', 'V' or other characters as the shortcuts to response the action rather than typing.

Johann Martinez
Johann Martinez on 8 Mar 2021
Matlab R 2020b also freezes on keyboard after some runs!!!
Are here some workaround about this issue?
Thanks in advance.
  1 Comment
Joshua Diamond
Joshua Diamond on 23 Apr 2021
I found a strange workaround. This is creating any error (like try typing saveas with no arguments). Of course this would have to be done before the error occurs. Then once you have the inability to type, you can click the red error text. This pops up a little information window. After this, you should be able to type.

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Joshua Diamond
Joshua Diamond on 23 Apr 2021
Edited: Joshua Diamond on 23 Apr 2021
I found a strange workaround. Some things have worked including right clicking the command window and clearing it; running a function (by clicking the name of the function in recent commands); opening a new editor window and closing it.
But one thing works most reliably. This is creating any error (like try typing saveas with no arguments). Of course this would have to be done before the error occurs. Then once you have the inability to type, you can click the red error text. This pops up a little information window. After this, you should be able to type.
I'm using 2020b, Mojave 10.14.6. I'm also screen sharing.

Haris K.
Haris K. on 3 Oct 2021
Same problem here. I am using MATLAB R 2020b.
Same issue like everybody else. Shortcuts like Ctrl+C and Ctrl+V work. Selecting part of code and hitting F5 works. Arrows (up,down,left,right) work. Backspace works. Anything else, does not work.
I have (and had prior to execution) other script files open, and everything works as expected (to those other scripts). Nothing really suspicious appears, neither any message in the status bar at the bottom (i.e. next to the parallel pool icon).
I had been running this code for a few days, I tried making some changes to the code while running. Usually this works, but it wouldn't allow me any changes (i.e. keystrokes stopped functioning) after some time. At first, because the script was still running, I thought that this is something MATLAB is doing to avert some issue due to the fact that the code was still running. Then the code stopped (-I forced it to stop because I needed the results to catch a deadline), but the issue continued and I sought a solution in the forums. Unfortunately, no solution yet.
  1 Comment
Haris K.
Haris K. on 3 Oct 2021
Let me add that colsing and re-opening that paritcular script (-just the script is enough; not the entire MATLAB session as someone else suggested), corrected my issue.

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hamed amini
hamed amini on 17 Aug 2022
the same problem with
MATLAB Version: 9.9.0.1467703 (R2020b)
Operating System: Microsoft Windows 10 Enterprise Version 10.0 (Build 19044)
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

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