Typing in the live editor is slow on Linux

16 次查看（过去 30 天）
Craig Watson
Craig Watson 2018-11-15
移动：Walter Roberson 2025-3-17
I just installed MATLAB R2018b on Linux Mint 19. I am used to using it on Windows, where the Live Editor works great.
On Linux however, there is a very annoying latency when typing. Whether it's in a text area or code block, there is maybe ~0.25s between the time I type and when something happens on screen. I tried disabling the Datatips, which didn't help.
What's going on, and is there any way to fix this? I am running on a fast computer, so performance should not be an issue.
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Panya Sukphranee
Panya Sukphranee 2020-7-15
移动：Walter Roberson 2025-3-17
The issue seems to be with some package conflicts in Linux. My Liveeditor was running smoothly until I installed some MP4 codecs for screen recording. The entire Liveeditor is extremely slow to render.
Oliver
Oliver 2025-3-17
I have the exat same issue as you Mikhail, and I am running R2024b on opensuse in 2025, have you found a potential fix? (I know this post is old, but I have been searching for a solution for months)

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回答（5 个）

Mikhail
Mikhail 2021-10-21
MATLAB R2021b now uses the same technology for regular scripts and files, not just Live Scripts. Now all editing/scrolling is painfully slow, not just in Live Editor.
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Mikhail
Mikhail 2021-12-27
I've noticed that the situation becomes much better when i change screen resolution from HiDPI (which is native for my display) to e.g. 1920x1080.
Can somebody who still experience with problem confirm they are using HiDPI display?
Mikhail
Mikhail 2021-12-27
In fact, simply resizing the documentation browser window four times makes it work much smoother.

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Mikhail
Mikhail 2019-5-20
No way!
MathWorks have fixed this in R2019a Update 2.
Not only Live Editor now works fine, but also Help Browser runs very smooth.
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Mikhail
Mikhail 2021-10-21
编辑：Mikhail 2021-10-21
I can tell that I've tried both linux-5.14 and linux-5.10. MATLAB R2021a works fine, R2021b works horribly in both cases.
I could try to fire up Debian's kernel here, but ffs, there is no guarantee it will work and that it is kernel that is a problem. It's easier to run MATLAB in a Windows VM - where it probably belongs anyway (and works way faster than in host Linux).
Felix
Felix 2021-11-1
I can confirm the same experience: The Matlab R2021a editor works just fine, while with R2021b it became very slow.
In R2021b, for any action in the editor (press page down, or move cursor, or scroll with mouse wheel, etc), I get a lag of about 300 ms if the system is idle, and a good 2 seconds if I use a few cores in other processes (say 3 out of 16, so still plenty of free resources, and all other programs work fine). It's impossible to use the editor this way.
System runs Ubuntu 20.04, Linux kernel version is 5.11.

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Hiroyuki Oya
Hiroyuki Oya 2022-5-20
Slow matlab edior problm is confirmed on my Ubuntu 22 machine.
R2021a does not have such lagging editor issue.
R2021b and R2022a has slow editor problem. I am going back to R2021a.
LeChat
LeChat 2019-8-13
I found a work around for Mac a couple years ago (here), by installing Matlab kernel into Jupyther. Check references therein for Linux and Windows.
Antonio Sala
Antonio Sala 2019-10-12
The problem seems to be solved in R2019b... at least it does work for me on Ubuntu 19.04 and 10.10 with that release. They didn't seem to announce it (or I am not aware of it) but the issue seems no longer present in my case.
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Johan Thor
Johan Thor 2019-10-13
I have now rebooted into a series 4-kernel (4.15.0-65 on Ubuntu to be specific) and on this configuration, Matlab 2019b seems to solve this issue, Antonio said above. Live editor works just as on kernel version 5.
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sdkfjqsdkmfj mmkjmkjml 2019-10-13
编辑：sdkfjqsdkmfj mmkjmkjml 2019-10-13
Well, so Mathworks will alllow me to move to Matlab R2019b for FREE, right, as I can no longuer use the release I b-o-u-g-h-t ?
If not, I would like a FIX for this issue, that's a f*** shame.

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