I copied the relevant files from Windows and pasted them into Blender on Linux, but there was no change…I followed the instructions below. Any clues? Thanks
What you will need to do, I am not sure if you did this so please correct me if you did, is copy the startup.blend and userprefs.blend from Windows to Linux.
On Windows, you should find both of these files in C:\Users\<UserName>\AppData\Roaming\Blender Foundation\Blender\<VersionNumber>\config, copy the startup.blend and userpref.blend files to a USB drive.
On Linux, once you have installed Blender, navigate to /home/<UserName>/.config/blender/<VersionNumber>/config. Then you should be able to paste the startup.blend* and userpref.blend files from the USB drive.
I did exactly that, but when I launched Linux Blender, it didn’t read my old settings. Not sure why. I didn’t copy to USB because the Windows drive is accessible from Linux…not sure if that matters. I don’t see why it would matter.
That shouldn’t matter, I just said to use a USB since I wasn’t sure if it was the same computer.
Is it the same version of Blender on Windows and Linux?
Check the location where the startup settings file is saved, using the same method as in the image.
This method can help you identify path issues.
However, I don’t know if files created on Windows can be problematic on Linux. (I don’t use Linux, so I can’t confirm this.)
Also, some addons require the use of versions specific to each OS.
According to Blender Stack Exchange, you should just be able to copy the files, so I don’t know why it isn’t working.
I’m not a Linux user either, so I don’t know. 
That’s why I suggested that method.
Sometimes the route may not be accurate. 
The Linux Blender version doesn’t have “Toggle System Console,” I don’t think. However, the Linux version is 5.0.1, and I think the Windows version is 5.0. Could that be the problem? I think I’ll just re-enter all my customization again…
If you don’t have the toggle system console, you can run the blender on the terminal.
Thank you, will try…
Hello, I’m facing same problem and I copy pasted both files from and into correct location but my blender won’t open in linux
Please refer to the video attached above to run the blender as a terminal command and save the startup file settings.
You will then see the path to the start file in the terminal command window.
Make sure that the path is the same as the path where you installed the copy file 
I’m not using Linux, so it’s hard to check for other problems.
The funny thing is that if you double-click on the startup.blend Blender will launch with some of your older presets…
@oo_1942 I did open blender log in console as shown in tutorial and copy pasted both files in accurate folder, the main thing was all the addons were shown missing and multiple problems were there in logs I guess I’ll manually add all the addons and settings again bit tedious but no problem.
Yes. I’m heading to that conclusion. I’ll just start over again. And the addons would have to be reinstalled one by one anyway. But it will pay off, as I see Blender runs much smoother on Linux. Starting with the launch, which takes a fraction of a second, but in Windows you stare at the screen for a while, wondering if it will ever come up…Thanks to everyone who responded to this thread.
@NineAmulets After installing one Addon, try installing the copied Addon.
Alternatively, try the feature after installing the copied Addon.