Ubuntu 20.04 LTS graphics very slow after upgrading to 17.1

A

AlexanderZ11

Bit poster
I use Ubuntu every day, so I can notice the difference, never had this problem before. When I just type in RubyMine, I have to wait until the chars become visible, up to 1 second. When I collapse/expand folders, I have to wait. But when typing in terminal, in Chrome, LibreOffice no problem. You may say it is a RubyMine problem, but it worked fine on 17.0 and before, it works fine on macOS and Windows also.

I have an iMac 2017, 32 GB Ram, macOS 10.15.7, only one VM running. No hard background jobs, CPU load close to 3%. VM has 2 CPUs, 8 Gb RAM, 64 Mb graphics, 3d acceleration, more space. The Ubuntu installation is fresh, because previous Ubuntu VM did not load after upgrade, it boots and hangs forever on black screen. I had to create a new VM and migrate data from old HD.

Congratulations on improving the login screen, I was waiting for that so long, but you introduced another problem.
 
Also when I switch desktops with Ctrl+left/right from Mac to VM, it may freeze for a second. Never seen this before in last 10 years or so.
 
Thanks for the reply. As I said, my VM crashed and I already created a new one AFTER upgrading to 17.1 and migrated the data. So should I do all that manual steps? A took a quick look, virtio_gpu is blacklisted.
 
I did more tests, and the problem is different. I have virtio_gpu correctly installed. If I create a new project in RubyMine or PyCharm, typing is fast and responsive. But if I open a large project with many files and folders, everything is slow. Even if it detects I have a duplicate code, I change it and the inspection should update after few seconds, but now even after few minutes it does not update! If I scroll files list, expand/collapse folders, it's so slow that makes me crazy. All this never happened before 17.1. BTW I created another new VM to verify, the same. I use JetBrains products every day inside Parallels for 3-4 last years or so. Please fix or suggest something.
 
Hello again. This is getting very annoying. I cannot get used to this UI being so slow. I notice 60-80% CPU load when doing anything: opening a file, scrolling, typing. But almost 0, when doing nothing. Do you accept this as a bug? Do you have plans to investigate and fix? I am about to cancel my subscription and switch to VMWare or even Windows + WSL. Again, this was introduced in version 17.1.
 
With Parallels Desktop 17.1.1 it is possible to enable OpenGL for java2d. Either add the following line to $IDEA_HOME/bin/idea.properties
Code: 
sun.java2d.opengl=true
Or set global java options in your ~/.profile
Code: 
export _JAVA_OPTIONS='-Dsun.java2d.opengl=true'
This should significantly improve IntelliJ/RubyMine performance.
 
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