I recently upgraded Ubuntu to 18.04 and the Krita 3.3.3 appimage is not launching. Instead it lists in the taskmanager while using heavy CPU resources. I have tried Krita 4.x. It works, but I'm seeing noticeable millisecond lagging that I have not seen with version 3.3.3. Also I am not as pleased with the changes to the interface and bundled brushes.

If I can, I really wish to continue using Krita 3.3.3 for now. Are there any dependencies or libraries I should be looking in to?

Lord Jerick wrote:I recently upgraded Ubuntu to 18.04 and the Krita 3.3.3 appimage is not launching. Instead it lists in the taskmanager while using heavy CPU resources.

That works fine here, so it's probably not a problem with the appimage, but with your system.

Lord Jerick wrote:I have tried Krita 4.x. It works, but I'm seeing noticeable millisecond lagging that I have not seen with version 3.3.3. Also I am not as pleased with the changes to the interface and bundled brushes.

* Krita 4.1.5 performs much better than 3.3.3; if you feel there's more latency than with 3.3.3 but are testing after you updated to a version of Ubuntu that for you no longer runs the 3.x appimage, then you are probably seeing Ubuntu problems.

* I don't know which changes to the interface you mean, but it's probably not something we would want to change or change back.

* As for bundled brushes, you can always enable the Krita 3 preset bundle and disable the Kritga 4 preset bundle, so that's a total non-issue.

Lord Jerick wrote:If I can, I really wish to continue using Krita 3.3.3 for now. Are there any dependencies or libraries I should be looking in to?

No, appimages don't need any dependencies or libraries.

Tested. Kubuntu 18.04.01; krita-3.3.3-x86_64.appimage launches fine here.

Picture; 3.3.3 and dev 4.2pre-alpha version side by side.

Thanks for the pointers. I figured the issue would be with the system more than with Krita itself.

I started at the top. Turns out the upgrade muddied up the video drivers. A reinstall fixed that right up!

Ah!