When using Krita lod-unstable build from Dmitry's PPA, I found that the current build does not update brush strokes as active as krita-testing build. Very oftenly after I applied multiple brush strokes and saw the cursor moved, nothing would appear on the canvas. Continue drawing sometimes could "push through" a few strokes, but the strokes before that were lost and the screen update was slow -- more than 500ms after the last stroke did I see things starting to come up. I tested this is on a RGB 8 bit, 12000x7000px 2 layers kra files. Ubuntu Gnome 15.04. krita-lod-unstableK2+git20151117+r12-61~ubuntu15.04.1. Very obvious when using Fill_circle brush preset, Krita simply became unusable after a few strokes like that. I tried turning off OpenGL and autosave. But they did not help at all. Now I'm using krita-testing 2+git20151117+r41-61~ubuntu15.04.1, the problem never happened. Reproducible: Always
Dmitry will take a look on Monday.
Hi, Tyson! I still have a trouble with reproducing your bug :( I've seen it a couple of times, but I cannot reproduce it in development environment. I will keep hunting the bug further :(
I suspect that this is related to https://bugs.kde.org/show_bug.cgi?id=361619, actually.
See https://phabricator.kde.org/T2077
Hi, Tyson! I didn't see this bug for ages... is this bug still actual? I have a feeling it has been fixed since then.
Hi Dmitry, I don't see this bug anymore for a very long time. 9 out of 10 it was a Ubuntu 15.04 specific bug -- it had very old Qt packages. I think you've fixed it in the recent builds. Thank you!