Comment 13 for bug 657783

I can reproduce the bug with your files on my system. I don't see anything wrong with your files. Hence it's a real bug.

I believe this is caused by the "pressure sensitivity" option, which causes the rendering to become much more complicated, and by issues in the rendering libraries (libgnomecanvas and libart) used by xournal -- xournal is asking them to render several million antialiased polygonal curves, each with its own width parameter, and they seem to become completely overwhelmed and hog X resources in a way that's hard to believe.

I hope that, if you stop using the "pressure sensitivity" option, you'll be able to get much further (though things will eventually slow down again as the volume of notes gets large). Due to the inefficiency of the rendering libraries, until xournal gets completely rewritten for performance you should probably have no more than 20-ish pages of handwritten notes in your document, and even much less if using pressure sensitivity.

If you e-mail me so I know how to reach you, I can send you a version of Simmetrie.xoj with all the stroke width information removed, it loads successfully and reasonably fast (still a bit slow, but hey it's 50 pages).

QUESTION: is this indeed a new bug for you, i.e. were you previously able to work fine with this document and others of similar size with variable-width strokes? If so, I'm assuming it must be an issue in either the libraries or the X server, because absolutely nothing has changed in xournal's rendering code in the last year or so.

Denis