Hi again, Jaroslaw and everyone concerned. I have investigated a bit further on this issue. This is a quick report of my findings thus far. If I can provide more useful information, I'll do it in a new post.
To summarize what I have found. 1. Artifacts are still there, though mitigated, even after applying the last proposed workarounds. 2. At least on Unix systems, the issue seems to be completely fixed by falling back to GTK2. More details. * Basic Machine description Platform: Dell XPS 13 9360. Graphics: Iris Plus Graphics 640 driven by the i915 module (default chipset settings) OS: Ubuntu 16.04.3 (Linux kernel: 4.10.0-33-generic) * Description of the issue Ghosting lines and/or little squares screen artifacts appears on the drracket canvas while scrolling. Much more prominent when text is scaled and/or when graphical objects like comment boxes are included in the code. * Fix On Unix systems, falling back to GTK2 when running drracket seems to completely fix the issue: PLT_GTK2=1 drracket Jaroslaw, I don't know about Windows but if you can do something like this when running drracket, you may fix the problem by now. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
