Christoph, consider using Apple Terminal (in Utilities), rather than Xterm. This does not directly answer your question, but it was definitely an improvement for me. After I started using Mac OS a long time ago, I discovered Apple Terminal as an alternative to Xterm. As a native Apple application, this freed me from a variety of idiosyncrasies with Xterm's dependence on X11. I never looked back. The only drawback was awkwardness with cut and paste between this and my X11-based text editor. I got used to it.
I do not have Catalina yet, so I can not test your reported problem. Perhaps someone else can say more about this Xterm problem in Catalina. I would also suggest bringing your question to an XQuartz or X11 support forum. On Thu, Apr 30, 2020 at 12:49 PM Christoph Kukulies <[email protected]> wrote: > I fired up X11 on my MacbookPro Catalina 10.15.4 and ran a Terminal > (xterm). > > Scrolling looks funny and very slow. Is this a graphic card thing (BLT > accelerator ?) > > — > Christoph >
