I am using the terminal program called screen, which can create several "virtual terminals" in a single "real" terminal (the words "virtual" and "real" here are quite relative, the "real" terminal can be a konsole tab as well, not necessarily tty1-tty6). The problem is that I cannot create more than 40 windows inside a single screen. When I try to create more, screen says "No more windows." After some googling I found that that this is controlled by something called MAXWIN, but I didn't find any information how to modify this MAXWIN. How can I increase the maximal number of windows inside a single screen?
I use Debian 6 "squeeze".
PS I understand that I can run several screen's in several "real" (in the above sense) terminals, but this makes it harder to use multiple display mode (screen -x).
That's a compile time option. Using strictly packages from upstream, it can't be done. If you wanted to compile screen yourself, you could accomplish this. Look in the config.h.in file. Near the top will be # define MAXWIN 40. Change that to your new limit.
来源：https://stackoverflow.com/questions/14927865/how-to-get-more-than-40-windows-in-gnu-screen-under-debian