Whenever I try to start a screen-session as a non-root-user I get "No more PTYs." as a response.
Same command in the same directory as root works properly.
I tried the solution from this post but it won´t change anything:
$ ls /dev/pts
$ cat /proc/sys/kernel/pty/nr
0
$ cat /proc/sys/kernel/pty/max
4096
Even unmounting and remounting doesn´t help:
$ grep /dev/pts /proc/mounts
devpts /dev/pts devpts rw,nosuid,noexec,relatime 0 0
$ umount devpts
$ mount devpts /dev/pts -t devpts -o mode=620
Related question of mine: Starting a minecraft server using screen doesn´t work properly
Best Answer
Very likely you cannot make
screen
use the BSD pseudo terminals because it is compiled to use a specific style of pseudo terminal (never both). There are two main flavors with variations:openpty
) provides the names for the master and slave devicesIn the latter case, you could do a
and find something like this: 0123456789abcdef (perhaps longer). If you do not find that, it is compiled for Unix98 pseudo terminals.
If you do find the string, it is possible that
screen
has to run setuid'd, e.g., toroot
(so that it can modify the permissions and ownership of the master/slave pairs).Since the question implies that it works running as
root
, it is likely to work for ordinary users after something like