ENODEV on /dev/ptmx

User Support General
1

In an AppVM based on debian-11 template, script fails to launch after this:

openat(AT_FDCWD, "/dev/ptmx", O_RDWR)   = -1 ENODEV (No such device)

I find the thing puzzling, as a debian-10 AppVM has no such issue, despite /dev/ptmx having same major/minor/perms. Any idea where such a difference could come from ?

Update: This also caused my running screen to refuse creating more windows, and a VM restart made the problem go away. Could not find anything meaningful in the log to explain this event.

2

Works for me.
Where did you get the template, and what changes have you made to it?

3

this is major problem here, i think it mean there is no /dev/ptmx (it tries to open /dev/ptmx as RW and return ENODEV (mean pathname refers to a device special file and no corresponding device exists))
edit:4.1 is still in beta