Hi Vincent, Vincent Lefevre wrote: > In the screen source, the error comes from attacher.c: [...] > If I understand correctly, the kill() failed, probably because > the MasterPid process no longer existed.
Yes, I just recently learned that kill with signal 0 is a common way to check if another process is running and permission-wise killable (i.e. belongs to the same user if not running under root) but not killed. > And I can confirm that the SCREEN process was no longer running. I read this code the same way. Then again, starting a screen session and then killing the SCREEN process does not result in this error message, just in a frozen screen client, even when resizing the window afterwards. > So, in short, the master process died. I don't know the reason, > but it did not leave a core dump. And it doesn't seem to have a > logging mechanism. Meh. I in the meanwhile tried to reproduce your crash by running a screen session with mutt in the attachment menu for selecting a file and then wildly resizing the window as fast as I can, but to no avail. Stable as a rock. :-/ I saw you're using systemd as init system. Any chance that the screen session has been started under X initially and this X session vanished about the same time? Happenend to me recently, but IIRC the symtoms were different, too. Regards, Axel -- ,''`. | Axel Beckert <a...@debian.org>, https://people.debian.org/~abe/ : :' : | Debian Developer, ftp.ch.debian.org Admin `. `' | 4096R: 2517 B724 C5F6 CA99 5329 6E61 2FF9 CD59 6126 16B5 `- | 1024D: F067 EA27 26B9 C3FC 1486 202E C09E 1D89 9593 0EDE