After an upgrade of Kubuntu yesterday, all my backups fail. Here is a typical command with rsync's error messages: It is followed with me opening a secure shell to sirius to demonstrate that it's not a Hostkey or private/public key issue, all the private keys have been loaded in the agent so passwords/passphrases are not necessary Then I used scp to copy a file across Finally I add the version of rsync that is installed. John ------------------------------------------------------------------------------- jjjacq@aldebaran:~$ rsync -e ssh -r -avz /home/jjjacq/Documents/web/ sirius:web/ protocol version mismatch - is your shell clean? (see the rsync man page for an explanation) rsync error: protocol incompatibility (code 2) at compat.c(62) rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(226) [sender=3.1.0] jjjacq@aldebaran:~$ jjjacq@aldebaran:~$ ssh sirius Last login: Mon Apr 28 16:46:08 2014 from 192.168.1.11 Linux 2.4.22. All that glitters is not gold; all that wander are not lost. sirius ~$ sirius ~$ logout Connection to sirius closed. jjjacq@aldebaran:~$ scp john.asc sirius:tmp/ john.asc 100% 1337 1.3KB/s 00:00 jjjacq@aldebaran:~$ rsync --version rsync version 3.1.0 protocol version 31 -----------------------------------------------------------------------------
*** This bug has been marked as a duplicate of bug 10532 ***