Sorry, it doesn't seem to have fixed the issue. I installed the image, extras, and both headers packages. No cloud or tools (they aren't installed in our system usually).
root@client:~# uname -a Linux client 4.4.0-98-generic #121~lp1729337 SMP Wed Nov 1 14:29:16 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux root@client:~# dmesg ... snip ... [ 9.177979] CIFS VFS: validate protocol negotiate failed: -11 [ 9.178594] CIFS VFS: cifs_mount failed w/return code = -5 root@client:~# mount.cifs --verbose //server/share /mnt/share -o rw,user,credentials=/etc/samba/credentials.share,uid=33,gid=33,file_mode=0770,dir_mode=0770,exec,soft,noserverino,vers=3.0 domain=ourdomain mount.cifs kernel mount options: ip=1.2.3.4,unc=\\server\share,file_mode=0770,dir_mode=0770,soft,noserverino,vers=3.0,uid=33,gid=33,user=www-data,,domain=ourdomain,pass=******** mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) root@client:~# -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1729337 Title: CIFS errors on 4.4.0-98, but not on 4.4.0-97 with same config To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1729337/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
