This only seems to be affecting one user. He has a NIS account and has tried 2 NIS accounts to make sure. He's running a Mac with the latest X2Go (2.7.11) connecting to a Fedora 25 server with NIS, choosing the MATE desktop and audio disabled. We made sure to check the security settings as per this older post screenshot <http://lists.x2go.org/pipermail/x2go-dev/attachments/20151013/f02b140a/attachment-0001.png> and confirmed the .Xauthority permissions problem <http://lists.x2go.org/pipermail/x2go-dev/2015-October/010733.html> does not exist. Here are some debug-enabled logs.
Feb 16 21:11:57 ourserver /usr/bin/x2gostartagent: x2gostartagent called with options: 800x600 adsl 16m-jpeg-9 unix-kde-depth_32 us query 0 D MATE both Feb 16 21:11:57 ourserver /usr/bin/x2gosessionlimit[25474]: x2gosessionlimit has been called Feb 16 21:11:57 ourserver /usr/bin/x2golistsessions[25477]: x2golistsessions has been called with options: --all-servers Feb 16 21:11:59 ourserver /usr/sbin/x2gocleansessions[26305]: NISuser-64-1487297518_stDMATE_dp32: state file for this session does not exist: /tmp/.x2go-NISuser/C-NISuser-64-1487297518_stDMATE_dp32/state (this can be ignored during session startups) Feb 16 21:12:00 ourserver /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Feb 16 21:12:00 ourserver /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Feb 16 21:12:00 ourserver /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: NISuser-64-1487297518_stDMATE_dp32 pre-start Feb 16 21:12:00 ourserver /usr/bin/x2gostartagent: successfully started X2Go agent session with ID NISuser-64-1487297518_stDMATE_dp32 Feb 16 21:12:00 ourserver /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Feb 16 21:12:00 ourserver /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Feb 16 21:12:00 ourserver /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: NISuser-64-1487297518_stDMATE_dp32 post-start Feb 16 21:12:01 ourserver /usr/bin/x2gostartagent: blocking creation of agent's keyboard file /tmp/.x2go-NISuser/C-NISuser-64-1487297518_stDMATE_dp32/keyboard as requested by session startup command Feb 16 21:12:05 ourserver audit: CRYPTO_KEY_USER pid=25308 uid=0 auid=xxxx ses=916 msg='op=destroy kind=server fp=SHA256:ed:ac:95:b9:6d:a7:65:a8:79:a8:79:4e:41:3c:6b:58:c8:5b:37:10:c1:6a:bc:8f:2f:1c:f1:00:98:4f:2a:78 direction=? spid=25774 suid=xxxx exe="/usr/sbin/sshd" hostname=? addr=? terminal=? res=success' Feb 16 21:12:05 ourserver /usr/bin/x2gocmdexitmessage: x2gocmdexitmessage called with options: NISuser-64-1487297518_stDMATE_dp32 Feb 16 21:12:05 ourserver audit: USER_END pid=25308 uid=0 auid=xxxx ses=916 msg='op=PAM:session_close grantors=pam_selinux,pam_loginuid,pam_selinux,pam_namespace,pam_keyinit,pam_keyinit,pam_limits,pam_systemd,pam_unix acct="NISuser" exe="/usr/sbin/sshd" hostname=ipaddress addr=ipaddress terminal=ssh res=success' Feb 16 21:12:05 ourserver audit: CRED_DISP pid=25308 uid=0 auid=xxxx ses=916 msg='op=PAM:setcred grantors=pam_unix acct="NISuser" exe="/usr/sbin/sshd" hostname=ipaddress addr=ipaddress terminal=ssh res=success' Feb 16 21:12:05 ourserver audit: USER_END pid=25308 uid=0 auid=xxxx ses=916 msg='op=login id=xxxx exe="/usr/sbin/sshd" hostname=ipaddress addr=ipaddress terminal=ssh res=success' Feb 16 21:12:05 ourserver audit: USER_LOGOUT pid=25308 uid=0 auid=xxxx ses=916 msg='op=login id=xxxx exe="/usr/sbin/sshd" hostname=ipaddress addr=ipaddress terminal=ssh res=success'