openSUSE Forums: ssh: X11 forwarding request failed on channel 0

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ssh: X11 forwarding request failed on channel 0 Dec 16th 2012, 20:13 Hi! I've detected an X11 formwarding error since some days ago Code: fernando@andromeda:~> ssh -X aldebaran X11 forwarding request failed on channel 0 Last login: Sat Dec 15 11:23:51 2012 from andromeda.samara.com.es Have a lot of fun... fernando@aldebaran:~> Opensuse 12.2 on both, client and sever. Server 32 bits, client 64 bits. I have X11Forwarding set to Yes on server /etc/ssh/sshd_config Code: aldebaran:/home/fernando # cat /etc/ssh/sshd_config #      $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 markus Exp $ # This is the sshd server system-wide configuration file.  See # sshd_config(5) for more information. # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented.  Uncommented options change a # default value. #Port 22 #Protocol 2,1 Protocol 2 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh/ssh_host_rsa_key #HostKey /etc/ssh/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 768 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH                                                                                                                                                              #LogLevel INFO                                                                                                                                                                                                                                                                                                                                                      # Authentication: #LoginGraceTime 2m PermitRootLogin no #StrictModes yes #MaxAuthTries 6 #RSAAuthentication yes #PubkeyAuthentication yes #AuthorizedKeysFile    .ssh/authorized_keys # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords, change to no here! PasswordAuthentication no PermitEmptyPasswords no # Change to no to disable s/key passwords #ChallengeResponseAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes # Set this to 'yes' to enable support for the deprecated 'gssapi' authentication # mechanism to OpenSSH 3.8p1. The newer 'gssapi-with-mic' mechanism is included # in this release. The use of 'gssapi' is deprecated due to the presence of # potential man-in-the-middle attacks, which 'gssapi-with-mic' is not susceptible to. #GSSAPIEnableMITMAttack no   # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication mechanism. # Depending on your PAM configuration, this may bypass the setting of # PasswordAuthentication, PermitEmptyPasswords, and # "PermitRootLogin without-password". If you just want the PAM account and # session checks to run without PAM authentication, then enable this but set # ChallengeResponseAuthentication=no UsePAM yes #AllowTcpForwarding yes #GatewayPorts no X11Forwarding yes #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes #TCPKeepAlive yes #UseLogin no #UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10 # no default banner path #Banner /some/path # override default of no subsystems Subsystem      sftp    /usr/lib/ssh/sftp-server # This enables accepting locale enviroment variables LC_* LANG, see sshd_config(5). AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL aldebaran:/home/fernando # I've read similar error on SLES10 as a result of a default patch. Has someone detected same error? regards

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