X applications (xclock, xterm) fail to run on ssh -X - HP UX

This is a discussion on X applications (xclock, xterm) fail to run on ssh -X - HP UX ; I use "ssh -X" to login to hpux machine successfully. However X applications fail to run. Please help to solve this problem. Thanks. $ xclock Error: Can't open display: $ xterm xterm Xt error: Can't open display: $ ssh -v ...

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Thread: X applications (xclock, xterm) fail to run on ssh -X

  1. X applications (xclock, xterm) fail to run on ssh -X

    I use "ssh -X" to login to hpux machine successfully.
    However X applications fail to run.
    Please help to solve this problem.
    Thanks.
    $ xclock
    Error: Can't open display:
    $ xterm
    xterm Xt error: Can't open display:
    $ ssh -v
    OpenSSH_4.5p1+sftpfilecontrol-v1.1-hpn12v14, OpenSSL 0.9.7l 28 Sep
    2006
    HP-UX Secure Shell-A.04.50.011, HP-UX Secure Shell version
    $ uname -a
    HP-UX hp1 B.11.31 U ia64

  2. Re: X applications (xclock, xterm) fail to run on ssh -X

    On Sep 4, 11:22*am, TsanChung wrote:
    > I use "ssh -X" to login to hpux machine successfully.
    > However X applications fail to run.
    > Please help to solve this problem.
    > Thanks.
    > $ xclock
    > Error: Can't open display:
    > $ xterm
    > xterm Xt error: Can't open display:
    > $ ssh -v
    > OpenSSH_4.5p1+sftpfilecontrol-v1.1-hpn12v14, OpenSSL 0.9.7l 28 Sep
    > 2006
    > HP-UX Secure Shell-A.04.50.011, HP-UX Secure Shell version
    > $ uname -a
    > HP-UX hp1 B.11.31 U ia64


    your DISPLAY variable isn't set. Make sure that x forwarding is
    enabled for the client and the server.

  3. Re: X applications (xclock, xterm) fail to run on ssh -X

    On Sep 4, 12:12*pm, OldSchool wrote:
    > On Sep 4, 11:22*am, TsanChung wrote:
    >
    > > I use "ssh -X" to login to hpux machine successfully.
    > > However X applications fail to run.
    > > Please help to solve this problem.
    > > Thanks.
    > > $ xclock
    > > Error: Can't open display:
    > > $ xterm
    > > xterm Xt error: Can't open display:
    > > $ ssh -v
    > > OpenSSH_4.5p1+sftpfilecontrol-v1.1-hpn12v14, OpenSSL 0.9.7l 28 Sep
    > > 2006
    > > HP-UX Secure Shell-A.04.50.011, HP-UX Secure Shell version
    > > $ uname -a
    > > HP-UX hp1 B.11.31 U ia64

    >
    > your DISPLAY variable isn't set. *Make sure that x forwarding is
    > enabled for the client and the server.


    Using "ssh -X" will set the DISPLAY variable.
    # grep X11Forward /opt/ssh/etc/sshd_config
    X11Forwarding yes
    # X11Forwarding no

    # ps -ef|grep ssh
    root 11399 1 0 Sep 3 ? 0:00 sshd: root@pts/6
    twong 11862 11861 0 Sep 3 ? 0:00 /opt/ssh/libexec/sftp-
    server
    root 12729 1 0 10:39:02 ? 0:00 sshd: twong [priv]
    root 4796 1 0 Sep 3 ? 0:01 sshd: root@pts/1
    root 3885 1 0 Sep 3 ? 0:01 sshd: root@pts/0
    root 9407 1 0 02:10:58 ? 0:00 sshd: root@pts/9
    root 7733 1 0 Sep 3 ? 0:00 sshd: root@pts/2
    twong 11861 11858 0 Sep 3 ? 0:04 sshd: twong@notty
    twong 9263 9260 0 02:06:04 ? 0:00 sshd: twong@pts/8
    root 9086 1 0 02:00:08 ? 0:00 sshd: twong [priv]
    root 24817 1 0 17:36:47 ? 0:00 sshd: twong [priv]
    twong 19368 19365 0 14:26:28 ? 0:00 sshd: twong@pts/4
    root 19365 1 0 14:26:28 ? 0:00 sshd: twong [priv]
    root 11858 1 0 Sep 3 ? 0:00 sshd: twong [priv]
    root 9260 1 0 02:06:04 ? 0:00 sshd: twong [priv]
    twong 24820 24817 0 17:36:47 ? 0:00 sshd: twong@pts/5
    twong 9089 9086 0 02:00:08 ? 0:00 sshd: twong@pts/7
    root 10023 1 0 02:31:10 ? 0:00 /opt/ssh/sbin/sshd

  4. Re: X applications (xclock, xterm) fail to run on ssh -X

    On Sep 5, 9:25*am, TsanChung wrote:


    > > > $ xclock
    > > > Error: Can't open display:
    > > > $ xterm
    > > > xterm Xt error: Can't open display:


    The error messages are clear enough, the DISPLAY isn't set
    properly....

  5. Re: X applications (xclock, xterm) fail to run on ssh -X

    On Sep 5, 11:58*am, OldSchool wrote:
    > On Sep 5, 9:25*am, TsanChung wrote:
    >
    > > > > $ xclock
    > > > > Error: Can't open display:
    > > > > $ xterm
    > > > > xterm Xt error: Can't open display:

    >
    > The error messages are clear enough, the DISPLAY isn't set
    > properly....


    I do not understand why DISPLAY isn't set properly (it is empty) by
    sshd on hpux when I use "ssh -X".
    Do OpenSSH_4.5p1 support the "-X" option?
    Is /opt/ssh/etc/sshd_config the config file for sshd on hpux?
    The DISPLAY is set properly by sshd on linux when I use "ssh -X".

  6. Re: X applications (xclock, xterm) fail to run on ssh -X

    TsanChung wrote:
    > On Sep 5, 11:58 am, OldSchool wrote:
    >> On Sep 5, 9:25 am, TsanChung wrote:
    >>
    >>>>> $ xclock
    >>>>> Error: Can't open display:
    >>>>> $ xterm
    >>>>> xterm Xt error: Can't open display:

    >> The error messages are clear enough, the DISPLAY isn't set
    >> properly....

    >
    > I do not understand why DISPLAY isn't set properly (it is empty) by
    > sshd on hpux when I use "ssh -X".
    > Do OpenSSH_4.5p1 support the "-X" option?
    > Is /opt/ssh/etc/sshd_config the config file for sshd on hpux?
    > The DISPLAY is set properly by sshd on linux when I use "ssh -X".


    Is xauth in your path on the remote system?

    Jeff Long

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