我正在尝试设置x11转发来监视嵌入式机器人平台上的视频,但我似乎无法让板子生成图形输出.我在直接通过以太网连接的Beagleboard xM上运行Arch
Linux(虽然我以后打算使用WiFi).当我尝试设置DISPLAY变量它会接受它,但是当我尝试运行一个x11应用程序是说：
(Object:287): Gtk-WARNING **: cannot open display: [displaynamehere]
显然,[displaynamehere]是我试图设置为显示的,但没有显示位置似乎工作.什么奇怪的是,每当我通过ssh -X连接,它不给我任何错误,它不保存我的DISPLAY变量.
(编辑)我也检查了调试日志并得到这个输出：
debug2: load_server_config: filename /etc/ssh/sshd_config debug2: load_server_config: done config len = 315 debug2: parse_server_config: config /etc/ssh/sshd_config len 315 debug3: /etc/ssh/sshd_config:53 setting AuthorizedKeysFile .ssh/authorized_keys debug3: /etc/ssh/sshd_config:75 setting ChallengeResponseAuthentication no debug3: /etc/ssh/sshd_config:96 setting UsePAM yes debug3: /etc/ssh/sshd_config:101 setting X11Forwarding yes debug3: /etc/ssh/sshd_config:104 setting PrintMotd no debug3: /etc/ssh/sshd_config:108 setting UsePrivilegeSeparation sandBox debug3: /etc/ssh/sshd_config:124 setting Subsystem sftp /usr/lib/ssh/sftp-server debug1: sshd version OpenSSH_6.3,OpenSSL 1.0.1e 11 Feb 2013 debug3: Incorrect RSA1 identifier debug1: read PEM private key done: type RSA debug3: Incorrect RSA1 identifier debug3: Could not load "/etc/ssh/ssh_host_rsa_key" as a RSA1 public key debug1: private host key: #0 type 1 RSA debug3: Incorrect RSA1 identifier debug1: read PEM private key done: type DSA debug3: Incorrect RSA1 identifier debug3: Could not load "/etc/ssh/ssh_host_dsa_key" as a RSA1 public key debug1: private host key: #1 type 2 DSA debug3: Incorrect RSA1 identifier debug1: read PEM private key done: type ECDSA debug3: Incorrect RSA1 identifier debug3: Could not load "/etc/ssh/ssh_host_ecdsa_key" as a RSA1 public key debug1: private host key: #2 type 3 ECDSA debug1: rexec_argv[0]='/usr/bin/sshd' debug1: rexec_argv[1]='-ddd' debug3: oom_adjust_setup Set /proc/self/oom_score_adj from 0 to -1000 debug2: fd 3 setting O_NONBLOCK debug1: Bind to port 22 on 0.0.0.0. Bind to port 22 on 0.0.0.0 Failed: Address already in use. debug2: fd 3 setting O_NONBLOCK debug3: sock_set_v6only: set socket 3 IPV6_V6ONLY debug1: Bind to port 22 on ::. Server listening on :: port 22.
任何建议将不胜感激,我一直在尝试谷歌近一个星期,现在无济于事.
非常感谢！
解决方法
在服务器上
vim /etc/sshd_config AllowAgentForwarding yes AllowTcpForwarding yes X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost no
重新启动sshd守护进程：
service sshd restart yum -y update xauth apt-get -y update xauth yum -y install xauth apt-get -y install xauth
现在退出服务器：
exit
设置本地的DISPLAY env var：
export DISPLAY=:0.0
并调用与服务器的可信SSH连接：
ssh -Y $ssh_user@$ssh_server
用图形应用验证成功.如果需要,安装支持X11转发的应用程序.举个例子：
yum -y install xclock
和行动!!!
for i in {1..3} ; do bash -c "xclock &" ; done ;
