Posted on 2006-04-25 11:08
Kylin Bell 阅读(315)
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以下的解决方案来自国外的一个论坛：
When connecting to another computer using ssh, we found that it had become impossible to run X programs on the remote computer, even though the DISPLAY variable and xhost settings were set correctly. Attempting to run an X-based program remotely produced the message "Couldn't open display". Changing /etc/X11/xdm/Xservers to eliminate the "nolisten" option and editing /etc/X11/xdm/xdm-config had no effect. Finally we discovered that it was necessary to edit /etc/sysconfig/displaymanager and set two variables as shown:
DISPLAYMANAGER_REMOTE_ACCESS="yes"
DISPLAYMANAGER_XSERVER_TCP_PORT_6000_OPEN="yes".
This finally allowed the connection.
但是我的实验发现，仅仅这样设置，重新启动后发信X依然是以-nolisten tcp参数启动的。
在SuSEFirewall中打开TCP端口6000，依然不行。
再仔细研究后发现，在/etc/opt/kde3/share/config/kdm/kdmrc文件中还有关于X启动的配置，在[X-:*-Core]段中有这样两个参数：
ServerArgsLocal=-nolisten tcp
ServerCmd=/usr/X11R6/bin/X -br
把ServerArgsLocal参数修改为
ServerArgsLocal=
再试，发现Remote X已经可以正常工作了。
注：另外发现的问题，我系统中的/etc/opt/kde3/share/config/kdm/kdmrc并不是SuSEconfig所要求的格式，我把SuSEconfig提供的Sample拷过来覆盖掉kdmrc，结果发现在KDE控制中心中运行过KDM的配置后，kdmrc又被修改回来了。这个BUG可能是我手动升级到KDE 3.5.2所引起的。我想可能正是这个原因导致SuSEconfig不能正确配置X的启动参数的。