Cadence 图形界面终于可以显示了

*WARNING* X Window Display Initialization failure
登HP-UX时，Xwindow总是失败，进不了cadence的GUI界面。

困扰了好几天的问题，终于解决了。。。。

原来时ssh的问题，看原文如下：

I had the same problem when I upgraded to RHEL4. It turns out that the
later versions of ssh have two modes of X11 forwarding: trusted or
untrusted. Cadence (for some reason) requires trusted mode. Doing an
ssh -Y should fix the problem.

thanks to venkarthi