Blank Console after VUE log off on D220

[Mark Furman]

Here is a copy of the Xerrors dump file if this helps anyone looking at my problem. The info at the end of the file is what happens when logging off.

Thanks.

[Bill Hassell]

The last line indcates the problem. Xwindows is unable to open the network hostname called klfgln01. This is almost always DNS versus hosts. The order in which these names are resolved is controlled by /etc/nsswitch.conf and it is usually not arranged for reliable operation (ie, files then DNS).

DNS *must* have reverse lookup configured for a your system name. This is for security and to test, you can type:

nslookup klfgln01
nslookup 1.2.3.4

The two nslookup commands should resolve to the same host.

But rather than trying to fix DNS, fix your systems but changing the hosts line in /etc/nsswitch.conf to read:

hosts: files[NOTFOUND=continue UNAVAIL=continue] dns [NOTFOUND=return UNAVAIL=continue TRYAGAIN=return]

The reason to use /etc/hosts (ie, files above) is that this will always work, whereas DNS may not be working, reachable, or configured correctly. And an additional benefit, using hosts will reduce LAN traffic and can improve application performance.