Troubleshooting: "No xauth data"

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Troubleshooting: "No xauth data"

I ssh into remote hosts using X11 forward all the time. Every once in a while, I'd get the following error message:

Warning: No xauth data; using fake authentication data for X11 forwarding.
/usr/X11R6/bin/xauth: error in locking authority file /home/me/.Xauthority

I remember this was caused at one point by one remote host shift one hour due to daylight saving adjustment, while another host had not. But I don't believe that is happening today.

How do I go about troubleshooting this error message?

Chieh Cheng
Fri, 17 Jul 2009 05:14:32 +0000

I just had this trouble again today. And it was frustrating, because I couldn't solve it, even after deleting .Xauthority file. So I decided to relax and do something else. After about 10 to 15 minutes, I tried again and it worked fine. Got a messages that said it created a new .Xauthority file:

/usr/X11R6/bin/xauth: creating new authority file /home/woody/ccheng/.Xauthority

Hmmm . . . still have no idea what caused the problem in the first place and how to resolve it without waiting.

Chieh Cheng
Fri, 28 Aug 2009 03:37:02 +0000

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