[Bug 371181] [NEW] xauth authentication not working

[Paul Civati]

Public bug reported:

Since upgrading to 9.04 I find that xauth for X11 capable SSH sessions
does not work - nothing has changed on the server side.

This applies to two separate 9.04 client machines and this functionality
worked when they were previously 8.04 and 8.10 systems.

You can see that X11 forwarding has been negotiated because the $DISPLAY
has been set.

LOCAL:

paul at tuscan:~ % xauth list 
tuscan/unix:0  MIT-MAGIC-COOKIE-1  07587ffe64e21a256756ae9959e8b1c5
localhost.localdomain/unix:0  MIT-MAGIC-COOKIE-1  07587ffe64e21a256756ae9959e8b1c5


REMOTE:

paul at vantage:~ % echo $DISPLAY 
localhost:11.0
paul at vantage:~ % exmh & 
[1] 38127
paul at vantage:~ % BgRegister X server insecure (must use xauth-style authorization); command ignored
BgRegister X server insecure (must use xauth-style authorization); command ignored
BgRegister X server insecure (must use xauth-style authorization); command ignored
BgRegister X server insecure (must use xauth-style authorization); command ignored
BgRegister X server insecure (must use xauth-style authorization); command ignored
exmh-bg cannot rendez-vous with UI - exiting.
  Usually this is because Tk send is not working.
  Check the notes under Frequently Asked Questions #4a and #4b.
  You can find this under the Help menu.

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New

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xauth authentication not working
https://bugs.launchpad.net/bugs/371181
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