[X11] Invalid MIT-MAGIC-COOKIE-1 mess

English Network/Internet
1

Greetings !!
Recently, and this happens completly at random, I got some “Invalid MIT-MAGIC-COOKIE-1 key” messages.

I can not trace from where this misfunctionnal message comes from and that is frustrating.
I looked on this forum and find no satisfying workarounds, as this never happened before and I did not changed the system but did the updates.

The command xauth list displays

xauth list
sirius.dezordi.world/unix:0  MIT-MAGIC-COOKIE-1  de868872a19160bdxxx95cf11b4aeaa
sirius/unix:0  MIT-MAGIC-COOKIE-1  3db5f468e43b5c51205d63f6xxx9b03d

sirius is the hostname and dezordi.world the domain.
I put some xxx to make it cool on the hash key ^^

I saw that xhost + should resolve the messages to be displayed but this workaround is not persistent.
I saw some scripts to add to the bashrc but this is not a normal behaviour and don’t want to add it.

Question: how could I set back the system to a “normal” behaviour ?

2

No guarantees. But this has worked for me:

(1) Logout from the desktop.
(2) At the login screen, use CTRL-ALT-F1 to get to a virtual console.
(3) Login as yourself at that command line.
(4) Remove “.Xauthority” with

rm -f .Xauthority

(5) Logout at the command line
(6) Use CTRL-ALT-F7 to get back to the graphic login screen
(7) Login.

3

I did not yet overstood why it happened suddenly.
The workaround provided didn’t worked… I still have those messages displayed and some applications can not launch at all.

4

The openSUSE network configuration may be be relevant here. I assume the Xorg is sometimes started before network connectivity is complete perhaps? Are you using NetworkManager or wicked? Is ‘hostname’ consistent with ‘xauth list’ when you have the ‘magic’cookie’ errors?

5

What is output of

env | grep XAUTHORITY

?

6

This worked for me on my laptop. Thanks! I’ve been getting this on my desktop, too, will try on that next.

7

Note that if you ever log into a GUI as root you can change ownership of ~/.Xauthority to root totally by accident. So never log into a GUI as root;)