Not that I use Suse and xauth that much, but won't that add you to my .Xauthority? Allowing your to xrsh maybe?
From the manual:
To create a .Xauthority file, use mkxauth -c (see (1) above). mkxauth creates a .Xauthority file in the user’s home directory (~/), containing a ‘key’ or ‘magic cookie’ for the host it was run on (the one returned by hostname(1)). If a .Xauthority file already exists, the keys are added to it. If keys for that host already exist, they are replaced.
why can't you use:
xauth generate :0 .
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