Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
E
Fixed it. System crashed, so installed ubuntu again with user pi password raspberry. Now i dont have this problem anymore.
Maybe it’s a coincidence but otherwise it may be smart to put it in the manual.