Heyho, problem solved. I had an incorrect line in my ~/.gnupg/gpg-agent.conf, indicated by ~/.xsession-errors. This prevented Xsession from starting wich caused the Xserver to exit. Until the last update, these lines seemed to be ineffective (I touched them a year ago, because thunderbird did not cache my password, maybe it works now).
Cheers aureliano -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/trinity-f9811fc8-f029-42f6-b59a-c47629e57cca-1408209423756@3capp-webde-bs14

