Stefan Helmert, thank you for reporting this and helping make Ubuntu better.
As per your logs, you are using nvidia driver version 387.34. However, as per nvidia.com the latest supported version for your card is 390.59. If you update to a later version of the driver via https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia does this resolve the issue? ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1768633 Title: desktop or window fallen over after standby To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1768633/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp