My problem is solved now. I updated the system and there is no problem now. Thanks.
** Changed in: xorg (Ubuntu) Assignee: (unassigned) => Umut Özdemir (exclipit) ** Changed in: xorg (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1580188 Title: screen colors decays after wake up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1580188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs