Thanks for the bug report. The first problem I can see here is that you are using graphics packages from the 'oibaf' PPA which are unsupported and often buggy.
Please remove that PPA using 'ppa-purge', reboot, and then if the problem continues please open a new bug. ** Changed in: xorg-server (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942883 Title: dont work laptop screen on intel uhd 620 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1942883/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs