Thank you for taking the time to report this bug and helping to make Ubuntu better.
A photo (or video) of your issue may have helped highlight your issue. Providing a link to where it can be seen would be welcome too. Does the issue occur when you're using other OSes (a live system if this is your only installed OS); ie. have you ruled out hardware issues? Has it started to occur after a recent update? The more details you provide, the greater the chance of the cause being detected & thus fixed. A Support site maybe more useful if help in dealing with it is wanted, eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709 ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) -- 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/1941971 Title: there is a green horizontal line appeared on the lower side of my display when i received some data from my usb. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1941971/+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