Leaks in the Xorg process are usually the fault of applications. Because application resources exist in the Xorg process and are allowed to outlive the application itself.
One known cause I can think of is LibreOffice. So please try logging out and in again and never starting LibreOffice. If that doesn't fix it then please follow the same steps with all your other big apps to try and find the cause. ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Package changed: xorg-server (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1906906 Title: Memory leak in X.org To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1906906/+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