Hi I might have some updates. I have been reading all the comments but my issue was totally different. I use an Asus Tuf fx504 laptop and recently dual booted to Ubuntu 20.04. However I did not install the nvidia drivers yet. Not this issue of lagging box around cursor happened randomly one day. I then finally installed the nvidia drivers hoping it would help. I have tried logging in and out, reconfigured lightdm as some answers suggested but still the issue persists.
Iam using a dual monitor and currently on nvidia-graphics-driver-440 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-375 in Ubuntu. https://bugs.launchpad.net/bugs/1684240 Title: Lagging square around mouse pointer Status in nvidia-graphics-drivers-375 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-384 package in Ubuntu: Confirmed Status in plasma-workspace package in Ubuntu: Confirmed Bug description: (This can also be an nvidia related problem) Mouse pointer behaves as if it has an invisible square attached to it. This square covers some area next to the pointer, but it is not always clear exactly where (a link to a screenshot is shown below, please note the white square with some text from the previous webpage displayed in that window). This makes selecting text difficult, as one never knows where exactly the selection ends. Also, scrolling in some windows becomes problematic, as the pointer shadows a part of the scrollbar. When a text is being typed, one needs to make sure that the pointer is parked sufficiently far from the text (so, to make a long story short, this is very annoying). This behavior does not depend on the choice of the cursor theme. (A link to the screenshot: https://goo.gl/photos/92KKGyFs3AkdxYb79) ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: plasma-workspace 4:5.9.4-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8 Uname: Linux 4.10.0-19-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 CurrentDesktop: KDE Date: Wed Apr 19 10:41:58 2017 InstallationDate: Installed on 2015-06-05 (684 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) SourcePackage: plasma-workspace UpgradeStatus: Upgraded to zesty on 2017-04-13 (5 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-375/+bug/1684240/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp