Public bug reported: I just installed a fresh copy of Xubuntu 18.04 on a new system with a 4k screen, and I am having the same issue.
When I boot and login the mouse is huge when on the desktop, but changes sizes when hovering over certain applications. As was reported upstream, if I change the cursor size setting or simply change the cursor theme from "Default" to "DMZ (Black)" and then back to "Default", the problem disappears. The size is normal and constant no matter what application I hover over. I found this older post from someone who was using Xubuntu 14.04 a few years ago, and I believe it to be the same bug. The images and behavior accurately describe what we are seeing in 18.04. https://superuser.com/questions/768830/mouse-cursor-scaling-issues-in- xubuntu-14-04-with-xfce-4-10 I'm also wondering if the issue is somehow related to this bug: https://bugzilla.xfce.org/show_bug.cgi?id=7415 In that instance I see no mention of size changes, but they similarly have changes in the applied cursor theme based on whether the mouse is hovering over the desktop or other applications. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xfce4-settings 4.12.3-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-21.22-generic 4.15.17 Uname: Linux 4.15.0-21-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: XFCE Date: Sun May 13 07:13:57 2018 ExecutablePath: /usr/bin/xfce4-settings-manager InstallationDate: Installed on 2018-05-10 (2 days ago) InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: xfce4-settings UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: xfce4-settings Importance: Unknown Status: Unknown ** Affects: xfce4-settings (Ubuntu) Importance: Undecided Status: New ** Tags: 4k amd64 apport-bug bionic cursor display mouse xfce ** Bug watch added: Xfce Bugzilla #14294 https://bugzilla.xfce.org/show_bug.cgi?id=14294 ** Also affects: xfce4-settings via https://bugzilla.xfce.org/show_bug.cgi?id=14294 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1770948 Title: Mouse cursor size is large and inconsistent on 4K displays in XFCE To manage notifications about this bug go to: https://bugs.launchpad.net/xfce4-settings/+bug/1770948/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs