Wei Cai, please don't mark this a duplicate of another report, as it doesn't have any debugging information to solve the issue.
Despite this, could you please advise to https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1732195/comments/2 ? ** This bug is no longer a duplicate of bug 1278223 Mouse Flickering after adding 3rd Monitor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1732195 Title: [Dell Alienware Alpha R2] Mouse cursor flickering on primary monitor after second monitor HDMI connected to Startech USB32HD4K To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1732195/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
