Same for me, Ubuntu 14.04LTS I am using a IOGEAR GUC2020DW6 and a Sony Vaio Intel i5 7 series. I have a Samsung 32" 2560x1440 and the usb is running a 27" 1920x1080
I notice that the blinking has something to do with the difference of resolution, because, there were a few times when xrandr reported my Screen0 to be 4480x1080 and the resulting visual effect was a distorted difference on the 32" monitor. However, everything above the 1080 resolution border displayed just fine.... and the cursor DID NOT BLINK, the desktop looked natural as it should. I should also mention that I am limited to running the 32" monitor with a custom resolution of 2560x1440x44.00Hz due to a limiting factor of my laptop video architecture, it wont run at 60Hz, windows or linux. Therefore I suspect the answer lies somewhere in between. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1278223 Title: Mouse Flickering after adding 3rd Monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1278223/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs