Hello, I was in the same situation
1x mini DP 1x DisplayLink USB3 to DVI/VGA 1x Laptopscreen Lenovo x230 And my mouse cursor blink, disapear or duplicate on some top bar of some windows. I'm using Linux Mint (based on Ubuntu) and to solve this problem, I added 2 lines on my /etc/environment : CLUTTER_PAINT=disable-clipped-redraws:disable-culling CLUTTER_VBLANK=True Reboot after editing and problem solve, you can enjoy your triple screens :) BTW if you use Displaylink Driver for Ubuntu the last one (actually 1.4) use a lot of CPU, I downgraded to 1.3.54. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1278223 Title: Mouse Flickering after adding 3rd Monitor Status in xorg package in Ubuntu: Incomplete Bug description: *PLEASE READ FIRST BEFORE CONSIDERING MAKING A COMMENT* If you are having an issue and want it addressed, it is most helpful to file a new report. If you were led here by DisplayLink's website, you were led here in error as no useful debugging information has been provided by the original reporter, which is necessary to root cause, and solve the issue he reported. Posting comments about how you think you have the same problem isn't helpful here. My issues is, after adding a 3rd monitor to Ubuntu 14.04, the mouse flickers (or blinks) when the cursor is on monitors one or two, but not 3. Monitor 1: 1440 x 900 - Laptop's Native Monitor Monitor 2: 1920 x 1080 - Laptop's HDMI Port's External Monitor Monitor 3: 1024 x 768 - SIIG USB 2.0 to VGA Pro Monitor Here's the video card that feeds my laptop's native monitor, monitor 2 (hdmi). lspci | grep 'VGA\|Display' 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) The 3rd Monitor is powered through a Display Link certified SIIG USB 2.0 to VGA Pro adapter (A2H1320X1374 - not sure what this number, but it is a sticker on back of the device): lsusb -tv /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M |__ Port 6: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M |__ Port 6: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M dmesg [ 1.688343] usb 2-1: New USB device found, idVendor=17e9, idProduct=02ee [ 1.688348] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1.688351] usb 2-1: Product: VGA Display Adapter [ 1.688353] usb 2-1: Manufacturer: DisplayLink [ 1.688356] usb 2-1: SerialNumber: 119785 Additionally, unity-control-center crashes sometimes after I "Restore previous settings", after selecting a resolution too high. This freezed my laptop, requiring a hard reboot. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: unity-control-center 14.04.1-0ubuntu5 ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2 Uname: Linux 3.13.0-8-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 CurrentDesktop: Unity Date: Sun Feb 9 18:43:13 2014 InstallationDate: Installed on 2014-02-02 (7 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140202) SourcePackage: unity-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1278223/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp