Same behavior here - also using 3rd monitor via kensington display
link. Mouse flickering like mentioned above - some information about my
config:
Ubuntu 14.04
Monitor links:
first DVI 1680x1050
second HDMI 1680x1050
third Kensington Displaylink usb 1680x1050
lspci
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 12)
lsusb -tv
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 1: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid,
1.5M
|__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid,
1.5M
|__ Port 2: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid,
1.5M
|__ Port 6: Dev 5, If 0, Class=Vendor Specific Class, Driver=udl, 480M
dmesg:
[ 2.908713] usb 1-1.6: New USB device found, idVendor=17e9, idProduct=0036
[ 2.908718] usb 1-1.6: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2.908721] usb 1-1.6: Product: Kensington M01063
[ 2.908724] usb 1-1.6: Manufacturer: DisplayLink
[ 2.908727] usb 1-1.6: SerialNumber: 2012C1001134
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1278223
Title:
Mouse Flickering after adding 3rd Monitor
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