In my desktop system Kubuntu 15.10 I have the integrated graphic card (Intel HD3000) and a discrete graphic card (Nvidia GTX 550). Some days ago I attached a monitor on the iGPU and enabled it, giving me a triple head system (two monitors on the Nvidia and one on the Intel). From that moment, the mouse pointer started to leave a trail when it pass over something that is animating. I'm using nouveau for the nvidia card. I tried to upgrade to Kubuntu 16.04, but it gives me the same glitch.
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ApportVersion: 2.20-0ubuntu3
Architecture: amd64
BootLog:
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
DistUpgraded: 2016-02-24 01:06:09,804 DEBUG enabling apt cron job
DistroCodename: xenial
DistroRelease: Ubuntu 16.04
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0122] (rev 09) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. 2nd Generation Core Processor Family Integrated Graphics Controller [1043:844d]
NVIDIA Corporation GF116 [GeForce GTX 550 Ti] [10de:1244] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ZOTAC International (MCO) Ltd. GF116 [GeForce GTX 550 Ti] [19da:5194]
InstallationDate: Installed on 2015-11-19 (106 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: System manufacturer System Product Name
Package: xorg 1:7.7+13ubuntu3
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-10-generic root=UUID=679d8ad1-4664-4abd-a80a-3ac9339425bb ro quiet splash nomdmonddf nomdmonisw irqnodebug vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
Tags: xenial ubuntu single-occurrence reproducible has-workaround
Uname: Linux 4.4.0-10-generic x86_64
UpgradeStatus: Upgraded to xenial on 2016-02-24 (10 days ago)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 07/12/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3707
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8H67-V
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3707:bd07/12/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8H67-V:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.2-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.3-2ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160218-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build1
I'll attach an Xorg log file, it may be helpful