Public bug reported:

Sometimes the mouse pointer becomes invisible for a while; then -- and I
don't understand what triggers that -- it reappears. The mouse continues
working -- mouseover and clicking works, so the only problem is that the
pointer is invisible.

Happy to give you more details to help understand what's happening.

Running Ubuntu 16.04 on a Lenovo Thinkpad Twist.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
Uname: Linux 4.4.0-040400rc3-generic x86_64
NonfreeKernelModules: wl
.tmp.unity_support_test.0:
 
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sun Sep 18 18:24:39 2016
DistUpgraded: 2016-04-27 21:46:21,054 DEBUG icon theme changed, re-reading
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:2205]
InstallationDate: Installed on 2013-10-05 (1078 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130925.1)
MachineType: LENOVO 33474HU
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-040400rc3-generic 
root=UUID=907c2dfa-5b96-4857-a1e7-6b59406e9721 ro i8042.nomux=1 i8042.reset 
quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to xenial on 2016-04-27 (143 days ago)
dmi.bios.date: 09/14/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: GDETB1WW (1.71 )
dmi.board.asset.tag: Not Available
dmi.board.name: 33474HU
dmi.board.vendor: LENOVO
dmi.board.version: Win8 STD DPK TPG
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: 
dmi:bvnLENOVO:bvrGDETB1WW(1.71):bd09/14/2015:svnLENOVO:pn33474HU:pvrThinkPadTwist:rvnLENOVO:rn33474HU:rvrWin8STDDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 33474HU
dmi.product.version: ThinkPad Twist
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs 1.0
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Fri Sep 16 08:12:02 2016
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                 890 
 vendor                                     LGD
xserver.version: 2:1.18.3-1ubuntu2.3

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 third-party-packages ubuntu xenial

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https://bugs.launchpad.net/bugs/1624897

Title:
  Mouse pointer sometimes becomes invisible for a while

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