Public bug reported:

lsb_release -rd
Description:    Ubuntu 16.04.3 LTS
Release:        16.04

apt-cache policy unity
unity:
  Installiert:           7.4.0+16.04.20160906-0ubuntu1
  Installationskandidat: 7.4.0+16.04.20160906-0ubuntu1
  Versionstabelle:
 *** 7.4.0+16.04.20160906-0ubuntu1 500
        500 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 
Packages
        100 /var/lib/dpkg/status
     7.4.0+16.04.20160415-0ubuntu1 500
        500 http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

What happens:
1. The launcher doesn't open on click.

2. When the mouse is over the unity start menu, it disappears after a
second and the whole desktop flickers for approx. two seconds. Programs
can be used (if started via click fast enough). Shortcuts for programs
work.

The problem started after installing these updates on 2017-01-08:
poppler-utils libgles2-mesa libglapi-mesa libxtracker2 libegl1-mesa libgbm1 
libwayland-egl1-mesa libgl1-mesa-dri libgl1-mesa-glx libpoppler-glib8 
libpoppler58

I already forced reinstalling of those packages. I made a reset of the
configuration of compiz and unity, too. Nothing changed.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity 7.4.0+16.04.20160906-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-26.29~16.04.2-generic 4.13.13
Uname: Linux 4.13.0-26-generic x86_64
.tmp.unity_support_test.0:
 
ApportVersion: 2.20.1-0ubuntu2.15
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: Sat Jan 13 14:14:22 2018
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] 
(rev 02) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Core Processor Integrated Graphics 
Controller [103c:170b]
InstallationDate: Installed on 2017-07-05 (191 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 
(20170215.2)
Lsusb:
 Bus 002 Device 003: ID 0bda:0181 Realtek Semiconductor Corp. 
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Hewlett-Packard HP Z200 Workstation
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-26-generic 
root=UUID=009ab926-1690-4a1b-8339-d9a2d46531ba ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/09/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786H3 v01.09
dmi.board.asset.tag: CZC0432GRR
dmi.board.name: 0B40h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC0432GRR
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: 
dmi:bvnHewlett-Packard:bvr786H3v01.09:bd07/09/2010:svnHewlett-Packard:pnHPZ200Workstation:pvr:rvnHewlett-Packard:rn0B40h:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.family: 103C_53335X
dmi.product.name: HP Z200 Workstation
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.83-1~16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.2
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Sat Jan 13 14:07:24 2018
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.5-0ubuntu2~16.04.1
xserver.video_driver: modeset

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


** Tags: amd64 apport-bug compiz-0.9 ubuntu xenial

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https://bugs.launchpad.net/bugs/1743102

Title:
  unity start menu disappears on mouse over, launcher doesn't open

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