whenever I taped log out option my computer did not get log out

[punyabrat kumar]

ON my ubuntu 18.04 LTS the log out function is not working

when log out option is taped the desktop environment screen appears again rater then asking for password for log in again in login screen menu

when desktop screens appears after taping log out option,the pulse audio control is not workings

i.e no sound

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: compiz-core 1:0.9.13.1+18.04.20180302-0ubuntu1
Uname: Linux 4.18.0-041800rc6-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity:Unity7:ubuntu
Date: Mon Nov 26 14:14:45 2018
DistUpgraded: 2018-11-08 14:55:55,279 DEBUG found components: {'cosmic': {'multiverse', 'restricted', 'universe', 'main'}, 'cosmic-updates': {'universe', 'restricted', 'multiverse', 'main'}, 'cosmic-security': {'universe', 'restricted', 'multiverse', 'main'}}
DistroCodename: bionic
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GconfCompiz:
 /apps/compiz-1/general:
   /apps/compiz-1/general/screen0:
    /apps/compiz-1/general/screen0/options:
     active_plugins = [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] [1002:9851] (rev 40) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Mullins [Radeon R4/R5 Graphics] [103c:81e5]
GsettingsChanges:
 b'org.compiz.core' b'outputs' b"['1366x768+0+0']"
 b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl', 'resize', 'copytex', 'mousepoll', 'wall', 'regex', 'grid', 'move', 'vpswitch', 'place', 'animation', 'snap', 'compiztoolbox', 'imgpng', 'workarounds', 'expo', 'fade', 'session', 'ezoom', 'switcher', 'scale', 'unityshell']"
InstallationDate: Installed on 2016-11-07 (748 days ago)
InstallationMedia:

MachineType: HP HP 245 G5 Notebook PC
MonitorsUser.xml:
 <monitors version="2">
 </monitors>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-041800rc6-generic root=UUID=8ec31e72-2cd5-4a2e-8764-fdbe02245114 ro quiet splash psmouse.proto=bare
SourcePackage: compiz
UpgradeStatus: Upgraded to bionic on 2018-11-08 (17 days ago)
dmi.bios.date: 11/01/2016
dmi.bios.vendor: Insyde
dmi.bios.version: F.21
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 81E5
dmi.board.vendor: HP
dmi.board.version: KBC Version 73.15
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.21:bd11/01/2016:svnHP:pnHP245G5NotebookPC:pvrType1ProductConfigId:rvnHP:rn81E5:rvrKBCVersion73.15:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5336AN G=N L=SMB B=HP S=245
dmi.product.name: HP 245 G5 Notebook PC
dmi.product.sku: 1JH54PC#ACJ
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[punyabrat kumar (punyabrat)]

lightdm was having some problem..

reconfiguring gdm3 has solved my problem....