16.04 - Unity is broken. Launcher, Menu bar, Dash disappeared. Unity reinstall doesn't work

The problem is identical to this question but with the additional problem that after trying out every thing mentioned there, unity still doesn't work.

I have tried installing/reinstalling ccsm, unity, unity-desktop. Enabling Unity Plugin didn't do anything. Removing/Renaming ~/.config/compiz-1 doesn't work.

The unity support check /usr/lib/nux/unity_support_test -p tells me my computer is capable of running unity.

OpenGL vendor string:   nouveau
OpenGL renderer string: Gallium 0.4 on NVE7
OpenGL version string:  3.0 Mesa 11.2.0
Not software rendered:    yes
Not blacklisted:          yes
GLX fbconfig:             yes
GLX texture from pixmap:  yes
GL npot or rect textures: yes
GL vertex program:        yes
GL fragment program:      yes
GL vertex buffer object:  yes
GL framebuffer object:    yes
GL version is 1.4+:       yes
Unity 3D supported:       yes

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Trying setsid unity or unity --reset-icons &disown gives following:

GLib-GIO-Message: Using the 'memory' GSettings backend.  Your settings will not be saved or shared with other applications.
unity-panel-service stop/waiting
unity7 stop/waiting
unity-panel-service start/running, process 5387
unity7 start/running, process 5507

and it sort of hangs there without giving any error or doing anything. I have to terminate the process with ctrl+C.

unity --debug gives this:

unity-panel-service stop/waiting
unity7 stop/waiting
unity-panel-service start/running, process 2334
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
/usr/bin/compiz (core) - Info: Loading plugin: core
/usr/bin/compiz (core) - Info: Starting plugin: core
[New Thread 0x7ffff3638700 (LWP 2456)]
/usr/bin/compiz (core) - Info: Loading plugin: ccp
/usr/bin/compiz (core) - Info: Starting plugin: ccp
[New Thread 0x7fffeb20e700 (LWP 2457)]
[New Thread 0x7fffeaa0d700 (LWP 2458)]
compizconfig - Info: Backend     : gsettings
compizconfig - Info: Integration : true
compizconfig - Info: Profile     : unity

again after which, it hangs there without doing anything or giving any error.

dconf dump /org/compiz/ gives:

[/]
existing-profiles=['Default', 'unity']
current-profile='unity'
[profiles/unity]
plugins-with-set-keys=['vpswitch', 'unityshell', 'mousepoll', 'place', 'composite', 'ezoom', 'move', 'decor', 'matecompat', 'staticswitcher', 'opengl', 'workarounds', 'unitymtgrabhandles', 'snap', 'scale', 'animation', 'grid', 'expo', 'fade', 'gnomecompat', 'commands', 'wall', 'switcher', 'session', 'resize']
[profiles/unity/plugins/ezoom]
zoom-box-fill-color='#2f2f2f4f'
zoom-box-outline-color='#2f2f4f9f'
[profiles/unity/plugins/wall]
thumb-highlight-gradient-shadow-color='#dfdfdfff'
arrow-base-color='#e6e6e6d9'
arrow-shadow-color='#dcdcdcd9'
[profiles/unity/plugins/unityshell]
inactive-shadow-color='#000000a5'
[profiles/unity/plugins/animation]
unminimize-effects=['animation:Glide 2']
close-matches=['((type=Normal | Unknown) | name=sun-awt-X11-XFramePeer | name=sun-awt-X11-XDialogPeer) & !(role=toolTipTip | role=qtooltip_label) & !(type=Normal & override_redirect=1) & !(name=gnome-screensaver) & !(name=gnome-screenshot)', '((type=Menu | PopupMenu | DropdownMenu | Combo | Dialog | ModalDialog | Normal) & !(class=\\.exe$))', '(type=Tooltip | Notification | Utility) & !(name=compiz) & !(title=notify-osd)']
open-matches=['((type=Normal | Unknown) | name=sun-awt-X11-XFramePeer | name=sun-awt-X11-XDialogPeer) & !(role=toolTipTip | role=qtooltip_label) & !(type=Normal & override_redirect=1) & !(name=gnome-screensaver)', '((type=Menu | PopupMenu | DropdownMenu | Combo | Dialog | ModalDialog | Normal) & !(class=\\.exe$))', '(type=Tooltip | Notification | Utility) & !(name=compiz) & !(title=notify-osd)']
[profiles/unity/plugins/switcher]
background-color='#333333d9'
[profiles/unity/plugins/decor]
active-shadow-color='#00000080'
inactive-shadow-color='#000000ff'
[profiles/unity/plugins/gnomecompat]
main-menu-key='Disabled'
run-key='Disabled'
[profiles/unity/plugins/staticswitcher]
background-color='#333333d9'
[profiles/unity/plugins/expo]
ground-color1='#b3b3b3cc'
ground-color2='#b3b3b300'

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Right now, I have installed the gnome-panel and working with that, but I don't know how to get unity back working. Any help would be really appreciated.