If my GPU can process basic Compiz effects as seen in GNOME Classic, will they work in Unity 2D?
Enable Compiz Effects in Unity 2D – Step-by-Step Guide
compizunity-2d
Related Solutions
To solve this problem edit this file:
sudo nano /usr/share/gnome-session/sessions/gnome-classic.session
and replace this line:
RequiredProviders=windowmanager;notifications;
with this one:
RequiredProviders=windowmanager;
Then just logout and log back in and it should work fine. This solved the problem in my case.
EDIT 1:
1) to access the gnome panel menu now you need to use "windows key + alt + right click" on panels instead of "alt + right click"
2) another issue might be "alt + tab" but you just need to reassign it in Applications -> System Tools -> System Settings -> Keyboard -> Shortcuts
EDIT 2:
3) after system updates related to GTK or gnome you might need to reinstall any "custom" drivers for your graphics card, for e.g. NVIDIA linux driver
Compiz as default Unity 2D compositor
Go to a Terminal and enter:
sudoedit /usr/share/gnome-session/sessions/ubuntu-2d.session
In the fifth line, change metacity to compiz:
DefaultProvider-windowmanager=compiz
Remove window decoration from maximized windows
To solve the window decorator issue, simply run the following in the terminal or Alt+F2 and the window decoration will immediately disappear:
gconftool-2 -s -t string '/apps/compiz-1/plugins/decor/screen0/options/decoration_match' '!state=maxvert'
The same can be done using the CompizConfig Settings Manager, CCSM, if you've installed it already:
Best Answer
Probably. The goal of Unity 2d is to provide a unity-like desktop to those whose "hardware platforms cannot currently support Unity's OpenGL requirements". Check their wiki page for more info: https://wiki.ubuntu.com/Unity2D.