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I have Ubuntu MATE 16.04 on my laptop. I have installed Cinnamon 3.0 using embrosyn's PPA

However, now when I try to login to my laptop, every time I have to select the Cinnamon desktop manually, which is very frustrating.

How can I completely remove MATE and make Cinnamon default desktop environment?

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  • Llightdm (login manager) should remember the last choosen session - so as far as i know there should be no need to select Cinnamon over and over again. what login-manager are you using?
    – dufte
    Jun 9, 2016 at 14:53
  • That should be the default one. I didn't change anything. Installed it from Ubuntu Mate 16.04 ISO
    – byteseeker
    Jun 10, 2016 at 7:59
  • You could remove most MATE related packages simply by running sudo apt remove ubuntu-mate-*
    – dufte
    Jun 10, 2016 at 8:03

2 Answers 2

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To completely remove MATE:

Uninstall mate-desktop

To remove just mate-desktop package itself from Ubuntu 16.04 (Xenial Xerus) execute on terminal:

sudo apt-get remove mate-desktop

Uninstall mate-desktop and it's dependent packages

To remove the mate-desktop package and any other dependant package which are no longer needed from Ubuntu Xenial.

sudo apt-get remove --auto-remove mate-desktop

Purging mate-desktop

If you also want to delete configuration and/or data files of mate-desktop from Ubuntu Xenial then this will work:

sudo apt-get purge mate-desktop

To delete configuration and/or data files of mate-desktop and it's dependencies from Ubuntu Xenial then execute:

sudo apt-get purge --auto-remove mate-desktop

REF:LINK

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First, check what is going to be removed

sudo dpkg -l | grep .mate.

If you are ok with it, run this command

sudo apt autoremove --purge mate*

Command explanation

# dpkg -l       lists all installed packages
# grep .mate.   filters, so that only packages with keyword mate within their names, listed
# purge         removes mentioned package
# autoremove    tries to remove dependency packages
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