I am unable to lock my desktop in Elementary OS, juno. I had earlier installed GNOME desktop and when I tried to remove it, I was left with no desktop environment. I then installed xfce desktop environment, followed by pantheon. Although I am able to login into a pantheon environment, I am unable to remove xfce or ubuntu completely and have a pure elementary desktop experience. The lock screen also does not work. Using the command 'windows+L' returns nothing, neither does locking screen via the console.

My xsessions returns the following:

ls -l /usr/share/xsessions

total 20
-rw-r--r-- 1 root root  183 Sep 14  2018 pantheon.desktop
-rw-r--r-- 1 root root  323 May  2  2018 ubuntu-communitheme-snap.desktop
-rw-r--r-- 1 root root  247 May  2  2018 ubuntu.desktop
-rw-r--r-- 1 root root 5465 Sep 21  2016 xfce.desktop

Output for

grep -r --include '*.list' '^deb ' /etc/apt/ | sed -re 's/^\/etc\/apt\/sources\.list((\.d\/)?|(:)?)//' -e 's/(.*\.list):/\[\1\] /' -e 's/deb http:\/\/ppa.launchpad.net\/(.*?)\/ubuntu .*/ppa:\1/'

[miktex.list] deb http://miktex.org/download/ubuntu xenial universe
[elementary.list] ppa:elementary-os/stable
[windscribe-repo.list] deb https://repo.windscribe.com/ubuntu zesty main
[appcenter.list] deb http://packages.elementary.io/appcenter bionic main
[patches.list] ppa:elementary-os/os-patches
[spotify.list] deb http://repository.spotify.com stable non-free
[ubuntuhandbook1-ubuntu-audacity-bionic.list] ppa:ubuntuhandbook1/audacity
deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb http://us.archive.ubuntu.com/ubuntu/ bionic universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
deb https://dl.winehq.org/wine-builds/ubuntu/ cosmic main

  • Can you please update the question with the output of this command, grep -r --include '*.list' '^deb ' /etc/apt/ | sed -re 's/^\/etc\/apt\/sources\.list((\.d\/)?|(:)?)//' -e 's/(.*\.list):/\[\1\] /' -e 's/deb http:\/\/ppa.launchpad.net\/(.*?)\/ubuntu .*/ppa:\1/'?
    – Hasan
    Commented Apr 29, 2019 at 19:40
  • I have updated the question @Hasan Commented Apr 30, 2019 at 2:11

1 Answer 1


Please execute the series of commands from the terminal,

sudo apt-get purge xfce4
sudo apt-get purge ubuntu-desktop
sudo apt-get autoremove
sudo snap remove communitheme
sudo apt-get autoremove
sudo apt-get clean
sudo apt-get autoclean
sudo apt-get -f install
sudo apt-get update
sudo apt-get upgrade

Here we are removing xfce desktop, ubuntu desktop, community theme, cleaning the system and making an update & upgrade after that.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.