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The top bar with the applets and the main system menu is missing but, what's worse, dconf and gsettings have no effect even though dconf-service is running.

What methods would you try that don't apply only on reboot or relogin?

If you need to break your session in order to test together with me, just use a combination of unity --reset-icons and killall -9 compiz. It kind of works all the time.

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  • Whenever the desktop breaks I simply reboot. But It think I've had to do a Ctrl+Alt+F1 before and use startx. Might work in your experiments.
    – WinEunuuchs2Unix
    Feb 25, 2018 at 0:55

1 Answer 1

Reset to default
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The Secret Command to Reset Ubuntu Desktop to Default Settings:

dconf reset -f /

Reset Unity:

unity --reset

Reset Unity Launcher icons:

unity --reset-icons

Reset Compiz in Ubuntu 11.04 or newer:

gconftool-2 --recursive-unset /apps/compiz-1
gconftool-2 --recursive-unset /apps/compizconfig-1
unity --reset

You can also try:

rm -rf ~/.config/compiz-1/compizconfig/*

Restart Ubuntu’s Unity Without Logging Out :

Option 1:

unity --replace

Option 2:

dconf reset -f /org/compiz/
setsid unity

Reinstall unity :

sudo apt-get -f install && sudo apt-get --reinstall install unity

Edit :

Some other fixes :

export DISPLAY=:0   
sudo dconf reset -f /org/compiz/
setsid unity

And :

sudo apt-get install compizconfig-settings-manager
DISPLAY=:0 ccsm &

Reinstall ubuntu desktop as last resort :

sudo apt-get update
sudo apt-get install --reinstall ubuntu-desktop
sudo apt-get install unity
sudo shutdown -r now
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  • This fixes some problems and deserved my vote. I still can't make the "panel" show up and clicks raise windows other than the ones they were intended for.
    – ubuntroll
    Feb 24, 2018 at 21:49
  • Check my edit. To reinstall unity.
    – An0n
    Feb 24, 2018 at 21:50
  • Unfortunately, the last command involves a relogin.
    – ubuntroll
    Feb 24, 2018 at 21:53
  • True, I let it as edit incase some other people got the same issue. I don't think you can fix ALL problems without a relog tho. You could try "sudo service lightdm restart "
    – An0n
    Feb 24, 2018 at 21:56
  • In case some other people get the same issue, they have two other questions on askubuntu. This question is unique because of the no relogin constraint. Anyway, a warning for who is interested in this question: the sudo service lightdm restart in the comment above also violates the explicit requirement in the title. It implies relogin
    – ubuntroll
    Feb 24, 2018 at 22:04

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