I just installed Unity Tweak Tool but haven't been able to use it due to the error it keeps giving, which is: com.canonical.notify-osd

I tried looking it up but haven't come up with anything so far. How can I fix this issue?


Go to a terminal by pressing Ctrl+Alt+T and type the following commands:

sudo apt-get install --reinstall notify-osd
sudo apt-get install --reinstall overlay-scrollbar

This will install 2 packages if you don't have them or re-install them if already present and broken.

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use Synaptics and search for notify-osd .Install it .

Your Issue will be fixed.

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  • Thank you, really helped. I used next commands: 1) sudo add-apt-repository ppa:nilarimogard/webupd8 2) sudo apt-get update 3) sudo apt-get install notifyosdconfig – realmag777 Mar 8 '17 at 22:52

Simply updating the notify-osd may lead to you getting an additional error The following Schema is missing: com.canonical.desktop.interface.

The solution to this should be to:

sudo apt-get install unity-webapps-service

Though the background to this could be dependency issues. If so the command line could give a suggestion like try:

apt-get -f install

in which case you will want to:

sudo apt-get -f install

and this could well resolve the issue.

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I faced same issue. The following commands helped me,

sudo apt-get install overlay-scrollbar


sudo apt-get install notify-osd
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