I just updated Ubuntu to version 17.04. When logging back after rebooting, GNOME seems to be behaving strangely:

Rogue top bar:

This strange "font" is used everywhere by the GNOME launcher:

Rogue launcher:

I've tried to reset the font using gnome-tweak-tool, but it doesn't change a thing.

How could this happen ? How can I set or reset the font ?

  • Does the issue persist after a reload of Gnome Shell? You can reload it either through (1) logout & login or (2) the Gnome Shell command line (open with Alt+F2 by default) command r (press Enter to run the command). Option (2) will retain all running applications and their windows. Sep 21, 2017 at 20:59
  • I'll try reloading, but rebooting doesn't change a thing @David
    – Yk Cheese
    Sep 22, 2017 at 5:48
  • I upgraded to 17.10, and with it the Gnome Desktop. I'm also having a lot of font problems, but they seem to be limited to 3rd party apps.
    – tim.rohrer
    Oct 24, 2017 at 12:54
  • @tim hmm my problems are limited to the system, all fonts in apps behave normally... Anyway I hope upgrading to 17.10 'll fix my problems ..?
    – Yk Cheese
    Oct 24, 2017 at 13:03
  • Dang. I just lost everything I had typed to you. Short version is that I'm seeing a couple of issues. Some cases where I get brackets (a little different than yours) in one 3rd party app, but the biggest issue is that several of my fonts (i.e., 3rd party app title bars) have different backgrounds or are otherwise not clear. I downloaded Atom, and when I open a file dialogue, the character background is dark black while the characters are dark gray. I'm still searching for a solution.
    – tim.rohrer
    Oct 24, 2017 at 13:16

3 Answers 3


I had the same issue.

My solution was like so:

  • open a terminal (alt F2, gnome-terminal)
  • sudo apt-get remove fonts-cantarell
  • sudo apt-get install fonts-cantarell

And all fonts appear.

  • I'll try that as soon as l can.
    – Yk Cheese
    Nov 14, 2017 at 21:16

Try navigating to fonts in the Tweak Tool. To help you, here is a picture of the Tweak Tool's font section:enter image description here Once you are able to get to fonts, just try changing the font to anything Cantarell. It doesn't matter if it is Bold or Italic, you are just trying to apply a random font. Hope this fixed your problem.

  • somehow it's even worse : doing that seems to spread the infection.
    – Yk Cheese
    Oct 10, 2017 at 17:29

If the problem is not OS-Wide, then you can create a new user and copy your files over to said user. Once all your files are on the new user you can delete the old user.

  • That's probably the most convenient solution. But I'm sure this isn't the best way.
    – Yk Cheese
    Oct 12, 2017 at 16:28

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .