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enter image description hereYesterday I've upgraded Ubuntu from 18 to 20, after that my Firefox url, header, menu items all fonts have become boxes and gibberish images. Please see the screenshot attached.enter image description here. Can someone please help to resolve this issue?

Update: Not only Firefox, I see all the Openoffice calc or writer menu are also garbled.enter image description here

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  • Which is your display language? Is the package fonts-dejavu-core installed? Oct 5, 2020 at 6:02
  • Display language is English. When I did fc-list | grep dejavu it listed many dejavu fonts like Sans, Mono, Condensed. Not sure this is what you meant:
    – Imran K
    Oct 5, 2020 at 6:38
  • I asked about the package: apt policy fonts-noto-core Oct 5, 2020 at 6:43
  • Also, what does this command output: fc-match Oct 5, 2020 at 6:44
  • apt policy fonts-noto-core ` Installed: 20200323-1build1~ubuntu20.04.1 Candidate: 20200323-1build1~ubuntu20.04.1 Version table: *** 20200323-1build1~ubuntu20.04.1 500 500 us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 us.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages 100 /var/lib/dpkg/status 20200323-1 500 500 us.archive.ubuntu.com/ubuntu focal/main amd64 Packages 500 us.archive.ubuntu.com/ubuntu focal/main i386 Packages`
    – Imran K
    Oct 5, 2020 at 7:00

1 Answer 1

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Still could not find the root cause of it. Only resetting to the default settings by

dconf reset -f /

brought back the fonts in Firefox and Open Office.

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  • Based on this solution, it looks like a system font setting was changed to refer to a symbol font.
    – xiota
    Oct 25, 2020 at 10:04

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