Ubuntu – How to resolve missing characters in the unicode font

fontsunicode

I have tried Firefox and Chrome and on Ubuntu 14.04 LTS, and there seems to be a sizeable chunk of Unicode characters that I cannot render.

Here is one example, and here is another example.

What is the best course of action to diagnose the root cause and fix the missing characters?

Install package ttf-ancient-fonts.

sudo apt-get update
sudo apt-get install ttf-ancient-fonts

To diagnose issues such as these, try the following:

Examine to see if its a nouveau driver vs nvidia issue - i.e. the yellow pixel observation could show a driver issue. Try installing the nvidia drivers i.e. ensure you are connected to the internet - run Administration - Hardware Drivers. If you are offered a restricted NVidia driver that is not activated, then try activating it. Once installed type the following to set up your display.

gksudo nvidia-settings
Try rebuilding the ubuntu font cache through the following (i.e. may be the missing stuff is due to the fonts not being built or corrupted somehow)

sudo fc-cache -v -f

You can use curl instead, as follow

curl -O http://www.example.com/файл.zip

It will save it to файл.zip.