Sometimes my system gets freezed, after that my icons looks crashed and the terminal fonts are also crashed enter image description here Whenever I restart it looks normal, how to fix this?

  • looks like a graphics card/driver issue to me – Dan May 5 '15 at 4:37

Sometimes my system gets freezed

You needs to figure out what's triggered the freeze,
try tail /var/log/dmesg or journalctl -f get ERR logs

how to fix this?

You can try restart Xserver, instead of power cycle your machine.
Using keyboard combination ctrl+art+backspace
or using GUI implements
or killall X (you ought to start Xserver at tty on your own)

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