I use Ubuntu 18.04.2 LTS in ASUS laptop with processor AMD® Fx-9830p radeon r7, 12 compute cores 4c+8g × 4 with Graphics AMD® Carrizo. When I close my laptop to sleep and after sometimes, I open it, sometimes I can continue working but sometimes it shows blank and sometimes it shows squares with different colors! Hence, I have to shut down my laptop and turn it on again. Is there any correction for it?
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