Nvidia driver not loaded in ubuntu 18.04 GeForce GTX 1650 model

Gaming and Visualization Technologies General Topics and Other SDKs Drivers - Linux, Windows, MacOS
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  1. Driver not loaded…
    When I install nvidia-driver-435. I get its already a new version
    but nvidia-smi tells - failed to communicate with nvidia driver
    system info: intel i7 9750H and GeForce GTX 1650- 1024 Cores. Ubuntu 18.04 version

  2. In windows 10, it works fine but in ubuntu its not even waking up from sleep mode…
    i need to reboot everytime the system goes to sleep mode in ubuntu.

Please help me to resolve the issues