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Please also try adding directory that contains libnvidia-ml.so to your system PATH. Please make sure that the NVIDIA Display Driver is properly installed and present in your system. NVIDIA-SMI couldn't find libnvidia-ml.so library in your system. * And many more suggestions that I found online * Purge all nvidia* and install the nvidia-driver-390 from the distro (and not the recommended one) * Install the drivers using Nvidia installer (wihtout x11 running, using sh.
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* Install the drivers using the apt-get install nvidia-driver-418
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* Use the default that drivers that Ubuntu came with Processor : Intel(R) Core(TM) i7-8750H CPU 2.20GHz I just installed Ubuntu 18.04 on my Lenovo ThinkPad X1 Extreme, everything seems to work, beside my Nvidia driver (the worst part is that I can't connect to extend monitor).
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