Lost driver after reboot

Please check the kernel whether updated after reboot ,if yes, please install the driver again or use the older kernel.

Then disable kernel auto update.

Ubuntu you can try like this:

open the file /etc/apt/apt.conf.d/10periodic and change

APT::Periodic::Update-Package-Lists "1";

to

APT::Periodic::Update-Package-Lists "0";

or this command:

#apt-mark hold linux-image-generic linux-headers-generic