Scheduled for October 17, 2019 officially released Ubuntu 19.10 version has a new action, Canonical announced the default Nvidia GPU drivers that came on the closed-source version of the ISO, and the program has licensed NVIDIA's. So why Ubuntu tied it in closed source installation package? The official explained that this is to improve the overall Ubuntu installation experience.
According to a bug report , offline, users can choose to install third-party drivers on the Ubuntu desktop, but even if this option is selected, it can not install the Nvidia proprietary drivers, because it does not exist in the ISO pool.
The main solution is conventional and Nvidia proprietary drivers are added to the Ubuntu ISO image. This program enables Ubuntu x86_64 ISO size increased to 2.1GB.
Need to affirm that, Nvidia driver is not enabled by default, users who need it can be selected manually.
At the same time, still Nouveau open-source driver as the default GPU driver for the new Ubuntu installation and "real-time" session