I just installed a fresh version of Ubuntu 18.04 LTS to a computer that has an Intel Graphics and Nvidia Graphics hardware capability. After the Ubuntu installation completed, I looked in "Additional Software" and found that only Nvidia Graphics drivers were installed. I have read that Intel has discontinued its Graphics Update tool - where can I find Intel Graphics drivers to install to my system? I would like to avoid third party PPA's if possible - does Intel maintain Graphics drivers for Ubuntu 18.04 LTS?
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Switching between nVidia and Intel GPU
To activate your Intel iGPU use:
sudo prime-select intel
reboot
To turn your nVidia GPU back use:
sudo prime-select nvidia
reboot
If you forget which one is running use:
prime-select query
Skylake (i7-6700) and newer processors
The Intel iGPU driver is already built into the Linux kernel. Normally you don't have to do anything special unless you have extremely new hardware, or very old hardware. There are configuration files you may have to setup for issues such as screen tearing. If you have a Skylake or newer processor you will get warning(s) that there are additional drivers you can install: Updated kernel to 4.8 now missing firmware warnings :

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