"NVIDIA Optimus" is the brand name for an NVIDIA implementation of dual-GPU switching in machines. Optimus is found in many modern machines that include both Intel integrated GPUs and NVIDIA discrete GPUS, and is intended to run powerful discrete GPUs only when needed, automatically, without prompting the user.
Starting v61.4 of CloudReady, across all Editions, we have noted that Optimus- and other switchable-graphics can cause major issues that prevent booting of the OS or otherwise cause crashing. Earlier version of CloudReady do not support the use of Optimus, but are not adversely affected by it either.
In light of this new issue, Neverware recommend that Optimus- or other switchable-graphics be disabled using BIOS/UEFI controls for any machines with dual-GPUs.
- You can usually find settings to control these features, if available, in your device's BIOS/UEFI menus like "Video", "Graphics", or "Advanced".
- If you look for settings of this kind and do not find any, your model(s) may not have this feature. Unless you experience crashing or issues, don't worry.
- If you are presented with multiple settings of this kind, you should aim to disable the feature as broadly as the settings will allow.
- If you are presented with multiple graphics-options, Neverware recommends targeting "Intel" or "Integrated" graphics whenever possible, as these GPUs are usually well-supported by CloudReady while offering superior battery-life.