BIOS settings

For all machines, there is a necessary change of BIOS setting for Ubuntu certification. And this setting is preloaded on machines shipped with preloaded Ubuntu.

• Disable "System configuration/Thunerbolt Auto Switch/Auto Switch"
• Enable "System configuration/Thunerbolt Auto Switch/Native Enumeration"

For machines that has AMD dGPU, there is a necessary change of BIOS setting for Ubuntu certification. And this setting is preloaded on machines shipped with preloaded Ubuntu.

• Disable "Settings/Video/Switchable Graphics/Enable Switchable Graphics"

For machines without AMD dGPU, there is a necessary change of BIOS setting for Ubuntu certification. And this setting is preloaded on machines shipped with preloaded Ubuntu.

• Enable "Settings/Video/Switchable Graphics/Enable Switchable Graphics"
• Disable "Settings/Video/Switchable Graphics/Discrete Graphics Controller Direct Output Mode"

Restricted configuration

• - Machines that has thunderbolt alpine ridge are not certified.

Note

• - The HDMI port is wired to dGPU so that HDMI will not work while dGPU is off.