Lenovo Yoga 900

Still working on installation, wiki will come soon.

Forum
see https://forums.gentoo.org/viewtopic-p-8223726.html#8223726 for intallation discussion

Graphics
See Intel.

Display
Backlight control through brightness buttons works without modification on X

Method 1: Using the kernel driver
Step 1ː Configure and compile kernel

Step 2: The gentoo package is required.

bluetooth
working under command line (net-wireless/bluez-tools) could pair to an android phone https://wiki.archlinux.org/index.php/bluetooth