The Lenovo Yoga 2 Pro utilizes a Samsung LCD panel with a Pentile Red-Green-Blue-White (RGBW) pixel matrix, as opposed to a standard Red-Green-Blue (RGB) matrix on more conventional LCD panels. The Pentile matrix uses a modified physical layout of the pixels, taking advantage of white sub-pixels to deliver a brighter display at lower power consumption levels
A drawback of this modified matrix is a lower color luminance than a standard RGB matrix. This is most noticeable when viewing yellows. Some yellows may appear greenish in hue.
An updated system BIOS has been released that, in conjunction with a new version of Lenovo Energy Manager, adjusts pixel and backlight intensity to optimize yellow performance, regardless of the selected power mode.
Both updates must be installed for the changes to take effect. It is recommended the BIOS update be installed prior to installing the updated Energy Manager.
Installation notes: Based on internal testing and customer feedback in the forum, it is possible in some cases that the system may not restart automatically after the BIOS flash completes. The screen will be black and the keyboard backlight will be on. If this occurs, press and hold the power button until the system shuts down, then press and release to restart. The energery manager must be updated for the yellow color correction, so there may be a pause on boot up, or when returning from sleep before the colors update.
On Yoga 2 Pro, this can be mitigated by switching to Performance Mode in Lenovo Energy Manager. To do this:
1) Swipe from the right edge of the display or touchpad to fly out the Charms bar
2) In the Search field, type “energy” then select “Energy Manager from the results
3) In Energy Manager, click the rocket icon to enable Performance mode (Note: if this is the first time you have launched Energy Manager, swipe left through the introductory screens then tap OK to see the screen below)
Note: Ensure you have at least this version or above (should there is any)