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Technical white paper | HP ZBook 15 G2 Mobile Workstation
Hybrid Graphics
By leveraging display outputs from both the integrated Intel® GPU and the discrete GPU, HP ZBook 15 G2 is able to
support a large number of independent displays. The usage of both integrated Intel GPU and the discrete GPU is available
when Hybrid Graphics is enabled.
Hybrid Graphics is always enabled by default on the HP Zbook 15 G2. When Hybrid Graphics is disabled (may be disabled
through BIOS Setup), the display outputs from the integrated Intel GPU are not available for use. As a result of this, the
maximum number of independent displays supported is reduced to four on these models with NVIDIA® graphics. With
AMD graphics, the maximum number of independent displays is ve when Hybrid Graphics is disabled—however, two of
the external displays must be of DisplayPort type.
Special note on Hybrid Graphics during Pre-OS environment
With Hybrid Graphics, HP is using displays that may be connected to either one or both GPUs. Because the standard
industry support for Pre-OS session involves only one GPU, there is a standard industry limitation where only displays
connected to the integrated GPU may be used during PreOS. As such, display(s) attached to the discrete GPU are
not viewable during Pre-OS. For example, if users boot with the panel closed and an external display attached to a
DisplayPort connector driven by the discrete GPU, that display cannot show any image during Pre-OS session such as
during POST, when in BIOS setup, when running early diagnosis, when using Power-On Password, and so on.
HP has implemented special support to resolve this limitation. With Hybrid Graphics, any one display, whether it is
connected to the integrated or discrete GPU, is usable (viewable) during Pre-OS. This feature is called “Hybrid Graphics
Enhanced Display” and is by default enabled in BIOS. Users may disable this feature to only support Pre-OS session with
integrated GPU displays (which is typically limited to the internal Panel and VGA).
Multiple Displays Management
On the HP ZBook 15 G2, users may also use NVIDIA® Control Panel to manage multiple displays. (The screen shot for
NVIDIA® Control panel is listed below).
Tip: A quick way to enable all displays connected (up to the maximum supported) in extended desktop mode is to use
Windows presentation key and choose “Extend” mode. 1) Connect displays; 2) Press Windows logo key + P; 3) Select Extend.
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