About backlit keyboard settings of HP ENVY x360 Convertible 15-dr1xxx

[samchiu90]

I want to adjust the backlight timeout setting of the keyboard on HP ENVY x360 Convertible15-dr1xxx as currently I only able to change the brightness and turn on the backlight by clinking f5 or fn+f5 manually. The backlight will turn off automatically within a few seconds if I don't touch the keyboard. 
According to https://support.hp.com/in-en/document/c01612362, I can adjust the backlight timeout setting in the Built-in Device Options of BIOS. However, I cannot find the device setting and Built-in Device Options as well as anything related to Backlit keyboard timeout in the BIOS.
Is it impossible for me to adjust the Backlit keyboard timeout of HP ENVY x360 Convertible 15-dr1xxx now in order to keep the backlight turning on?
This is very annoying that the backlight cannot keep turning on.

[Dragon-Fur]

@samchiu90 

This is one of those general documents that mentions that a particular feature might not be supported on your computer but does not offer specifics simply because the document is not written for YOUR computer.

HP Notebook PCs - Using the Backlit Keyboard

Section: The backlight stays on for only a few seconds

In general, and there might be exceptions, business class computers offer the Advanced BIOS options, including (on those models including the backlit keyboard feature) controlling the backlit keyboard timeout in the manner described.

Yes, I understand it is annoying.

No, there is no workaround for the BIOS options.

Yes, it is sad, too.

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