fantom display. Using predator 300 SE PT3.Brightness is blocked when switched to discrete video card

Zhepalo
Zhepalo Member Posts: 4 New User
edited February 11 in Predator Laptops

Hi, i have a problem with the displays, i have a predator laptop which is using only it's own display. When switching the display operation to a discrete video card, a second inactive display appears (from the integrated graphics) and the ability to change the screen brightness is blocked. I have already rebooted and deleted all the drivers and in the device manager I also deleted both the phantom display and the integrated graphics itself

[Edited the thread to add model number to the title and to add issue detail]

Answers

  • JackE
    JackE ACE Posts: 44,478 Trailblazer

    Post a screenshot of Device Manager as it opens. Don't manually expand any Device Manager folders.

    Jack E/NJ

  • Zhepalo
    Zhepalo Member Posts: 4 New User

    sure. 😉:\;|

  • JackE
    JackE ACE Posts: 44,478 Trailblazer

    a second inactive display appears (from the integrated graphics) and the ability to change the screen brightness is blocked

    What happens to the greyed out inactive display when you simultaneously disable, not uninstall, the integrated GPU in Device Manager?

    Jack E/NJ

  • Zhepalo
    Zhepalo Member Posts: 4 New User

    If I turn off the integrated graphics, the phantom display disappears, but after a reboot it appears again connected to the basic Microsoft video adapter

  • JackE
    JackE ACE Posts: 44,478 Trailblazer

    > >the ability to change the screen brightness is blocked.> > f I turn off the integrated graphics, the phantom display disappears, but after a reboot it appears again connected to the basic Microsoft
    video adapter> >

    Yes, of course, that's normal. Because the BIOS initializes the integrated GPU only, not the discrete GPU. There is no user available MUX switch in most laptop series BIOS. What is your full predator laptop model number? For example, PH315-54?

    But your original complaint was that the brightness was blocked. So is the brightness still blocked if you turn off the integrated GPU in Device Manager?

    Jack E/NJ

  • Zhepalo
    Zhepalo Member Posts: 4 New User

    full model number is Predator Triton 300 SE PT316-51s.

    If we are talking about blocking the brightness change, then yes, when you turn off the integrated graphics in the device manager, the brightness change is still blocked. I noticed that it is blocked when the laptop is running on a discrete video card

  • JackE
    JackE ACE Posts: 44,478 Trailblazer

    > > I noticed that it is blocked when the laptop is running on a discrete video card > >

    This suggests dGPU brightness control is in the nVidia dGPU utility. If the nVidia utility is not installed, it can be downloaded specific to your nVidia dGPU model at this link.

    Jack E/NJ