Solved: Elite x2 - After Win10 update, adjust of display brightness ... - HP Support Community

Backpanel · ‎11-17-2017

After a recent Windows 10 Pro 64 bit update, the fn + F9/F10 key combination is no longer available and does not work.

I have tried to perform the following steps:

- Ran HP Software Setup Utility and checked updates until the message "No updates are currently available"

- Performed latest Windows Update

- Uninstalled and reinstalled display driver

- Checked Power Options - the slide controls for setting the brightness On battery / Plugged in, are not available

- Checked Power Options - Advanced settings - Enable adaptive brightness, On or Off

No way! The only evidence found is that by cliccking the Battery Icon in the Icon tray (bottom right), the BRIGHTNESS icon is grey and indicates DARKEST if Adaptive Brightness is set to ON. By setting Adaptive Brightness to OFF, then the BRIGHTNESS icon is still grey, but indicates 0%, no adjust possible!

Currently the display brightness is set to 100% (both on battery or Plugged-in) and I have problems when the room is dark (display too bright) and additionally, when not plugged-in, the battery will be drained in a short time.

Does anyone have a suggestion? Thanks a lot!

Backpanel · ‎11-17-2017

Just found the issue.

In the DEVICE MANAGER, under Monitors, there was a PnP Monitor device with the Exclamation Point (!) along with the warning Driver not Signed. The monitor was created by TeamViewer.

First I tried to update, but the driver was already the newest. Then deleted the monitor but still the same message.

Then deleted with the additional option "delete from PC", then re-scan drivers and update ... IT WORKED!

Now the Fn+F9-F10 are working as usual.

I hope this can be of help to other people.

View solution in original post

Backpanel · ‎11-17-2017

Just found the issue.

In the DEVICE MANAGER, under Monitors, there was a PnP Monitor device with the Exclamation Point (!) along with the warning Driver not Signed. The monitor was created by TeamViewer.

First I tried to update, but the driver was already the newest. Then deleted the monitor but still the same message.

Then deleted with the additional option "delete from PC", then re-scan drivers and update ... IT WORKED!

Now the Fn+F9-F10 are working as usual.

I hope this can be of help to other people.

cwmws_Andy · ‎12-07-2017

Thanks! was having identical issue with my EliteBook 8770w (also Windows 10)

Not sure if it was right after installing the TeamViewer Monitor Driver, or if it happened after a Win10 update. But regardless, uninstalling the Generic PNP Driver fixed it immediately.

Elite x2 - After Win10 update, adjust of display brightness is no longer available

Create an account on the HP Community to personalize your profile and ask a question