Ubuntu
linux package

  1. Bug #1852071
  2. Comment #19

Comment 19 for bug 1852071

Revision history for this message
Jarkko Toivonen (jttoivon) wrote :

Hi Marcin,

Try to perform a power reset: https://support.hp.com/ph-en/document/c01684768
That is: turn the computer off, remove all cables, press and hold down
the power button for 15 seconds. Turn the computer on and reconnect
the cables. The brightness buttons should start working.

Worked for me with the exactly same computer with Ubuntu 19.10.