Ubuntu
linux package

  1. Bug #1152544
  2. Comment #14

Comment 14 for bug 1152544

Revision history for this message
Alex Hung (alexhung) wrote :

I checked BIOS 8.10 (current version), and the ACPI device DD02 has _BCL/_BCM/_BQC methods unlike the BIOS that fixed it in https://bugs.launchpad.net/stella/hwe-stella/+bug/1023760/comments/13.

If the ACPI device LCD0 is used (ex. calling its _BCM), the brightness will change accordingly. It seems newer BIOS from HP removed the original fix.

I am not certain new BIOS update for this bug is possible since it is from 2012...