I updated nVidia proprietary driver to version 185.18.36 and now backlight brightness control works. I suppose that the new driver listens backlight ACPI events properly.
Setup: Ubuntu Jaunty HP 8530w nVidia Quadro FX 770M -- No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq, Samsung, Zepto et al.) with Nvidia Geforce8/Geforce9/Quadro series graphics https://bugs.launchpad.net/bugs/95444 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

