Ingo Gerth, as per the forum post of another HP EliteBook 8560w (different card), NVIDIA advised to update the BIOS, and another user advised that updating the driver to 375.66 worked for them: https://devtalk.nvidia.com/default/topic/539462/linux/-nvidia-319-12-brightness-controls-not-working-on-laptop-ubuntu-13-03-/5
Could you please advise on your BIOS version, update to a supported version of Ubuntu, and advise if testing the latest NVIDIA driver for your release works?
Ingo Gerth, as per the forum post of another HP EliteBook 8560w (different card), NVIDIA advised to update the BIOS, and another user advised that updating the driver to 375.66 worked for them: /devtalk. nvidia. com/default/ topic/539462/ linux/- nvidia- 319-12- brightness- controls- not-working- on-laptop- ubuntu- 13-03-/ 5
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Could you please advise on your BIOS version, update to a supported version of Ubuntu, and advise if testing the latest NVIDIA driver for your release works?