After seeing Alex's post, I tried installing 410.104-0ubuntu0~18.10.1 from ppa:graphics-drivers. Using 4.18.0-16-generic kernel.
I find that when I use Intel profile, powertop reports the nvidia card as 0% active, and the setting in Tunables shows up as Good. However, /proc/acpi/bbswitch reports as 0000:01:00.0 ON, and the *fans* are spinning. Turning the graphics card OFF with bbswitch, the fans stop spinning. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-settings in Ubuntu. https://bugs.launchpad.net/bugs/1778011 Title: SRU: PRIME Power Saving mode draws too much power To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1778011/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp