I tried something this morning, since I was convinced that this problem revolves around Nouveau power management.
I made a backup of prime-select, # cp /usr/bin/prime-select /usr/bin/prime-select.orig and replaced the parameter that disables Nouveau power management (as per https://nouveau.freedesktop.org/wiki/KernelModuleParameters/). # sed -i "s/boot_params\['nouveau.runpm'\] = '0'/boot_params\['nouveau.runpm'\] = '-1'/" /usr/bin/prime-select After restarting on the integrated GPU, I launched Powertop (sudo powertop) in a terminal to measure the power consumption at idle, and it was around 6W. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1765363 Title: prime-select intel is not powering off the nvidia card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1765363/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
