Comment 15 for bug 1765363

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Alain Rouet (alain-rouet) wrote :

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.