@Alberto I'm afraid I have to add to the pile of users reporting issues here. Kernel 4.20.14 with 418.43 drivers. Ubuntu 18.04.2 LTS, on an X1 Extreme.
Using both GDM3 and lightdm, "prime-switch intel" doesn't seem to power off the nvidia GPU. power seems to go between 25-35W on battery. Using powertop to set the Nvidia GPU to `Good` doesn't seem to help (100% usage in Device stats). Attached are gpu-manager.log and gpu-manager-switch.log (while in prime- select intel mode). I'm not using bbswitch. I've rebooted a few times while in intel mode to see if that would take. No die. Also including output of apt-list --installed | grep nvidia: libnvidia-cfg1-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-common-418/bionic,bionic,now 418.43-0ubuntu0~18.04.1 all [installed,automatic] libnvidia-compute-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-decode-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-encode-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-fbc1-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-gl-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] libnvidia-ifr1-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] nvidia-compute-utils-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] nvidia-dkms-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] nvidia-driver-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed] nvidia-kernel-common-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] nvidia-kernel-source-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] nvidia-prime/bionic-updates,bionic-updates,now 0.8.8.2 all [installed] nvidia-settings/bionic,now 418.43-0ubuntu0~gpu18.04.1 amd64 [installed,automatic] nvidia-utils-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] xserver-xorg-video-nvidia-418/bionic,now 418.43-0ubuntu0~18.04.1 amd64 [installed,automatic] I'm fairly new to Linux, but if there's any additional information I can provide, I'd be glad to assist. ** Attachment added: "gpu-manager logs." https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1778011/+attachment/5244873/+files/gpu-manager-logs.tar.gz -- 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