Hi. I have this problem on Lenovo S540 and Ubuntu 18.04LTS After reboot bbswitch is ON
But i look this situation: file /etc/systemd/system/nvidia-prime-boot-service contains call /usr/local/bin/turnoff_nvidia_at_boot, where last command change bbswitch to OFF #!/bin/sh rmmod nouveau rmmod nvidia_drm rmmod nvidia_modeset rmmod nvidia_uvm rmmod nvidia modprobe bbswitch echo "OFF" > /proc/acpi/bbswitch Bingo? No... After automatically run nvidia-prime-boot-service as a service, switch stay is ON and NVidia powered. Okay, i run nvidia-prime-boot manually... $ sudo tlp-stat -b | grep power_now /sys/class/power_supply/BAT0/power_now = 18832 [mW] $ sudo systemctl start nvidia-prime-boot $ sudo tlp-stat -b | grep power_now /sys/class/power_supply/BAT0/power_now = 5041 [mW] Nvidia power is OFF. Bingo is here? No.. It's unpleasant when to have everything, but it's not working properly. I guess we can run bbswitch OFF later and it will work. So far, there's only hope for cron. -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
