Kiwi Linux
nvidia-prime package

  1. Bug #1765363
  2. Comment #65

Comment 65 for bug 1765363

Revision history for this message
Alexey_C (alexey-acv) wrote :

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.