I think I understand the error. Sorry for my English. Ubuntu 18.04. After installing nvidia drivers, nouveau modules are added to the modprobe blacklist. The path /sys/kernel/debug/vgaswitcheroo/switch disappears. To turn off the nvidia graphics card, prime-select creates a symlink in /etc/systemd. It tries to write /sys/kernel/debug/vgaswitcheroo/switch, but there is no such path and nothing happens.
-- 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/1757180 Title: nvidia-prime can't switch off the discrete GPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1757180/+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
