Ubuntu
nvidia-graphics-drivers-340 package

  1. Bug #1389215
  2. Comment #47

Comment 47 for bug 1389215

Revision history for this message
Hans Deragon (deragon) wrote :

I tried acpi_backlight=vendor on grub to novail. It even stopped working on the TTY. Putting grub as it was restored the functionality back in the TTY. Under X11, the problem persists.