Since a few days, I got a HP ENVY 15-dr0350nd. It has a gorgeous 4k screen and NVIDIA® GeForce® MX250 video. Pretty much everything works well, apart from the fact that so far, I did not find any way to set brightness, except with xrandr. It works neither from keys (although it shows the changing slider), nor from energy settings.
I'd love to see that this is a dupe of an existing question, however, despite the fact that I tried I believe all options that were mentioned inside and outside AU:
- running both nouveau and nvidia drivers
- running the very latest 430 nvidia driver
- running the latest 5.2 kernel
- adding the boot parameters
acpi_backlight=video, which were mentioned in several posts and/or blogs.
- tried controlling brightness with
- edited the file
sudo echo <number> > /sys/class/backlight/intel_backlight/brightness, which did make the slider in energy settings move, but not the real brightness.
So far nothing gave a sign of live to setting brightness on this otherwise gorgeous laptop. If nothing else is possible, I'll control brightness with xrandr, but would love to see it work the way it should.
Did anyone find a fix or workaround?