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I have an optimus laptop but can set it to use the dgpu only in bios.
However I would like the power saving features of using bumblebee (or prime if that'd work).
The problem is that if use bumblebee I lose the ability to control the screen backlight.
The nouveau driver does not work for setting brightness either so Prime is out of the question presumably.
I have tried all the options on the wiki but I think that the intel card just isn't in control of the backlight, thus none of them work.
I have the kernel parameter acpi_osi="!Windows 2015" set because of the lspci hangup issue that comes with bbswitch
(see NVIDIA Optimus#Lockup issue (lspci hangs)),
And if I start in discrete mode with the nvidia driver things work fine (if power hungry)
using kernel parameters acpi_backlight=none gives me no sys/class/backlight folders, but the brightness controls still work (inside de) and doing so also gets rid of flicker when changing brightness.
Can I still make bumblebee work although only the nvidia card can set brightness?
Edit: I have settled for using the dgpu with nvidia drivers only for the time being.
This is suboptimal but the most usable of my options thus far.
Rather lose a lot of time on battery then my eye sight with the screen on full blast.
Last edited by DeadLink404 (2018-04-01 20:50:59)
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