I confirm that 'xbacklight -set 60' works (as user, no root required), in both desktop sessions: ubuntu and plasma. However, the Fn key + arrow only works on plasma.
Being on ubuntu session, inside the directory '/sys/class/backlight' there is nothing, yet xbacklight works. So it's almost sure a gnome/wayland whatever issue. The graphics card is a nvidia 1060 on a gaming notebook, which you can switch to IGPU instead of DGPU on the BIOS but you need to reboot, doesn't have "optimus" or "on-the-fly" switching. I'll answer here as well: https://bugzilla.gnome.org/show_bug.cgi?id=688052 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/1720438 Title: brightness control broken nvidia Status in gnome-power: Confirmed Status in gnome-power-manager package in Ubuntu: Confirmed Status in gnome-shell package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Status in nvidia-graphics-drivers-384 package in Ubuntu: Confirmed Bug description: Ubuntu 17.10 beta 2 Nvidia 310M, 340.x official driver installed with Additional Drivers program The brightness control built into the laptop (Dell Vostro 3300) isn't changing the brightness. Normally I can use Fn + Up/Down arrow keys to change the brightness. The brightness control works fine in Ubuntu 16.04 with the same driver series. I don't know if this is a GNOME 3.26 bug but it's likely as I'm having the exact same problem with Fedora 26 on this laptop. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-power/+bug/1720438/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
