XPS 7590 can not adjust bright by function key, fixed

[ligang1841]

I have a DELL XPS 7590 oled screen, use Nvidia 1650 graphic card. and running OS Ubuntu 18.04. Following install, everything is ok but can not adjust brightness by function key (small-sun key and big-sun key),

I changed one line in icc-brightness file in line about 20: BACKLIGHT_PATH = '/sys/devices/platform/dell-laptop/backlight/dell_backlight'

And after re-login, the function key is running.

It looks DELL OLED screen laptop maybe have this problem.

Your prject is prefect! Thank you!

[salperinlea]

Hi, Same laptop and same issue, your fix unfortunately does not solve the problem at all for me.

[pdegrazia]

same XPS laptop, worked perfectly for me! thanks!

Although I have noticed laptop is quite slower to load items on the sidebar. Guess I'd rather live with that than burning my eyes

Additional feedback:

after two reboots, this problem went away