Brightness control for Lenovo X1 Yoga OLED (1st Gen) not working

Hello! I'm hoping to get some help debugging brightness control on my machine. Some pertinent info:

I'm relatively new to linux, so any guidance on how to debug this issue would be appreciated. Thank you!

Comments

More info is probably needed: I assume you're talking about your desktop, right? Not a virtual console? - You reach the latter via:

<ctrl-alt> - F<try a number from 1-7>

You get back to your desktop environment via:

<alt> - F<try a number from 1-7>

If it's a desktop question: what's the output of:

cat /etc/systemd/system/display-manager.service | egrep -i 'desc|bus|cstart'

and

env | egrep -i 'n__desktop|session=|ssion_t'

wpfeiffer ( 2018-10-22 07:22:36 -0600 )edit

Thanks for the response! Sorry for the delay.

Description=GNOME Display Manager
ExecStart=/usr/sbin/gdm
BusName=org.gnome.DisplayManager

and

DESKTOP_SESSION=gnome
XDG_SESSION_TYPE=wayland
GDMSESSION=gnome

Let me know if that's helpful or if there's any other info i can provide! Thanks!

freeridr05 ( 2018-11-11 20:50:06 -0600 )edit

I think the problem is XDG_SESSION_TYPE=wayland

freeridr05 ( 2018-11-17 15:20:52 -0600 )edit