Hello, I have just noticed that depending on how you change the display brightness on my ThinkPad, values may differ wether I query using wsconsctl(8) and xbacklight(1).
Here's what I have observed: # doas wsconsctl display.brightness ; xbacklight -get display.brightness=25.11% 25.000000 # xbacklight -set 50 # doas wsconsctl display.brightness ; xbacklight -get display.brightness=50.00% 50.000000 # doas wsconsctl display.brightness=75 display.brightness -> 75.11% # doas wsconsctl display.brightness ; xbacklight -get display.brightness=75.11% 50.000000 I also tried using the (ThinkPad T460s) keyboard brightness buttons and check which software show the proper value. From the previous step, hit the button until I got to the max brightness I could get, I end up with: # doas wsconsctl display.brightness ; xbacklight -get display.brightness=100.00% 50.000000 Then as little light as I could get: # doas wsconsctl display.brightness ; xbacklight -get display.brightness=2.69% 50.000000 In case it matters, this is "7.0 GENERIC.MP#335 amd64" with "Intel HD Graphics 520" attached as inteldrm0 using "modeset(0): glamor X acceleration enabled on Mesa Intel(R) HD Graphics 520 (SKL GT2)" Regards, Joel C.