no hw.acpi.video.lcd0 with graphics/drm-510-kmod

From: Pete Wright <pete_at_nomadlogic.org>
Date: Sun, 22 May 2022 16:08:12 UTC
hello,
i have a lenovo P43s laptop running current.  i've noticed that since 
graphics/drm-510-kmod became available hw.acpi.video.lcd0 ceases to 
exist (which makes it impossible to adjust screen brightness).  i've 
installed graphics/drm-54-kmod and things work as expected.  previously 
i was running drm-devel-kmod without issues, so i think it's probably an 
issue with the 5.10 driver?

i can file a bug report for this (or just test out patches here if 
that's easier), but wanted to see if anyone here had observed this on 
other laptops first.

cheers,
-pete

-- 
Pete Wright
pete@nomadlogic.org
@nomadlogicLA