If I run lsmod...
Code:
--------------------
clk_hifiberry_dacpro 16384 1
rpi_ft5406 16384 0
fixed 16384 3
rpi_backlight 16384 0
squashfs 45056 76
sch_fq_codel 20480 3
--------------------
so the backlight is there
Code:
--------------------
tc@Bathroom-pCP:/proc$ modinfo rpi_backlight
filename:
/lib/modules/4.19.122-pcpCore_v7/kernel.tclocal/drivers/video/backlight/rpi_backlight.ko
license: GPL
description: Raspberry Pi mailbox based Backlight Driver
author: Gordon Hollingworth <[email protected]>
srcversion: F28B14D84DF7AF92BB5A4D7
alias: of:N*T*Craspberrypi,rpi-backlightC*
alias: of:N*T*Craspberrypi,rpi-backlight
depends:
intree: Y
name: rpi_backlight
vermagic: 4.19.122-pcpCore_v7 SMP mod_unload modversions ARMv7 p2v8
--------------------
and guess what
Code:
--------------------
sudo rmmod rpi_backlight
--------------------
removes the module and the dimming works! Until I power off. The screen
then drops to the off level but the power on button & touchscreen no
longer work.
------------------------------------------------------------------------
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