[eoas74]

* No, there's no other hoops to jump through

* According to the device tree README, adding "dtoverlay=rpi-backlight" to config.txt should enable backlight driver support.

Thanks for pointing that out (rtfm error ;-) ), but still no dice, even with a build from last week:

Code:

OpenELEC:~ # uname -a
Linux OpenELEC 4.4.2 #1 SMP Wed Feb 24 21:11:56 GMT 2016 armv7l GNU/Linux
OpenELEC:~ # vcdbg log msg 2>&1 | grep backlight
002147.845: Loaded overlay 'rpi-backlight'
002215.550: Loaded overlay 'rpi-backlight'
OpenELEC:~ # find / -name "*backlight*" -print
/flash/overlays/rpi-backlight-overlay.dtb
/sys/bus/platform/devices/rpi_backlight
/sys/devices/platform/rpi_backlight
/sys/firmware/devicetree/base/rpi_backlight
/usr/share/bootloader/overlays/rpi-backlight-overlay.dtb
OpenELEC:~ # ls /sys/class/
bcm2708_vcio      ieee80211         misc              thermal
bcm2835-gpiomem   input             mmc_host          tty
bdi               iscsi_connection  net               vc
block             iscsi_endpoint    power_supply      vc-cma
bsg               iscsi_host        rtc               vc-mem
dma               iscsi_iface       scsi_device       vc-sm
gpio              iscsi_session     scsi_disk         vchiq
graphics          iscsi_transport   scsi_host         vtconsole
hidraw            leds              sound             watchdog
hwmon             mdio_bus          spi_master
i2c-dev           mem               spidev

Still no /sys/class/backlight I'm afraid. I've even tried to comment out the iqaudio-dacplus dtoverlay in case there was some conflict between them, but that didn't help either. What am I missing?

It shouldn't be a problem that I originally flashed the sd-card with the IQAudio provided http://iqaudio.com/downloads/5_OpenELEC-...Qaudio.zip and have been upgrading it to Milhouse's builds subsequently, should it?