By chance I have come today over these two pieces of information:
* https://www.ddcutil.com/faq/
* which links to:
https://lists.freedesktop.org/archives/intel-gfx/2017-May/127426.html
I don't use ddcutil, but I do have the i915 kernel module, which appears
to be at fault.
-quintus
--
Package: ddcci-dkms
Version: 0.3.2-1
Severity: normal
Dear Maintainer,
I was trying to control my monitor's backlight with the DDC/CI interface
via the ddcci kernel module provided in the ddcci-dkms package. The
monitor, a Dell P2219H, does support DDC/CI according to the
manufacturer's
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