Hello,
I've tried new 3.13 kernel on my Lenovo T440p (20AN0037RT), and am getting
message about unsupported brightness interface. Brightness changing works
without any problems really (I use new video.use_native_backlight option,
but it works even without it, though with some caveats), but the error
message asks to drop a email here.
My dmesg and lspci can be got from
https://bugzilla.kernel.org/show_bug.cgi?id=69461
(It is another bug on the same kernel).
Thanks,
Nikolay Amiantov.
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