Followup on #39 - I have just noticed that the backlight switches on
after few seconds of inactivity (14.04.4 with 4.2 kernel). AFAIK this
wasn't the case with 4.4 kernel (16.04).
I also checked and after opening the laptop lid and waking up, the
backlight is off, just as in 4.4 (at least on my mo
I can partially reproduce this bug on Dell Latitude E6420.
Namely in 16.04 (4.4 kernel) backlight was always on after (re)boot and
screenlock, however waking up (opening laptop) does not switch backlight
on. Moreover I could control the backlight (i.e. switch it off),
contrary to some reports abov
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