[Nouveau] [Bug 100446] Backlight control not working on Pascal / GP106 using nouveau drivers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100446

--- Comment #2 from Carlo Caione <carlo at caione.org> ---
In attachment (tar + xz -9):
- vbios
- mmiotrace
- demmio'd mmiotrace

The trace was taken in pure Xorg with only xterm running and:

echo "XSET50IN" > /sys/kernel/debug/tracing/trace_marker
    && xbacklight -set 50 -steps 1
    && echo "XSET50OUT" > /sys/kernel/debug/tracing/trace_marker
sleep 2
echo "XSET100IN" > /sys/kernel/debug/tracing/trace_marker
    && xbacklight -set 100 -steps 1
    && echo "XSET100OUT" > /sys/kernel/debug/tracing/trace_marker

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