[Bug 111202] [Regression]: intel_backlight fails to change eDP1 brightness on Dell Precision 5540 (Coffeelake)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111202

--- Comment #4 from Kai-Heng Feng <kai.heng.feng at canonical.com> ---
I saw [Regression] on the title. If it's a regression please perform a kernel
bisection.

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