[Bug 97486] Backlight does not change when adjust it higher than 50% after S3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97486

--- Comment #9 from AceLan Kao <acelan at gmail.com> ---
I tried to increase the value of reg 0xc8254 after S3, it seems help.
The display can become brighter after the brightness value be adjusted above
50%, and after set the reg value up to 0x05f00000, the brightness variation can
be seen while changing the brightness value from 0% to 100%

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