[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 #4 from Alex Hung <alex.hung at canonical.com> ---
Created attachment 126047
  --> https://bugs.freedesktop.org/attachment.cgi?id=126047&action=edit
dmesg

dmesg with the following:
1. kernel parameter with drm.debug=0x6
2. boot, suspend and resume
3. brightness by hotkeys from max to min, and from min to max

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