APPLIED/Cmnt: [PATCH 0/4][SRU][Unstable] Intel Gen 9 brightness cannot be controlled

Andrea Righi andrea.righi at
Fri Mar 20 09:07:33 UTC 2020

On Tue, Mar 10, 2020 at 11:56:28AM +0800, AceLan Kao wrote:
> BugLink:
> [Impact]
> After Ubuntu-5.4.0-9.12 which introduce DPCD backlight patches, the
> backlight control on some platforms fail to work.
> It seems using OUI string to map the panels which support DPCD
> backlight doesn't work well, it mis-mapped those panel that doesn't
> support DPCD backlight, and breaks the backlight control.
> [Fix]
> The author of the origin DPCD backlight patches recently provides a
> DP quirks based on EDID identification.
> [Fix]
> Verified on the machine with DPCD backlight and also on the machine
> which has regression with the OUI quirks, both of them work now.
> [Regression Potential]
> Low, it introduce a new quirks to list the panels which support DPCD
> backlight.

This patch set has been applied to linux-next, so I have removed
"UBUNTU: SAUCE" from the subject and added the sha1's from linux-next.

And then applied to unstable, thanks!


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