APPLIED[F]/cmt: [PATCH 0/5][SRU][F][OEM-OSP1-B] Intel Gen 9 brightness cannot be controlled

Seth Forshee seth.forshee at canonical.com
Sat Mar 7 14:36:46 UTC 2020


On Wed, Mar 04, 2020 at 02:00:45PM +0800, AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1861521
> 
> [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. 

These new patches are not upstream, so they still need to be marked
SAUCE. And they do not apply cleanly to unstable. Can you please send
patches for unstable as well?

Applied to focal/master-next as sauce patches, thanks!



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