[Bug 112014] i915: intel_dp_aux_backlight max_brightness set to incorrect value on Thinkpad P1 Gen2 AMOLED

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112014

--- Comment #9 from scachemaille <scachemaille at gmail.com> ---
(In reply to Lyude Paul from comment #8)
> (In reply to scachemaille from comment #6)
> > (In reply to Jani Nikula from comment #4)
> > > Does this help?
> > > 
> > > http://patchwork.freedesktop.org/patch/msgid/20190618062628.133783-1-
> > > furquan at google.com
> > 
> > just to be clear.. 
> > I 'm not used about the patch review.. and I'm not sure the version of the
> > patch I tested.. I saw later there was different version.
> > 
> > I tested the patch directly accessible with the link above.
> > 
> > But I don't think it makes much difference.
> 
> Hi! I posted the fixes I was talking about here:
> 
> https://patchwork.freedesktop.org/series/69914/
> 
> Would you mind testing them and letting me know if this fixes your issues?

I will test as soon as possible.
I just have a question: 
There is the patch: "Force DPCD backlight mode on X1 Extreme 2nd Gen 4K AMOLED
panel" and "Auto detect DPCD backlight support by default" 

Does that mean if should work without the need to set the
"enable_dpcd_backlight"  in the module option. it should be automatic?

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