[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] oneNight1:
Hi, I am getting massive black crush with this CFW (and I was before on the original 829 fw).

To expand on that, go here: www.lagom.nl/lcd-test/black.php

You should be able to see all of the squares, 1 - 255

However for me, at highest, retina burning brightness, I can only see down to 7 or so and at a comfortable brightness, only 11 or 12. At lowest brightness I can only see as low as 25 or 20!

You posted in your changelog that you have done something to

so i get the impression that you have access to the part of the code that would allow for tweaking the screen colour calibration?

This is with the screen set to Natural like it should be (the other LE ECO, Vivid etc modes are way over saturated and you actually get colour crush), and even in the other modes it is just like this too.

Because there are these colour modes, i think there must be a way to fix this somehow?

It seems like LE ECO is doing something to mess up the black level and crush all the blacks to make the screen look all contrasty deliberately.

It would be good if others could visit the same site on their phones to see what level they can view down to.

In fact would it be helpful for me to make a topic about this to get a range of Le Max 2 owners to check their own displays? I just don't know which forum this would be most appropriate to post it in - i asked about it in the question forum a while ago but I don't think many people really look at that so it probably isn't a good idea to post there for a survey.

I'm guessing the gamma has issues too but as i cannot easily view the gamma calibration image on that same site at 1:1 on a phone, it won't work correctly. I guess i would need some kind of colorimeter and calibration software to properly do that anyway?

One thing i did notice was that on the stock 829 FW, when you first turn the phone on, it DOESN'T have the issue. However when the phone first sleeps it then changes back to the colour mode with the black crush issue (so if it times out to standby or you press the power button etc then you get the problem back).

To me, that seems like the phone is only starting the code the runs the black crush on the first lock screen / standby opportunity.

Strangely, this doesn't happen on your CFW but does on the stock 829 FW - I don't know if it happens with any other other indian or chinese FWs because I haven't tried them.

So I am hoping there is something you can do to turn off the Le Eco software implemented blackcrush and to help calibrate the screen?

It would also be good if KCAL support could be added to the CFW for some basic form of screen calibration.

However it still feels to me like the LEECO software is messing with the colours / gamma somehow and it would probably be best to disable this first before any colour calibration like KCAL is added, as applying one to try and fix the other might degrade the screen quality and result in banding etc.

Or if there is a way to add manual parameters inside the native colour mode options then that might be a good way to do it too.

Of course, different parameters for different set (fixed) brightness levels would be ideal as putting the brightness on lowest for example really needs a more extreme set of parameters to remove the black crush than say mid / peak brightness.

I hope i have explained well enough, if there is any way i can help just ask. This is quite a big issue with the phone as it really messes up the screen and i find it surprising that more people aren't talking about it which is why i wonder if it is "pot luck" on how bad your screen is. I do think it is probably mostly a software issue though, or at least something that could be calibrated / fixed through software.

Sorry for the long post...

Thanks!