[Hdmi 1280 x 800 display]

The bad background color is the pll value but not only that (for me atleast). There is some other problem because i use pll 334 and the picture is perfect but often if i turn off the display and turn it on again it gets this color problem as if the pll is wrong. This happens when i boot the board also. its like 50/50 chance to get this problem and cycling the display on and off fixes it for me but is really annoying. Since i use a laptop panel and a universal controller board i think it may be the lcd controller but it does not happen on other resolutions. Anyway since i got another display i haven't looked into this any further.

 

Hope its only pll value for you.

[Hdmi 1280 x 800 display]

On 1/10/2017 at 2:21 PM, mariuszb said:

 

I tested already 1280x800 resolution and works properly with my previous calculations.

{HDMI1280x800_60, 0,83910000, 0, 1280, 800, 1656, 32, 32, 312, 841, 17, 16, 8, 1, 1, 0, 0, 0},
{{Video ID  ,  4 ,   0,  96,     5,   8,     3,  1,   16,  0, 1,   0,  120,    64,    56, 32,  41,  1,  1 }}, 
PLL_VIDEO 336

 

I would like to confirm that the above video settings work for me too on a samsung laptop pannel 1280x800 using a tsum v29 universal lcd controller, BUT i had to set PLL_VIDEO=330 to get correct colors. Using 336 or from 332 to 338 results in blurry mostly green screen. PLL 330 nad 331 worked for me so i havent tested anything else.

 

P.S. :

I tested first option and it works too whithout changing pll using the stated 334.

I made a patch for those that want to try it but dont know how and where to add the modlines. To activate resolution change screen0_output_mode = 38 screen1_output_mode = 38 and pll_video = 334 in script.bin

Or add :

                38|1280x800) # res
                        HDMIMode=38
                        pll_video=334
                        ;;

in /usr/bin/h3disp and use h3disp to set changes.

 

If you want to risc it and trust me you can try my precompiled packages for OrangePi_PC.

https://drive.google.com/drive/folders/0B40z5IEobXstb0g0am9NMHkwWTQ?usp=sharing

 

z-0004-add_1280x800.patch

 

And a big THANK YOU to mariuszb for finding the correct values for this resolution.