Custom Resolution Utility (CRU)

[czesioG]

Hi,
I'm struggling with my HP laptop with LG0490 eDP screen.
The screen was taken from DELL "donor" works ok with native 1920x1080 60.020 hz 6bits color but only with basic Microsoft display driver.
Laptop uses A10 APU and after installing proper adrenaline driver, laptop screen goes blank with backlit only. External monitor works OK.
I tried to override EDID with CRU copying detailed display resolution to extension block using all possible types and seems I succeeded using DisplayID 2.0. But apparently I decided to mess with Adrenaline (it is HP 655 ProBook so not for gaming anyway) to reinstall it with minimal settings and after reinstallation it does not work. I did DDU/AMD cleaning +reset-all.exe +creating EXE (I know it is for Intel but tried anyway) = all voodoo stuff including reinstalling driver via windows update + all above combinations. The strange thing is sometimes I'm able to make it work just using restart.exe then screen is OK but then disappears. Once it even survived next reboot but it is random. It is visible panel-driver issue plus AFAIK Dell was messing with EDID in panels made for them by LG/Phillips but anyway I hoped I could override it with CRU.
Can sb. help me understand what can be the issue apart from broken panel? :-(
It is IPS, 6bit color does not matter for me as it will be used for coding mainly.