They can't just "fix" an issue (even more something like this), if we want this issue to be fixed, we have to post informations so AMD can reproduce it and fix it.
I start:
Specs:
- Windows 10 x64 v1803 (Tested insider builds, also happening) on an SSD.
- AMD R7 1700
- Sapphire AMD RX Vega 64 Nitro+
- Corsair 16 Gb DDR4 2933 Mhz
- Asus PRIME X370 Pro (BIOS 4011)
- 1000W Gold Corsair RM1000 PSU
Monitors
- Asus MG278Q (1440p 144hz Freesync) using DP
- BenQ GL2250 (1080p 60hz) using HDMI
- AOC e2343f2 (1080p 60hz) using HDMI
What i tried:
- Full clean install of Windows on another SSD
- DDU in Safe Mode
- DDU + AMD's Clean Install Utility in Safe mode + Ethernet cable unplugged till the driver was installed to prevent Windows Update to mess with it.
- Disable Freesync (all other Radeon Settings are default / unchanged)
- CSM enabled / disabled
- Secureboot enabled / disabled
When the problem happens
Black screen right after logging in, it doesn't just black screen, the whole PC is also frozen (monitors looses signal), RESET doesn't do anything, long press power button doesn't help either, only way is by pulling out the power cable.
Additionnal observations:
18.2 and earlier works perfectly fine, but once 18.5+ is installed, even after DDU in safe mode and reinstalling an older driver, black screening will still happen, the only way once 18.5 is installed is to reinstall Windows or by not using any video drivers.
18.5+ only works after installed IF the pc isn't rebooted, once it is, black screening will occur.
18.5+ Also have an issue with monitor Pixel format, for some reason my screens are too bright like it's using limited RGB pixel format (but it is YCBCR 4:4:4) what i have to do to fix it is to switch from YCBCR 4:4:4 to something else, then back to YCBCR 4:4:4, everytime the system restarts. 18.2 isn't affected by this either.
18.6.1 is also causing black screens.
My system is perfectly stable, no problems during extended stress testing.
