I'm having black screen problems with my 4GB card flashed to 8GB when GPU is on idle state (300mhz core, 300mhz memory). It usually happens browsing web. Never has happened when I am gaming. Once after messing with power states GPU core locked into max mhz and seemed to be stable (memory did downclock to 300mhz though). I wasn't able to recreate that lock after reboot. I am using 4K@60 resolution with HDMI if it matters. Now I'm testing if black screens occur on lower resolutions.
Occurs on lower resolutions too. I'm using crossfire.
Is there any way to overclock the idle state by a bit or force higher clocks for possible temporary fix? Wattman controls P1-P7 states, but NOT P0 state so it underclocks to 300mhz even though I set P1-P7 states to identical clock and voltage. I have also tried setting MSI Afterburner "force constant voltage" but it doesn't seem to work and Asus GPU Tweak II doesn't even have an option for "force 3d clocks" with RX 480.
I guess it could be fixed permanently with custom bios but not yet flashable?
This utility forces max clocks! It should fix this temporarily. Power consumption will be a bit high until there is a better solution though.Edited by Jurbeli - 8/13/16 at 3:30pm