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Monitor sleep/wakeup problem on Radeon R9 390

Question asked by eric2016 on Sep 7, 2016
Latest reply on Jan 19, 2017 by b4ttlecat

I recently upgraded to a Radeon R9 390 (from an R9 280) and have been having trouble with the monitors going to sleep (power save) /waking up. I am running Windows 8.1. Often, but not always, one of these problems will happen:

  • A reoccurring cycle takes place where 1) the monitors go to sleep and the speakers place a USB disconnect sound; 2) one or both of the monitors then wake up, showing a blank blue screen and the speakers play a USB connect sound, 3) the cycle repeats. If this cycles goes on long enough it seems to cause problems in Windows. One day I discovered the PC frozen and after restarting I looked at the system event logger, and found a warning saying that explorer.exe was using about 22GB of virtual memory
  • When I move the mouse to wake up the monitors: Windows detects the monitors as being newly connected. It at first thinks only one monitor is connected and moves all my windows/icons over there, and then detects my second monitor and moves things back around.
  • When I move the mouse to wake up the monitors: Windows only detects one of the monitors and that monitor has an unstable image on it. The screen image is shaking and the problem is only solved by restarting the PC.


When I first replaced the R9 280 with the R9 390, Windows did not recognize the video card and launching the RadeonSettings app (automatically launched during startup) caused Windows to lock up. I had to go into safe mode, do an AMD clean uninstall, and then install the latest Radeon Crimson drivers. This led to the above problems.


I then reinstalled Windows 8.1 and installed Radeon Crimson Edition 16.7.3 -- the install failed (the package that failed was the graphics driver and Windows continued to use Microsoft's basic graphic adapter driver). I then tried installing Crimson Edition 16.8.3 Hotfix and this got things working, but still with the problems I described above. So basically: reinstalling Windows did not help.


Any idea what is going on here? Nothing in my system has changed since replacing the R9 280: same monitors, same system components, etc. I know that the 390 needs more power.... could this be a power supply issue? (I am using an ANTEC 650W power supply, i7 processor, 1 SSD and 3HDs; both monitors are connected via DVI and have built in speakers).


One of the monitor outputs on the R9 280 had actually died, and I sent it in for RMA, so I no longer have it available to test against.