I have recently built a new PC, the main specifications are as follows:
- Z390 motherboard.
- Intel 9900k processor, OC at 5 Ghz.
- GPU RTX 2080 Ti, stock settings.
- 64 GB of DDR4 3200 RAM.
- 750W power supply.
- Two monitors, both 27 "4k, one of them supports HDR, both connected to the GPU using a 1.2 DP cable.
- A clean Windows 10 Pro (1903) installed, with all the latest patches installed.
- Installed Geforce WHQL 431.60 driver, using all default settings.
In most cases, the system works well and smoothly. But there seems to be a problem with the GPU / driver / monitor settings that I could not understand.
The symptom is that a black screen suddenly appears on both screens, and then the system seems to have a hard time tipping back and forcing between the actual image and the black screen for 5 to 8 seconds. After that, either it will recover itself without any error message or warning on the screen, or it will completely quit, causing the two monitors to shut down by themselves as no signal is available. entry was not detected. In this last scenario, the PC still seems to be running because the sound is still playing. But it is not possible to restore the display of the image unless you make a sudden restart.
The behavior seems a little random for me until I finally find a reliable way to reproduce the problem:
- Enable the "Play HDR Games or Applications" option in the main monitor window settings (the one that supports HDR technology).
- Open any window or task on the main monitor (browse window, browser window, empty Word file or game)
- Open Chrome on the other monitor, go to Youtube and watch any video.
Now, as soon as I put the video playback in full window mode. the problem occurs with in the next 3 seconds guaranteed. In the Windows event log, an entry says "nvlddmkm has stopped responding and has been successfully recovered."
That being said, I googled it and found a workaround for that specific problem. The fix is to disable hardware acceleration in Chrome. I have tried this and it works. But that did not solve the problem of the black screen completely, but simply eliminated one way of causing this problem.
Another interesting observation is once I've disabled the HDR in Windows for my main monitor, while still maintaining hardware acceleration in Chrome, and then testing again in the same scenario, the problem can still occur produce. But that does not happen all the time. More likely under a random base, 4 times out of 10, at one time or another. But once this happens once, it will happen every time after that, until the PC can not recover on its own and perform a brutal reboot.
The only way that seems to completely solve the problem (at least I have not experienced any failure so far), is to get rid of a monitor .. no matter which one. If only one monitor is connected to the GPU (via any DP port), the problem seems to never occur. But subconsciously, I can not live with the fact that a RTX 2080 Ti is unable to power 2 monitors 4k.
FYI: I have tried several DP cables, that does not help me. And I can not use HDMI cable because some can only get a refresh rate of 30hz on 4k if I connect them with an HDMI cable.
FYI 2: I tried to go back to an earlier version of the driver, it does not help.
Does anyone know what could be the problem here? It has been bothering me for days and I did not even know what part had gone wrong, let alone fix it. Any help / comments / suggestions will be very appreciated!