
It looks like PowerDVD is resyncing and that causes the sync to be lost on HDMI2. There was a brief message from PowerDVD 'Switched to SDR'. The monitor is set to output on HDMI2 some reason on one occasion I happened to switch the monitor to HDMI1 just as the display on HDMI2 went blank. I always select play with SDR as I don't have an HDR monitor I also select don't match the refresh rate to the source material (playback at 60Hz looks fine to me)Īttempting to play a second UHD BDMV folder appears to result in a blank display, with PowerDVD apparently hung. The first playback of a UHD BVMV folder works perfectly with PowerDVD 21 Ultra.


OK, I finally resolved this issue after time wasted reinstalling PowerDVD, tracking down possible software conflicts etc.
