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Monitor keeps disconnecting and reconnecting when it is asleep

Question asked by billybob1 on Nov 11, 2018
Latest reply on Nov 29, 2018 by billybob1

I just installed a Sapphire RX 580 8Gb Special Edition, and am using two monitors, a BenQ GL2760 over HDMI, and a HannsG HH251D over DVI-D.

 

The monitors are set to switch off after e.g. 3 minutes in power management, and when they have switched off, the HH251D continually disconnects and reconnects every ~10 seconds, with the disconnect and reconnect sounds.

 

Using EventGhost I am able to capture the events:

System.DeviceRemoved [u'\\\\?\\DISPLAY#HSD2212#5&259e1ade&2&UID778#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']

System.DeviceAttached [u'\\\\?\\DISPLAY#HSD2212#5&259e1ade&2&UID778#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']

System.DeviceRemoved [u'\\\\?\\DISPLAY#HSD2212#5&259e1ade&2&UID778#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']

System.DeviceAttached [u'\\\\?\\DISPLAY#HSD2212#5&259e1ade&2&UID778#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']

 

Also, device manager does not recognise the HH251D, and calls it a "Universal PnP Monitor" (but with the correct Device ID - and it was recognised and functioned correctly when using an Nvidia card just a few days ago) , and Advanced Display Settings recognises it as "HH251D" along with Radeon Settings, but neither gives the full manufacturer and part number, unlike the BenQ GL2760.

 

Anyone know what could be the issue/fix?

 

TIA

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