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XPS 15 9520 with WD22TB4 locks up when waking with 3 2650x1440p monitors attached
XPS 15 9520
This is a very strange problem where if I have 3 monitors attached to my docking station it does not want to wake from sleep and I can get no monitors, including the laptop monitor, to show anything.
If I turn off one monitor before it goes to sleep the laptop wakes fine. If I happen to forget to turn off the 3rd monitor, the system requires a power cycle to get the monitors back again.
I have 2 WD22TB4s and the same problem exists for both.
I have reinstalled Windows 11 with fresh drivers and it did not help.
I have run all Dell diagnostics with no problems.
I am using 2x display port for the Dell monitors, and 1x HDMI for an Aorus monitor
Any suggestions on why this is happening?
rbarone-smartborder.com
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September 26th, 2022 05:00
After doing even more, I realized that this had nothing to do with 3 monitors, but the 2x Dell U2715H monitors
I checked the settings and both had display port 1.2 enabled.
I disabled 1.2 support and everything is working as expected now.
I hope this helps someone as it was very frustrating.