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January 7th, 2020 06:00
U2415, three MST, waking from PC sleep issue
Hello,
I use a three U2415 monitor setup with the PC using the MST daisy chaining. That works well. But, as soon as the PC goes to sleep and I move the mouse, the PC turns back on but the screens remain black. The screens do not receive a signal. I tried to turn them off and then turn them on again without result. Even a reboot does not systematically turn them back on. I have to cut the power strip so that when I turn on the PC, the screens will turn on too. Before connecting my screens in MST, they were connected respectively to a DisplayPort port on my GTX 1080 Ti which has three DisplayPort and two HDMI. But I am considering buying an Oculus Rift S and it requires a DisplayPort socket. This is why I now use the MST. What could be the origin of the problem?
DELL-Chris M
Community Manager
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56.9K Posts
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January 8th, 2020 06:00
Dell only tested the U2415 MST daisy chain in a DUAL monitor setup as shown here and on page 27.
You need to label all three as A/B/C. Then test multiple configurations of only a DUAL MST (A/B, A/C, etc.) and waking the PC from sleep. This is to try to identify if one of them has the issue or all of them. Does that make sense?
DELL-Chris M
Community Manager
•
56.9K Posts
0
January 9th, 2020 05:00
Awaiting a response to my previous public.