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Birkwl
1 Copper

U2414H Dual Monitor DisplayPort Daisy Chain Issues

I have been searching the forums here, on MS, and elsewhere and it seems like a lot of people are having the same issue I am with daisy chained U2414H monitors. I didn't have the issue frequently until updating to Windows10. Now, when my monitors wake, usually the second monitor in the chain (last) either will not recognize a signal, or when it does it shows up only as a generic monitor with 640x480 resolution. Display settings and AMD Catalyst don't allow for any adjustment in the second monitor resolution or even drivers.

Setup is a Dell Core i7 XPS tower with AMD Radeon HD7700 graphics card, (2) Dell U2414H monitors, daisy chained with included DisplayPort cables.

I have tried modifying settings on each monitor to no avail. I have also tried switching monitors, and the second monitor (last) in the chain is always the fail point. I reinstalled the Dell driver (1.0.0) which also didn't work. I have also tried the power unplug method, and restarting my system in each configuration of monitor on/off. The issue seemed sporadic before, but in the last 2 days, now the second monitor will not be recognized beyond "Generic."

Please help!

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Moderator
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RE: U2414H Dual Monitor DisplayPort Daisy Chain Issues

What revision (A00, A01) are these U2414H? I find it odd that both monitors set as Secondary in the DP chain show as Generic. But both appear correct as the Primary. Try installing the newest AMD Radeon driver.

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Birkwl
1 Copper

RE: U2414H Dual Monitor DisplayPort Daisy Chain Issues

Both monitors are A01. I did update/install the latest AMD driver after reinstalling the Dell driver didn't work.

After playing with everything, I was able to get them both to work properly after unplugging everything, and replugging. This seems to be related to the computer shutting off the monitors (after designated 5-minute inactivity). If I physically turn off each monitor before they sleep, then turn them on when I'm ready to work in my desktop again, they seem to work normally. However, if I forget to turn them off, I have to go through the unplug/replug cycle before they'll work again. Real pain when I go back and forth between drawing on my physical desktop and on the computer, which I do often for my design work.

This also seems to happen when I have my Surface Pro 3 dock as the input source.

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RE: U2414H Dual Monitor DisplayPort Daisy Chain Issues

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Birkwl
1 Copper

RE: U2414H Dual Monitor DisplayPort Daisy Chain Issues

Does that mean I need to exchange my monitors for refurbished ones? Is this a warranty issue?

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RE: U2414H Dual Monitor DisplayPort Daisy Chain Issues

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