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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!
DELL-Chris M
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September 15th, 2015 06:00
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.
Birkwl
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September 15th, 2015 14:00
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.
DELL-Chris M
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September 15th, 2015 22:00
We are up to A03. The only way to get them is via used exchanges.
Birkwl
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September 16th, 2015 10:00
Does that mean I need to exchange my monitors for refurbished ones? Is this a warranty issue?
DELL-Chris M
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September 16th, 2015 12:00
Yes to both.