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C2422HE, daisy chained, not waking P2422H
We have around 200 C2422HE daisy chained to either P2422H or U2422HE. When the C's are chained to the U monitors with MST "on" on both, wake works fine.
Without MST enabled on the U, the U fails to wake without a toggle of the joystick on the back of the monitor or power cycled. We've worked with this by just enabling MST on both the C and the U.
With the C chained to the P monitors, the Ps will not wake unless toggled by the joystick (or power cycled).
I found this post and hoped there was a firmware update for the C2422HE that would correct this issue?
P2422HE to P2422H, daisy chained, not waking P2422H?
The monitor I am testing with is running M2T105. Online, I could only find M2T104 (an older version). I have not downgraded to test as of yet. Do you have any suggestions?
AHardy
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February 27th, 2023 09:00
We ended up hard setting the input on the secondary monitor. As long as it was on auto, it would continue to not wake up appropriately, regardless of firmware.
DELL-Chris M
Community Manager
Community Manager
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54.2K Posts
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August 15th, 2022 03:00
The C2422HE drivers page shows the April 4, 2022 M2T108 firmware update. Check the C2422HE Menu- Others and verify that all are running M2T108 or later. It is never advisable to install an "older" firmware on top of a newer firmware.
The U2422HE drivers page only shows the older September 20, 2021 M3B304 firmware update.
The P2422H drivers page does not show any firmware updates.
DDC/CI should be turned ON in all three monitor Menu- Others.
Typically, the secondary monitor does not need MST On.
In any MST DP daisy chain setup, the secondary monitor must be using its DP in port.
AHardy
3 Posts
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August 15th, 2022 04:00
Awesome, ty. Will try that today.
LAL95
2 Posts
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February 16th, 2023 22:00
Was your issue resolved? We are having the same problem