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U2913WM, DDM error?
I can use display manager at start up but after 20 minutes or so I get the DDM (Dell Display Manager) error and have to switch off the monitor one or more times to connect again. HDMI connection.
DELL-Chris M
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June 30th, 2015 19:00
In addition to the HDMI cable, did you try plugging the monitor USB upstream cable directly into a USB port on the computer?