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abstruse_goose
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September 9th, 2021 16:00
U2721DE, can't choose Auto Select input source?
As title says, I'm using a U2721DE monitor and I can't activate Auto Select.
The menu allows choosing USB Type-C, DP, or HDMI.
"Auto Select", Auto Select for USB-C and Reset Input Source are all greyed out.
I want to share between two PCs, one on USB Type-C and the other on HDMI. But it's quite annoying changing the input manually (turn off from standby, turn on, activate menu, etc.)
What do I need to do to enable the Auto Select mode? I didn't see any clues in the manual.
Firmware version M3T103.
1741
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Posted September 10th, 2021 06:00
Interesting. What are the video cards/GPUs in both PC?
DELL-Chris M (old account)
#IWork4Dell
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Posted September 16th, 2025 16:32
@abstruse_goose , thank you, I had the same problem and this fixed my issue by pressing 8 seconds and selected DP 1.2 (in my case)
abstruse_goose
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Posted September 9th, 2021 16:00
I disabled DP 1.4 by following these steps from the manual and now I can choose Auto Select? Weird but OK.