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January 11th, 2026 04:24
display
XPS 13 9340 Settings System Display Multiple Displays Detect other 't find another display, so can not find XPS display, only finds external monitor
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January 11th, 2026 04:24
XPS 13 9340 Settings System Display Multiple Displays Detect other 't find another display, so can not find XPS display, only finds external monitor
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ejn63
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January 11th, 2026 12:04
Does the screen self-test work (hold D through powerup)?
user_4d6b6a
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January 14th, 2026 01:15
Yes, screen self-test works with all colors. Also XPS logo appears on boot up, then goes black.
ejn63
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January 14th, 2026 13:40
Check the connection between the screen and mainboard.
Service manual here
https://www.dell.com/support/product-details/en-us/product/xps-13-9340-laptop/resources/manuals