I have erratic mouse movement and keyboard issues from these external components when used through the dock via the USB ports. I have an E-Port Plus II dock. If I leave the laptop slightly open the issues go away.
The same issue that was reported here, but no resolution was posted. Is there a fix? en.community.dell.com/.../19997634
Thanks for posting.
Apologies that your xps 13 is having difficulties.
Have you tried updating the bios, usb, and dock drivers?
Did you see my recent reply in that thread suggesting using USB 2.0 ports for keyboard and mouse wireless receivers rather than USB 3.0?