Hey ;-) What's the status of your problem ?
I've exactly the same issue with my XPS 13 (L322X) since several weeks.. And below my story =p :
I changed the AC jack ==> nothing
I am in the same exact boat ! Swapped out the jack port, then battery, and AC adaptor which charged the battery ONCE.
I fear it is indeed the motherboard, I will never, ever buy another DELL laptop. This issue is prevalent. They improve their screens but keep the same cheap components.
I bought a new battery ==> not charging..
I removed the battery and hold down the power button ==> nothing
Then I bought a new AC adapter ==> It worked =D After around 20 minutes my battery began to charge.
BUT, strange,
only during 3 days.. I've been able to use my computer as before (battery was charging and discharging) but not more than 3 days
Why ?
Because I still have 15% of battery I flashed (15min ago) my BIOS to A10.. Still nothing.
What's the problem ? The motherboard ? plz.. no ^^
My battery is not charging and.. is not discharging if I'm plug in the AC adapter. I've 15% of battery since 2 days ^^
And,
worse, my computer performances are poor.. Maximum CPU frequency is curbed to 800Mhz (instead of 2,7GHz) !!!
I was thinking to buy the new XPS 13 2015 but I see you have the same issue than me with your new =| So a bad news !!