I have one as well and haven't had this problem. I've been using mostly the HP G4 dock and a Dell dock at the office with an occasional use of the charger. I'm running Linux 6.17.8-arch1-1, it could also be fixed in newer kernels. When I play demanding games, it pulls quite a few watts and all the chargers are keeping up.

It might be your device that is unlucky, maybe contacting support might help.