Hi did you have any luck getting this working? I am having the same problem, same TV model and I also am an Ubuntu user.
Hi, A few days ago I buy this TV (EU40C5100), and I am trying to connect with my pc using DLNA, I am using MediaTomb server in ubuntu, but the television didn't recognize the pc, however, I haven't this problem on the PlayStation 3 , namely, ps3 identifies MediaTomb server but no tv. why is that??