LNB1 does not work

[pajretX]

Hi, I just finished configuring my HTPC and I discovered that LNB1 on my TBS 6981 does not work :/
I used w_scan and correctly configured vdr to check this.
When LNB is connected to LNB2 socket on the card everything works more or less flawlessly.
Both adapters are listed on the system:

htpc@HTPC:~$ ls /dev/dvb/
adapter0 adapter1

htpc@HTPC:~$ ls /dev/dvb/adapter0/
demux0 dvr0 frontend0 net0

htpc@HTPC:~$ ls /dev/dvb/adapter1/
demux0 dvr0 frontend0 net0

I'm using UBUNTU 10.04 with linux-tbs-drivers_110818. I have all three molex power plugs connected.

What could be the problem here?

Regards,