I had been considering my options regarding the SKY dish attached to my house left by the previous owner.
I already had a MythTV setup using FreeView, but wanted to try out the FreeSat HD channels.
I did my research and decided to order the TBS6980 as it was selling for ~35.00 cheaper than its updated brother the TBS6981.
How pleased was I when a shiny new TBS6981 arrived!
So, this review should be considered for the TBS6981.
It is a fantastic card, it comes with everything needed (Low profile bracket, driver CD, card and power cables). It also has a remote sensor and control, but I don't use them.
My setup is a Zotac ION board with a low power Intel Atom CPU and nVidia ION GPU, running Ubuntu 10.10 and MythTV.
After installing the card and booting my machine, I hoped that the Linux kernel would already have drivers. Unfortunately not.
Some googling took me to the TBS website ("TBS6981 Linux" and click on their download section).
I downloaded and followed the instructions to setup the DVB kernel modules.
HINT: run "make menuconfig" and select only the drivers you need - a full build will take about 30 mins on a slow machine like mine!
The TBS is a cx23885 based board.
A reboot later, and /dev/dvb/adapter0 and adapter1 appeared.
MythTV setup recognised the card - don't forget to add the DiSEC "LNB" default, otherwise it wont tune!
Two weeks later, and I'm happy to report that there have been no missed recordings and my low power machine will happily record ITV1 HD and BBC HD whilst playing a recording.
Additional info:
System details:
ZOTAC ION ITX-G Synergy Edition, 1.6GHz, 3GB RAM
mini PCI-E DVB-T tuner (LifeView TV Walker)
PCI-E Dual DVB-S2 tuner (TBS6981)
2x 1TB SATA HDD
HDMI (inc. audio) at 1080p to TV.
CPU Usage:
1 HD channel recording, backend = 10% (20% of one core)
2 HD channels recording, backend = 21% (42% of one core)
2 HD channels recording + watching one of them, backend = 24% (48% of one core), frontend = 8% (16% of one core)
HD Channels were ITV HD and BBC HD, both of which are DVB-S (not S2) as far as I can tell.
All of the transport stream work is done by the CPU and all of the video decoding is handed off to the nVidia ION GPU via VDPAU.