I bought TBS8921 card a month ago and I'm using it in my HTPC which is based on Window 7 64-bit. I use driver 1.0.0.3.
During full scan of Astra 19,2 or Hotbird 13 transponders I get occasional BSODs (Windows blue screens), no metter if it's done from latest DVBDream or Mediaporal which I use as HTPC software. I saw here on the forum that others are getting BSOD's in other situations, so could it be problem with the driver, version (1.0.0.3) is quite fresh ?
Also I'm having problems in Mediaportal when I try to switch from DVB-T channel ran on other manufacturer's card (BGT-3500) to any DVB-S(2) channel on this card. Mediaportal is not able to run graph and obtain signal lock after this switch, so I get 'no signal' error even though there is plenty of signal available. Could it be also some problem with the driver ... ? Using only DVB-S channel works ok, although DVBDream has noticable faster zapping than Mediaportal - is there any special BDA support for this card built-in DVBDream that other programs don't have ? And I get very fast zapping od DVB-T channels in Mediaportal which I would like to see also on this DVB-S card