Hmm the card shouldn't be flawed but it looks like the drivers / firmware really don't like too many reception errors and ARM crash on them after a while.The problem I am facing (and many others it seems) is that the TT DVB-T card falls over constantly and the frontend locks up when you change channel more than a few times. It's not clear if this is a problem with motherboard/powersupply/heat, etc, or whether this card is simply fundamentally flawed.
From what I've read here, the full-featured cards are not terribly reliable. There always seem to be threads about ARM/firmware crashes, particularly in the UK.For most of 2002 until late May 2003 the firmware for the av7110 didn't decode the demanding high bitrate 16:9 DVB-T channels correctly when replaying / using transfer mode. More often than not, especially on the BBC transponder, the screen remained black when tuning to the channel. The rare full featured DVB-T shouldn't have had this type of problem though as it's using "live view" and afaik can make use of the so called "overflow buffer" for decoding.
Are you sure your signal is good enough? I find that my set-top-box is pretty care-free, but my DVB-T cards are *exceptionally* picky about the signal - they'll click and break-up much more easily.I can second all of that. With current driver status it's absolutey crucial to supply the primary card with a strong signal. BTW, interesting behavour in CVS: One of the driver threads hangs at about 50% CPU when trying to tune to the sat with a missing signal. Reloading drivers resolves the problem.
I also find that the DVB drivers and/or VDR are not very good at recovering from bad/no signal conditions. They do like a stable signal!
You can tell VDR to only use certain cards, but don't think you can tell it to use one only for the output (and not as a tuner). From what I've read, you need to keep all your DVB cards in supply of a good signal.