Olaf Titz wrote: >>+ state->tx_tuna[8] =~ 0x40; //1 >>+ state->tx_tuna[8] |= 0x40; // 0 > > I don't know anything about that device, but this code looks wrong to > me. The "1" line sets the whole register and the "0" line a single > bit. Shouldn't that rather be something like > >>+ state->tx_tuna[8] &= ~0x40; //1 > Yep, that's the correct one .. The reason why the earlier patched worked for Allan was that the rest of the bits in the register are Don't care terms for his card .. So setting the entire register to 0x00 worked for him.. For some of the other cards, they do test both horizontal and vertical polarities if none is supplied .. Sorry, for the confusion added .. Manu