I have a very similar problem with DVBWorld 2006 DVB-S2 card. The v4l-dvb ( freshly pulled ) compiles and loads, firmware is loaded, but when I actually try to use it ( dvbstream commands ) the following appears in /var/log/messages: Jan 4 18:30:24 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:24 november kernel: ds3000_readreg: reg=0xd1(error=-1) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_readreg: reg=0xd1(error=-1) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_writereg: writereg error(err == -1, reg == 0xf9, value == 0x04) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_readreg: reg=0xf8(error=-1) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_writereg: writereg error(err == -1, reg == 0x03, value == 0x12) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_tuner_readreg: reg=0x3d(error=-1) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_writereg: writereg error(err == -1, reg == 0x03, value == 0x12) Jan 4 18:30:25 november kernel: i2c_sendbytes: i2c error NAK or timeout occur Jan 4 18:30:25 november kernel: ds3000_tuner_readreg: reg=0x21(error=-1) ... and many more of this. Actually I have to say I already tried DVBWorld 2006, NetUP dual DVB-S2 and TwinHan VP-1041 ( like the Technisat card ) but no success at all. DVBWorld is giving me errors like above, NetUP's driver loads but doesn't want to tune to anything, Twinhan can tune to one transponder and scan the channels but for reasons far beyond me fails to tune to anything else. DVB-T ( Leadtek WinFast ) is working for me perfectly, but DVB-S is an exercise in frustration... -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html