Hello, I've done a bit more testing and the following seems a bit odd: --- Linux video capture interface: v1.00 saa7146: register extension 'dvb'. ACPI: PCI interrupt 0000:00:0d.0[A] -> GSI 16 (level, low) -> IRQ 185 saa7146: found saa7146 @ mem e09e6000 (revision 1, irq 185) (0x13c2,0x000a). DVB: registering new adapter (Technotrend/Hauppauge WinTV Nexus-CA rev1.X). adapter has MAC addr = 00:d0:5c:04:46:5f dvb-ttpci: debi test in av7110_bootarm() failed: 1032c0fe != 10325476 (check yo) --- So, the ARM initialization fails when the module is loaded. However, if I unload all the modules and load them for the second time, I get a different message: --- dvb-ttpci: gpioirq unknown type=0 len=0 dvb-ttpci: info @ card 0: firm f0240009, rtsl b0250018, vid 71010068, app 80002d dvb-ttpci: firmware @ card 0 supports CI link layer interface dvb-ttpci: adac type set to 0 @ card 0 saa7146_vv: saa7146 (0): registered device video0 [v4l2] DVB: registering frontend 0 (ST STV0297 DVB-C)... --- So it seems that there is something strange going on with the card. The card itself works perfectly with Windows so I don't think this is a hardware problem. Could this problem be related to the firmware? Best regards, Mikko.