Comment 30 for bug 459523

Excellent thread. Comment 16 solved it for me - although I created /etc/modprobe.d/mod_dvb.conf (instead of options).

using:
  karmic 64 (2.6.31-14-generic #48-Ubuntu SMP)
  firmware
  latest v4l mercurial repository (as of 9-Nov-2009), commented CONFIG_DVB_FIREDTV as above

Previously I had both tuners on working after a cold boot, then each tuner would hang with loads of errors in the logs.

Now all I get after a cold boot is:
[ 12.277550] DVB: registering new adapter (DViCO FusionHDTV DVB-T Dual Digital 4)
[ 12.302528] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input11
[ 12.344517] cxusb: No IR receiver detected on this device.
[ 12.344522] DVB: registering adapter 1 frontend 0 (Zarlink ZL10353 DVB-T)...
[ 12.344682] xc2028 1-0061: creating new instance
[ 12.344684] xc2028 1-0061: type set to XCeive xc2028/xc3028 tuner
[ 12.345278] dvb-usb: DViCO FusionHDTV DVB-T Dual Digital 4 successfully initialized and connected.
[ 12.345318] usbcore: registered new interface driver dvb_usb_cxusb

then after first TV tuner use:
[ 1006.663019] usb 3-1: firmware: requesting xc3028-v27.fw
[ 1006.703214] xc2028 0-0061: Loading 80 firmware images from xc3028-v27.fw, type: xc2028 firmware, ver 2.7
[ 1006.731522] xc2028 0-0061: Loading firmware for type=BASE F8MHZ (3), id 0000000000000000.
[ 1017.450677] xc2028 0-0061: Loading firmware for type=D2633 DTV7 (90), id 0000000000000000.
[ 1017.651263] xc2028 0-0061: Loading SCODE for type=SCODE HAS_IF_5260 (60000000), id 0000000000000000.
[ 1084.465935] usb 3-2: firmware: requesting xc3028-v27.fw
[ 1084.470447] xc2028 1-0061: Loading 80 firmware images from xc3028-v27.fw, type: xc2028 firmware, ver 2.7
[ 1084.484064] xc2028 1-0061: Loading firmware for type=BASE F8MHZ (3), id 0000000000000000.
[ 1095.290360] xc2028 1-0061: Loading firmware for type=D2633 DTV7 (90), id 0000000000000000.
[ 1095.501265] xc2028 1-0061: Loading SCODE for type=SCODE HAS_IF_5260 (60000000), id 0000000000000000.

me-tv is working nicely
I can't tune using w_scan as doesn't (yet) support 5.1 as above.

mythtv is working nicely too - although does not appear in sound preferences applications tab