Terratec Cinergy HT MKII has a VHF problem.

I think I found a bug in the "Terratec Cinergy HT PCI MKII."
The card basically works, but the DVB stations in the VHF band have a problem. I can watch them (with xine or me-TV) or scan them only after a reboot, because if I change to a UHF station and then I re-tune to the previous VHF station, it doesn't work anymore.
Here what happens with scandvb:

[janez@athlon650 ~]$ cat rai
T 177500000 7MHz 3/4 NONE QAM64 8k 1/32 NONE [janez@athlon650 ~]$ cat med
T 698000000 8MHz 2/3 NONE QAM64 8k 1/32 NONE [janez@athlon650 ~]$ scandvb rai
scanning rai
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' initial transponder 177500000 1 3 9 3 1 0 0

177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE 0x0000 0x0d49: pmt_pid 0x0102 RAI -- Rai 1 (running) 0x0000 0x0d4a: pmt_pid 0x0101 RAI -- Rai 2 (running) 0x0000 0x0d4b: pmt_pid 0x0100 RAI -- Rai 3 TGR Veneto (running) 0x0000 0x0d53: pmt_pid 0x0118 RAI -- Rai News (running) 0x0000 0x0d4c: pmt_pid 0x0103 Rai -- Rai Radio1 (running) 0x0000 0x0d4d: pmt_pid 0x0104 Rai -- Rai Radio2 (running) 0x0000 0x0d4e: pmt_pid 0x0105 Rai -- Rai Radio3 (running) Network Name 'Rai'

1600000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE __tune_to_transponder:1483: ERROR: Setting frontend parameters failed: 22 Invalid argument

1600000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_16:HIERARCHY_NONE __tune_to_transponder:1483: ERROR: Setting frontend parameters failed: 22 Invalid argument
dumping lists (7 services)
Rai 1:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:512:650:3401 Rai 2:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:513:651:3402 Rai 3 TGR Veneto:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:514:652:3403 Rai News:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:520:690:3411 Rai Radio1:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:653:3404 Rai Radio2:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:654:3405 Rai Radio3:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:655:3406 Done.
[janez@athlon650 ~]$ scandvb med
scanning med
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' initial transponder 698000000 0 2 9 3 1 0 0

698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE 0x0000 0x0001: pmt_pid 0x0065 (null) -- Servizio OTA (running) 0x0000 0x03ec: pmt_pid 0x0101 (null) -- Servizio4 (running) 0x0000 0x03ed: pmt_pid 0x0105 (null) -- Servizio5 (running) 0x0000 0x03ee: pmt_pid 0x0106 (null) -- Servizio6 (running) 0x0000 0x03ef: pmt_pid 0x0107 (null) -- Servizio7 (running) 0x0000 0x03f0: pmt_pid 0x0108 (null) -- Servizio8 (running) 0x0000 0x03f1: pmt_pid 0x0109 (null) -- Servizio9 (running) 0x0000 0x03f2: pmt_pid 0x010a (null) -- Servizio10 (running) 0x0000 0x03f3: pmt_pid 0x010b (null) -- Servizio11 (running) 0x0000 0x03f4: pmt_pid 0x010c (null) -- Servizio12 (running) 0x0000 0x0fa4: pmt_pid 0x00cc Mediaset -- Rete4 (running)
0x0000 0x0fa5: pmt_pid 0x00cd Mediaset -- Canale5 (running) 0x0000 0x0fa6: pmt_pid 0x00ce Mediaset -- Italia1 (running) 0x0000 0x0fab: pmt_pid 0x00d3 Mediaset -- Mediaset Extra (running) 0x0000 0x0fad: pmt_pid 0x00d5 Mediaset -- La 5 (running)
Network Name 'Mediaset4'
dumping lists (15 services)
Servizio OTA:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1 Servizio4:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1004 Servizio5:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1005 Servizio6:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1006 Servizio7:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1007 Servizio8:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1008 Servizio9:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1009 Servizio10:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1010 Servizio11:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1011 Servizio12:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:1012 Rete4:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1630:1631:4004 Canale5:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1610:1611:4005 Italia1:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1620:1621:4006 Mediaset Extra:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1760:1761:4011 La 5:698000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1730:1731:4013 Done.
[janez@athlon650 ~]$ scandvb rai
scanning rai
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' initial transponder 177500000 1 3 9 3 1 0 0

177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: filter timeout pid 0x0011
WARNING: filter timeout pid 0x0010
dumping lists (7 services) [0d49]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:512:650:3401 [0d4a]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:513:651:3402 [0d4b]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:514:652:3403 [0d53]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:520:690:3411 [0d4c]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:653:3404 [0d4d]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:654:3405 [0d4e]:177500000:INVERSION_AUTO:BANDWIDTH_7_MHZ:FEC_3_4:FEC_AUTO:
QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:0:655:3406 Done.
[janez@athlon650 ~]$

As you can see the second time the scanning of that frequency doesn't work anymore. It will work again only after a reboot!

There is the same behaviour with me-TV. I cannot watch the VHF stations if I watched (or scanned) a UHF station before.

The card works in Windows XP (the VHF stations too). So it is not an hardware problem.

PS: There is another problem with "Rai 3 TGR Veneto", I cannot see anything, only the audio works (only after a reboot, of course).

There is no need to reboot the system.
Remove and reload the module cx88_dvb does the trick.