Hello,
i did a fresh installation of knoppmyth and after the reboot when mythtv-setup starts i configure step1 and when i choose step2 and select a new card nothing more happens.
There comes no dialog and when i press Alt-Tab i see no hint why. Only scheme generation and date.
I have a dvb-t card and also a bt848 capture card.
Any clues what happens there ?

Ok, it seems as if the linux kernel crashed when selecting step2:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
00000000
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
Modules linked in: sata_nv shpchp pci_hotplug ehci_hcd analog gameport 8250_pnp
pcspkr tsdev evdev md5 ipv6 autofs4 af_packet snd_mixer_oss snd_intel8x0 snd_ac9
7_codec snd_pcm snd_timer snd_page_alloc snd soundcore bttv video_buf i2c_algo_b
it v4l2_common btcx_risc tveeprom videodev forcedeth skystar2 dvb_core mt352 stv
0299 nxt2002 firmware_class mt312 i2c_nforce2 i2c_core nvidia_agp agpgart parpor
t_pc parport 8250 serial_core ohci1394 pcmcia yenta_socket rsrc_nonstatic pcmcia
_core video thermal processor fan container button battery ac rtc ieee1394 usb_s
torage ohci_hcd uhci_hcd usbcore tmscsim BusLogic
CPU: 0
EIP: 0060:[<00000000>] Not tainted VLI
EFLAGS: 00010246 (2.6.11.9-chw-2)
EIP is at 0x0
eax: e1068234 ebx: df924800 ecx: 00000001 edx: 00000001
esi: df924908 edi: 00000000 ebp: 00000000 esp: cfc7ff4c
ds: 007b es: 007b ss: 0068
Process kdvb-fe-0 (pid: 5548, threadinfo=cfc7e000 task=d489f550)
Stack: e103197e df924908 df924908 e10323e7 00000002 df924908 df7cd400 e10801d3
df924908 cfc7e000 e1080643 df924908 00005454 00000000 00000000 00000bb8
cfc7ffa4 c03e7baf c01175a0 00ec8f60 df237040 df523800 cfc7ffb8 c01175ee
Call Trace:
[<e103197e>] mt352_init+0x4e/0x70 [mt352]
[<e10801d3>] dvb_frontend_init+0x23/0x40 [dvb_core]
[<e1080643>] dvb_frontend_thread+0x93/0x4d0 [dvb_core]
[<c03e7baf>] _spin_unlock_irq+0xf/0x30
[<c01175a0>] finish_task_switch+0x30/0x70
[<c01175ee>] schedule_tail+0xe/0x50
[<c0102ed6>] ret_from_fork+0x6/0x20
[<e10805b0>] dvb_frontend_thread+0x0/0x4d0 [dvb_core]
[<e10805b0>] dvb_frontend_thread+0x0/0x4d0 [dvb_core]
[<c01012f9>] kernel_thread_helper+0x5/0xc
Code: Bad EIP value.