[linux-dvb] Twinhan dvb-c tuning problems, help needed

[Toni Willberg <toniw@iki.fi>]

It seems that I can't get my Twinhan DVB-C card to lock on channels at
all. I tested the same card on a computer running Windows 2000, and it
was able to lock.

This is how I tried, please correct errorneus commands/parameters and
give some hints how to debug the problem. This box is FC3 running Kernel
2.6.9-1.681_FC3.

All help welcome!

# modprobe bttv i2c_hw=1 card=0x71
Dec  8 19:21:03 nasu kernel: Linux video capture interface: v1.00
Dec  8 19:21:03 nasu kernel: bttv: driver version 0.9.15 loaded
Dec  8 19:21:03 nasu kernel: bttv: using 8 buffers with 2080k (520
pages) each for capture
Dec  8 19:21:03 nasu kernel: bttv: Bt8xx card found (0).
Dec  8 19:21:03 nasu kernel: PCI: Found IRQ 12 for device 0000:00:12.0
Dec  8 19:21:03 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:07.2
Dec  8 19:21:03 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:07.3
Dec  8 19:21:03 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:12.1
Dec  8 19:21:03 nasu kernel: bttv0: Bt878 (rev 17) at 0000:00:12.0, irq:
12, latency: 32, mmio: 0xdf012000
Dec  8 19:21:03 nasu kernel: bttv0: detected: Twinhan VisionPlus DVB-T
[card=113], PCI subsystem ID is 1822:0001
Dec  8 19:21:03 nasu kernel: bttv0: using: Twinhan DST + clones
[card=113,insmod option]
Dec  8 19:21:03 nasu kernel: bttv0: using tuner=4
Dec  8 19:21:03 nasu kernel: tuner: Ignoring new-style parameters in
presence of obsolete ones
Dec  8 19:21:03 nasu kernel: bttv0: add subdevice "dvb0"

# modprobe dvb-bt8xx
Dec  8 19:21:16 nasu kernel: bt878: AUDIO driver version 0.0.0 loaded
Dec  8 19:21:16 nasu kernel: bt878: Bt878 AUDIO function found (0).
Dec  8 19:21:16 nasu kernel: PCI: Found IRQ 12 for device 0000:00:12.1
Dec  8 19:21:16 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:07.2
Dec  8 19:21:16 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:07.3
Dec  8 19:21:16 nasu kernel: PCI: Sharing IRQ 12 with 0000:00:12.0
Dec  8 19:21:16 nasu kernel: bt878(0): Bt878 (rev 17) at 00:12.1, irq:
12, latency: 32, memory: 0xdf010000
Dec  8 19:21:16 nasu kernel: attach: checking "bt878 #0 [hw]"
Dec  8 19:21:16 nasu kernel: find by pci: checking "bt878 #0 [hw]"
Dec  8 19:21:16 nasu kernel: attach: "bt878 #0 [hw]", to card 0
Dec  8 19:21:16 nasu kernel: DVB: registering new adapter (DST).

# modprobe dst dst_type=2
Dec  8 19:21:28 nasu kernel: bt878 find by dvb adap: checking "DST"
Dec  8 19:21:28 nasu kernel: dst_check_ci: unable to recognize  or DCT-
CI
Dec  8 19:21:28 nasu kernel: dst_check_ci please email linux-
dvb@linuxtv.org with this type in
Dec  8 19:21:28 nasu kernel: DST type : terrestial TV
Dec  8 19:21:28 nasu kernel: DST type flags : 0x4 symdiv
Dec  8 19:21:28 nasu kernel: DVB: registering frontend 0:0 (DST
CABLE)...

# ls -al /dev/dvb/adapter0/frontend0
crw-rw----  1 root video 212, 3 Nov 28 19:04 /dev/dvb/adapter0/frontend0

# czap tv1
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
  1 TV1:283000000:INVERSION_AUTO:5900000:FEC_NONE:QAM_128:512:650:17
  1 TV1: f 283000000, s 5900000, i 2, fec 0, qam 4, v 0x200, a 0x28a
status 00 | signal 0000 | snr 0000 | ber 00aeaa0e | unc 00ac9423 |
status 00 | signal 0000 | snr 0000 | ber 00aeaa0e | unc 00ac9423 |

At this point I should get a lock, but it prints "status 00..."
forever...

Also tested with dvbtune:
# dvbtune  -f 283000000 -s 5900 -qam 128
Using DVB card "DST CABLE"
tuning DVB-C to 283000000, srate=5900000
polling....
Getting frontend event
FE_STATUS:
polling....
polling.... (repeated n-times)


- Toni