[mythtv-users] No Signal on WinTV GO

Moore, David W. david_w._moore at csgsystems.com
Wed Oct 6 20:33:29 UTC 2004

I'm pulling my hair out here and am hoping someone can help me out. I've scoured google, myth lists, linux lists, etc to figure out what I'm doing wrong. I'm sure its something small, hopefully it will jump out at someone on the list... 
Through MythTV (LiveTV or Record viewing) I'm getting static. I tested my line (connected the cable to a TV and validated signal). I jave an ATI 8500 DV but given much of my research, it would appear that is not a viable option for capture on MythTV so I went out and purchased a WinTV Go card. After following quite a few instructions and recommendations from my research, I got the bttv driver stuff installed in my 2.6 (gentoo) kernel so I have a /dev/video0 device now on my system. I cat the device and it is definitely sending information. I installed xawtv to get some raw processing (prior to running against Myth) and still had static. Issued a scantv command (through xawtv) and received a whole bunch of no signal messages. Here is where I stand on some of the diagnostic / config information: 
Modules installed by hand post-boot: 
modprobe videodev
modprobe cx8800
modprobe tuner debug=1
modprobe msp3400
modprobe bttv tuner=2
dmesg during these module loads: 
Linux video capture interface: v1.00
cx2388x v4l2 driver version 0.0.4 loaded
bttv: driver version 0.9.15 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
bttv: Bt8xx card found (0).
PCI: Enabling device 0000:03:06.0 (0004 -> 0006)
ACPI: PCI interrupt 0000:03:06.0[A] -> GSI 17 (level, low) -> IRQ 17
bttv0: Bt878 (rev 17) at 0000:03:06.0, irq: 17, latency: 32, mmio: 0xef000000
bttv0: detected: Hauppauge WinTV [card=10], PCI subsystem ID is 0070:13eb
bttv0: using: Hauppauge (bt878) [card=10,autodetected]
bttv0: gpio: en=00000000, out=00000000 in=00ffffdb [init]
bttv0: Hauppauge/Voodoo msp34xx: reset line init [5]
tuner: chip found at addr 0xc2 i2c-bus bt878 #0 [sw]
bttv0: Hauppauge eeprom: model=44801, tuner=<NULL> (-1), radio=no
bttv0: using tuner=2
tuner: type set to 2 (Philips NTSC (FI1236,FM1236 and compatibles)) by bt878 #0 [sw]
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known chips: tda9840,tda9873h,tda9874h/a,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54 (PV951),ta8874z
bttv0: registered device video0
bttv0: registered device vbi0
bttv0: PLL: 28636363 => 35468950 .. ok
(tuner=<NULL> (-1) and i2c - not found entries make me nervous) 
Module Size Used by
tvaudio 20876 0 
bttv 146252 0 
msp3400 22036 0 
tuner 18704 0 
cx8800 42780 0 
cx88xx 18692 1 cx8800
video_buf 18308 3 bttv,cx8800,cx88xx
v4l1_compat 13572 1 cx8800
v4l2_common 5504 2 bttv,cx8800
btcx_risc 4360 3 bttv,cx8800,cx88xx
videodev 8192 2 bttv,cx8800
snd_cmipci 31492 0 
snd_opl3_lib 9984 1 snd_cmipci
snd_hwdep 8068 1 snd_opl3_lib
snd_mpu401_uart 7040 1 snd_cmipci
snd_rawmidi 21924 1 snd_mpu401_uart
snd_seq_oss 33664 0 
snd_seq_midi_event 7040 1 snd_seq_oss
snd_seq 54416 4 snd_seq_oss,snd_seq_midi_event
snd_seq_device 7432 4 snd_opl3_lib,snd_rawmidi,snd_seq_oss,snd_seq
snd_pcm_oss 50600 0 
snd_pcm 89860 2 snd_cmipci,snd_pcm_oss
snd_page_alloc 9608 1 snd_pcm
snd_timer 23428 3 snd_opl3_lib,snd_seq,snd_pcm
snd_mixer_oss 18432 1 snd_pcm_oss
snd 51172 13 snd_cmipci,snd_opl3_lib,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_oss,snd_seq_midi_event,snd_seq,snd_seq_device,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
soundcore 8416 1 snd
0000:00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] System Controller (rev 11)
0000:00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] AGP Bridge
0000:00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ISA (rev 05)
0000:00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-768 [Opus] IDE (rev 04)
0000:00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ACPI (rev 03)
0000:00:10.0 PCI bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] PCI (rev 05)
0000:01:05.0 VGA compatible controller: ATI Technologies Inc R200 BB [Radeon All in Wonder 8500DV]
0000:01:05.1 PCI bridge: ATI Technologies Inc R200 BC [Radeon All in Wonder 8500]
0000:02:00.0 FireWire (IEEE 1394): Agere Systems (former Lucent Microelectronics) FW323 (rev 04)
0000:03:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-768 [Opus] USB (rev 07)
0000:03:04.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
0000:03:05.0 Network controller: Texas Instruments ACX 100 22Mbps Wireless Interface
0000:03:06.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
0000:03:06.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
0000:03:08.0 Ethernet controller: D-Link System Inc Gigabit Ethernet Adapter (rev 11)
Thoughts? Comments? Anything would be appreciated. 

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