I recently bought an Askey TView CPH061 video grabber board based on a Bt878 chip with a Temic tuner (PAL-BG because I live in Australia.). It works quite well for composite inputs and UHF channels (thanks Gerd and others :-), however it will not receive any VHF channels. (Please see "http://www.vk2nnn.com/spectrum.html#Australian TV Channels" for a table of Australian TV frequencies.) Even when I generate a test signal and feed it directly into the card, when I try and tune that frequency on the VHF band all I get is static. I can't receive any television signals on any of the VHF channels, but I can receive two UHF stations (one of them quite weak.) I have put the card into a Windows based machine and installed the Windows drivers and it can receive all channels on all bands, so I'm putting it down to an anomoly in the Linux bttv drivers. This is very bizzare, as when I look at the debug output from the tuner module, it appears from the kernel messages that the card is being tuned to the correct frequency. I know there is a station on that frequency yet I don't get any picture or sound, so obviously the tuner driver is saying one thing and doing another. Also, when the bttv driver loads, it detects the board as card number 38 (Tview 99 CPH061x) when the card is really number 24 (Askey Magic TView CPH061x.) I have specified the real card number as an insmod option, however neither card number seem to have any effect on the problem. I am using the version of bttv that comes with kernel 2.4.0 (I would get the latest bttv from CVS, but I can't seem to get onto Gerd's site, it looks like it's down..) I am using XawTV 3.26 built from source to watch TV. I have attached the kernel output from when the bttv modules are loaded and my conf.modules file. I hope someone can help me out. I guess the problem could be something in tuner.c that is not tuning the VHF bands properly. I checked all the frequencies in the debug output with the Australian frequency table (link at the top of this post) and they all seem to check out. I'm a bit lost for ideas, not being an expert at bttv and the kernel. I have sent this message to both the kernel list and the video4linux list. Please CC any replies back to me as well as the list. Thankyou in advance -Patrick Burns
Jan 21 19:51:11 stingofdeath kernel: bttv: driver version 0.7.50 loaded Jan 21 19:51:11 stingofdeath kernel: bttv: using 2 buffers with 2080k (4160k total) for capture Jan 21 19:51:11 stingofdeath kernel: bttv: Bt8xx card found (0). Jan 21 19:51:11 stingofdeath kernel: PCI: Found IRQ 10 for device 00:09.0 Jan 21 19:51:11 stingofdeath kernel: PCI: The same IRQ used for device 00:09.1 Jan 21 19:51:11 stingofdeath kernel: bttv0: Bt878 (rev 2) at 00:09.0, irq: 10, latency: 32, memory: 0xed104000 Jan 21 19:51:11 stingofdeath kernel: bttv0: subsystem: 144f:3000 => TView 99 (CPH063) => card=38 Jan 21 19:51:11 stingofdeath kernel: bttv0: model: BT878(Askey/Typhoon/Anubis Ma) [insmod option] Jan 21 19:51:11 stingofdeath kernel: i2c-core.o: adapter bt848 #0 registered as adapter 0. Jan 21 19:51:11 stingofdeath kernel: bttv0: i2c: checking for MSP34xx @ 0x80... not found Jan 21 19:51:11 stingofdeath kernel: bttv0: i2c: checking for TDA9875 @ 0xb0... not found Jan 21 19:51:11 stingofdeath kernel: bttv0: i2c: checking for TDA7432 @ 0x8a... not found Jan 21 19:51:11 stingofdeath kernel: i2c-core.o: driver i2c TV tuner driver registered. Jan 21 19:51:11 stingofdeath kernel: tuner: chip found @ 0x60 Jan 21 19:51:11 stingofdeath kernel: bttv0: i2c attach [Temic PAL] Jan 21 19:51:11 stingofdeath kernel: i2c-core.o: client [Temic PAL] registered to adapter [bt848 #0](pos. 0). Jan 21 19:51:11 stingofdeath kernel: bttv0: open called Jan 21 19:51:12 stingofdeath last message repeated 11 times Jan 21 19:51:12 stingofdeath kernel: tuner: tv freq set to 527.25 Jan 21 19:51:12 stingofdeath kernel: bttv0: open called Jan 21 19:53:10 stingofdeath kernel: bttv0: open called Jan 21 19:53:10 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:10 stingofdeath kernel: bttv0: PLL: 28636363 => 35468950 ... ok Jan 21 19:53:10 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:11 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:11 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:11 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:11 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:16 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:16 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:17 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:17 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:17 stingofdeath kernel: tuner: tv freq set to 64.25 Jan 21 19:53:24 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:24 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:25 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:25 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:25 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:25 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:26 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:26 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:27 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:27 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:27 stingofdeath kernel: tuner: tv freq set to 182.25 Jan 21 19:53:28 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:28 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:29 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:29 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:29 stingofdeath kernel: tuner: tv freq set to 196.25 Jan 21 19:53:29 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:29 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:30 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:30 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:30 stingofdeath kernel: tuner: tv freq set to 209.25 Jan 21 19:53:31 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:31 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:33 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:33 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:33 stingofdeath kernel: tuner: tv freq set to 527.25 Jan 21 19:53:34 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:34 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:35 stingofdeath kernel: Display at e0000000 is 1024 by 768, bytedepth 2, bpl 2048 Jan 21 19:53:35 stingofdeath kernel: bttv0: clip: ro=00228000 re=01bf8000 Jan 21 19:53:35 stingofdeath kernel: tuner: tv freq set to 548.25
# PPP networking alias ppp-compress-21 bsd_comp alias ppp-compress-24 ppp_deflate alias ppp-compress-26 ppp_deflate alias char-major-108 ppp_generic alias tty-ldisc-3 ppp_async alias ppp0 ppp # SCSI scanner # alias char-major-21 sym53c416 sg options sym53c416 sym53c416=0x820,7 # ALSA sound modules alias char-major-116 snd options snd snd_major=116 snd_cards_limit=1 alias snd-card-0 snd-card-cs461x post-install snd-mixer /usr/sbin/alsactl restore post-install snd-card-cs461x /usr/sbin/alsactl restore # OSS/Free setup alias char-major-14 soundcore alias sound-slot-0 snd-card-0 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss alias synth1 snd-seq-oss # Encrypted filesystems alias loop-xfer-gen-0 loop_gen alias cipher-11 rc62 # CD burner options ide-cd ignore=hdc # Don't run CD as IDE alias scd0 sr_mod # Load sr_mod for SCSI cd0 pre-install sg 'modprobe ide-scsi' # Load IDE burners before sg pre-install sr_mod 'modprobe ide-scsi' # Load IDE burners before sr_mod pre-install ide-scsi 'modprobe ide-cd' # Load IDE CD-ROMS _before_ burners # Make sure that IDE CDs are claimed before they are snapped up by # ide-scsi. Also make sure ide-scsi loaded before scsi gen operations. probeall scsi_hostadapter sym53c416 ide-scsi # Network Hardware alias eth0 8139too alias eth1 tulip # Network channel bonding driver # alias bond0 bonding # Infrared Devices (for video capture card remote) alias char-major-61 lirc_gpio # alias char-major-61 lirc_sir # TV Tuner and Video Capture Devices # i2c bus alias char-major-89 i2c-dev options i2c-core i2c_debug=1 # options i2c-algo-bit bit_test=1 # bttv driver alias char-major-81 bttv alias char-major-81-0 bttv options bttv pll=28 card=24 bttv_debug=1 options tuner type=0 debug=1 # alias ip_tables iptable_mangle alias char-major-6 parport
