hugo wrote: >Hi list > >I'm looking for some advice configuring an Avermedia A771-B DVB-T PCI >(with the MT352 chip) card on Linux. > >I had initially started with high hopes of setting up MythTV and recording >stuff, I ended up using Knoppix and nothing worked/works. I've now just >dropped back to trying the simplest of things and just try and get the >LinuxTV DVB apps working (well just the scan application working). > >The first mistake I made was buying a Hauppage Nova-T PCI card - on the >grounds that it's bound to work. Unfortunately I later learnt that it's >the 90002 (?!) model and not the older Phillips based model and basically >doesn't work with Linux. I looked around and eventually picked the >Avermedia A771-B card mainly on the grounds that they've got this lovely >"LINUX COMPATIBLE" claim on the page for the card. > > > >I'm living in the UK in the BlackHill transmitter area. I have installed >Windows XP (not even SP1) onto the hardware I'm using and unsurprisingly >it all works - both the avermedia and hauppage cards work, receive and >play TV. The only reason I was using windows is just to prove the hardware >works - I had got to the stage of thinking that I'd somehow broken the >cards. The aerial works both with a standard set-top box and with the PC >(running windows) using either the Avermedia card or the Hauppage card. >Basically the hardware and aerial works. I know the PC is OK as I have >tried 3 separate (known good) mobo/cpu combos and I get the same results >(or lack of). > >I am using standard stock Slackware 10.2 (no patches, no additions just >whats on the ISO), I'm using the standard 2.6.14.3 kernel downloaded from >www.kernel.org - OK one addition to the stock Slackware 10.2 :-). I'm >using linuxtv-dvb-apps-1.1.0 from linuxtv and I downloaded the CVS >snapshot v4l-dvb-20051208 (downloaded from the website rather than sucked >out of CVS). > >dmesg (with the v4l-dvb-20051208 drivers compiled and installed) gives > >Linux video capture interface: v1.00 >i2c-core: driver [tveeprom] registered >bttv: driver version 0.9.16 loaded >bttv: snapshot date 2005-12-08 >bttv: using 8 buffers with 2080k (520 pages) each for capture >bttv: Bt8xx card found (0). >ACPI: PCI Interrupt 0000:00:09.0[A] -> GSI 17 (level, low) -> IRQ 21 >bttv0: Bt878 (rev 17) at 0000:00:09.0, irq: 21, latency: 32, mmio: 0xde000000 >bttv0: detected: AVermedia AverTV DVB-T 771 [card=123], PCI subsystem ID >is 1461:0771 >bttv0: using: AVerMedia AVerTV DVB-T 771 [card=123,autodetected] >bttv0: gpio: en=00000000, out=00000000 in=00ffff0f [init] >i2c_adapter i2c-1: adapter [bt878 #0 [hw]] registered >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x50 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x50, len=0 >bttv0: using tuner=4 >i2c-core: driver [tuner] registered >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x42 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x42, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x43 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x43, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x4a >i2c_adapter i2c-1: master_xfer[0] W, addr=0x4a, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x4b >i2c_adapter i2c-1: master_xfer[0] W, addr=0x4b, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x60 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x60, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x61 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x61, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x62 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x62, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x63 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x63, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x64 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x64, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x65 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x65, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x66 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x66, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x67 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x67, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x68 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x68, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x69 >i2c_adapter i2c-1: master_xfer[0] W, addr=0x69, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6a >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6a, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6b >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6b, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6c >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6c, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6d >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6d, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6e >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6e, len=0 >i2c_adapter i2c-1: found normal entry for adapter 1, addr 0x6f >i2c_adapter i2c-1: master_xfer[0] W, addr=0x6f, len=0 >bttv0: registered device video0 >bttv0: registered device vbi0 >bttv0: PLL: 28636363 => 35468950 .. ok >bttv0: add subdevice "remote0" >bttv0: add subdevice "dvb0" >bt878: AUDIO driver version 0.0.0 loaded >bt878: Bt878 AUDIO function found (0). >ACPI: PCI Interrupt 0000:00:09.1[A] -> GSI 17 (level, low) -> IRQ 21 >bt878(0): Bt878 (rev 17) at 00:09.1, irq: 21, latency: 32, memory: 0xde001000 > >When I try dmesg with just the standard drivers in the 2.6.14.3 kernel I >still get: > >bttv0: detected: AVermedia AverTV DVB-T 771 [card=123], PCI subsystem ID >is 1461:0771 >bttv0: using: AVerMedia AVerTV DVB-T 771 [card=123,autodetected] > > >I have tried all these things with and without the sc_main.mc firmware >code in the /lib/firmware directory. > >For whatever reasons I have to modprobe the dvb_bt8xx and mt352 modules > >Then in dmesg I can see: > >DVB: registering frontend 0 (Zarlink MT352 DVB-T)... > > >When I try the scan utility from the dvb-apps, using the uk-Blackhill >tuning file (provided with dvb-apps) all I get is: > >root@backend:# ./scan dvb-t/uk-BlackHill >scanning dvb-t/uk-BlackHill >using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' >initial transponder 634167000 0 2 0 3 0 0 0 > > >>>>tune to: >>>> >>>> >634167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE >WARNING: >>> tuning failed!!! > > >>>>tune to: >>>> >>>> >634167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE >(tuning failed) >WARNING: >>> tuning failed!!! >ERROR: initial tuning failed >dumping lists (0 services) >Done. > >It takes 2-3 seconds before I get the first tuning failed message - >basically just enough time to make me think "Yes, this time!" > > >Coincidentally, I also get this failure with the Hauppage card (which also >seems to appear in dmesg). When I was using Knoppmyth (5R26) it detected >the Avermedia card as a Zarlink and when doing a channel scan it just >thinks about things for 10 seconds before saying it failed. > > > >My gut suspicions are: > >1) The Avermedia card A771-B (MT352) is not really supported under Linux, >perhaps some old version using the Ali-bongo chipset (or whatever) >possibly worked. If someone can confirm that this card is not really >supported I will contact Trading Standards in the UK as Avermedia would be >clearly misrepresenting their card (as to it's Linux compatibility) this >is an offence under the Trade descriptions act - it might force Avermedia >to either help the community develop a working driver (unlikely) or remove >the false claim from their website. > > Im running 3 Avermedia 771 cards here. One of which I bought in the last week or 2. Im using Gentoo a 2.6.14 kernel on amd64. >2) DVB support in Linux does not really work in the UK - as the software >is no doubt developed in the US/Europe then it is keyed to their >particular broadcast systems and there is no hard support for the UK. > > Works just fine. Using Mythtv (althought there maybe another subtle problem with 64 bit versions) >3) The Linux DVB drivers actually require a theorectically perfect setup: >perfect 100% signal reception, flat terrain with no obstructions more than >2 feet high between the receiver and the transmitter, also to be within >100.3 meters of the transmitter and to be aligned on a major ley-line. > > Only works at the intersection of 2 ley lines, with a standing stone, during an equinox with the blood of a freshly sacrificed vigin. :-) (sorry couldnt resist) OR Probably not. I managed to tune my cards with a ~50cm extension bit of co ax which i forgot to plug in, >4) It does all work but I need some super-duper experimental alpha release >patch that is hidden in CVS in a disused toilet in the basement of LinuxTv >HQ... > > >Sorry if I'm ranting, for the money and time I've wasted on this I >could've bought a hardware PVR which would just work. Still would like to >get Myth working as it has a couple of nice features. > >Guess my two questions are:...<drumroll>..... > >1) Does anyone in the UK actually really have any DVB-T card, that is >still commerically available as of December 2005, working under linux and >I mean working as in regularly watching and recording stuff (not "I >installed the driver once") and if so which card (and chip set) and how >did you get it working (some pointers at least). > > Yes, 3 avermedia 771s (mt352 chip) running happily for 1+ years (well 2 were just bought the 3rd from medialtlantic.co.uk (nothing todo with me.)) I use MythTv to record etc all the time. >2) In particular: does anyone in the UK have the Avermedia A771-B (mt352) >DVB-T PCI card working under Linux and if so how. > > The only thing that springs to mind. in the uk_BlackHill file. (tuning/scan file) try altering the values QAM16 or QAM64 fec: 1/2 2/3 3/4 (both the hi and low.) Try these transponders (scan file) NOTE the QAM and fec (1/2 2/3 etc) are more than likley wrong, hack to suit. Transponders C and D look good as they have alot more power. # Auto Generated config. By Peter Henderson www.starjar.com # Black Hill map ref NS828647 # # All values scrapped from # http://www.ofcom.org.uk/static/reception_advice/digital_trans_guide/index.asp-region=show_all.html # # If you are having problems try changing QAM16 to QAM64 # and or the FEC values 1/2 or 2/3 or 3/4 or NONE # # T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy # Multiplex 1 BBC power 20.0 kW offset 1 T 634167000 8MHz 1/2 NONE QAM16 2k 1/32 NONE # Multiplex 2 Digital 3&4 power 20.0 kW offset 1 T 682167000 8MHz 1/2 NONE QAM16 2k 1/32 NONE # Multiplex A SDN power 20.0 kW offset 1 T 658167000 8MHz 1/2 NONE QAM16 2k 1/32 NONE # Multiplex B BBC power 20.0 kW offset 1 T 714167000 8MHz 1/2 NONE QAM16 2k 1/32 NONE # Multiplex C Crown Castle power 20.0 kW offset 0 T 746000000 8MHz 1/2 NONE QAM16 2k 1/32 NONE # Multiplex D Crown Castle power 20.0 kW offset 0 T 826000000 8MHz 1/2 NONE QAM16 2k 1/32 NONE > >Any help would be gratefully received or if there is any extra info that >you would like to know (as no doubt I have not mentioned a load of stuff). >Even if my gut feelings are correct and it just doesn't work (never has, >never will) then I'd be happy to know as then I could just go out and buy >a PVR - once I'd whinged to Avermedia and Trading standards..... > > > >Many thanks > >Hugo > >_______________________________________________ > >linux-dvb@xxxxxxxxxxx >http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > > >
