On Wed, Jun 20, 2012 at 5:31 PM, Mack Stanley <mcs1937@xxxxxxxxx> wrote: > Dear Mr. Pascoe, > > I'm writing to you as the maintainer of the cx88-dvb kernel module. > > I recently bought a pci tv card that the kernel identifies as supported: > > 05:00.0 Multimedia video controller [0400]: Conexant Systems, Inc. > CX23880/1/2/3 PCI Video and Audio Decoder [14f1:8800] (rev 05) > Subsystem: Pinnacle Systems Inc. Device [11bd:0051] > > My card appears to be the same card as this Pinnacle card > (http://www.linuxtv.org/wiki/index.php/Pinnacle_PCTV_HD_Card_%28800i%29) > except that it has a Samsung S5H1411 chip in place of the S5H1409 on the > original Pinnacle card identified by the kernel. > > My card is branded "PCTV HD PCI Card 800i" > (http://www.pctvsystems.com/Products/ProductsNorthAmerica/HybridproductsUSA/PCTVHDCard/tabid/171/language/en-US/Default.aspx), > though I bought it as a Hauppauge card > (http://www.newegg.com/Product/Product.aspx?Item=15-116-043&SortField=0&SummaryType=0&Pagesize=10&PurchaseMark=&SelectedRating=-1&VideoOnlyMark=False&VendorMark=&IsFeedbackTab=true&Keywords=linux&Page=1#scrollFullInfo). > > Because of the changed chip, "dvb_attach" returns NULL, so the cx88-dvb > module fails to insert, and no /dev/dvb nodes are created. > > I was able to get around this by copying s5h1411_config > dvico_fusionhdtv7_config to a new > "s5h1411_config pinnacle_pctv_hd_800i_config", then replacing > s5h1409_attach with s5h1411_attach in > case CX88_BOARD_PINNACLE_PCTV_HD_800i in the definition of dvb_register. > > I built against headers for Fedora 16 kernel 3.3.8-1.fc16.x86_64. The > result loads normally and creates /dev/dvb/adaper0 containing demux0, > dvr0, frontend0, and net0. > > "w_scan -fa -A2 -c US -x " produces a long list of frequencies, all but > two of which are in us-Cable-IRC-center-frequencies-QAM256. However, > w_scan finds no "services" and I haven't been able to coax either > scandvb or scte65scan into finding any channels. I don't know whether > this is because my shot-in-the-dark modification to cx88-dvb doesn't > work, or because Comcast has some screwy way of sending signals to its > DTA's. > > I'm of course more than happy to help in any way. > > Thanks for your time, > Mack Hmmm, ok. Let me talk to my contacts at PCTV and see what the deal is there. My guess is the 1409 reached end of life, so they had to switch to the 1411. I'm pretty surprised that they didn't bump the PCI ID though. I'll find out if they're relying on the eeprom to know which demod is present. The scan is probably failing due to something like a mismatched IF output frequency. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
