Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | |
| 2 | Release notes for bttv |
| 3 | ====================== |
| 4 | |
| 5 | You'll need at least these config options for bttv: |
| 6 | CONFIG_I2C=m |
| 7 | CONFIG_I2C_ALGOBIT=m |
| 8 | CONFIG_VIDEO_DEV=m |
| 9 | |
| 10 | The latest bttv version is available from http://bytesex.org/bttv/ |
| 11 | |
| 12 | |
| 13 | Make bttv work with your card |
| 14 | ----------------------------- |
| 15 | |
| 16 | Just try "modprobe bttv" and see if that works. |
| 17 | |
| 18 | If it doesn't bttv likely could not autodetect your card and needs some |
| 19 | insmod options. The most important insmod option for bttv is "card=n" |
| 20 | to select the correct card type. If you get video but no sound you've |
| 21 | very likely specified the wrong (or no) card type. A list of supported |
| 22 | cards is in CARDLIST.bttv |
| 23 | |
| 24 | If bttv takes very long to load (happens sometimes with the cheap |
| 25 | cards which have no tuner), try adding this to your modules.conf: |
| 26 | options i2c-algo-bit bit_test=1 |
| 27 | |
| 28 | For the WinTV/PVR you need one firmware file from the driver CD: |
| 29 | hcwamc.rbf. The file is in the pvr45xxx.exe archive (self-extracting |
| 30 | zip file, unzip can unpack it). Put it into the /etc/pvr directory or |
| 31 | use the firm_altera=<path> insmod option to point the driver to the |
| 32 | location of the file. |
| 33 | |
| 34 | If your card isn't listed in CARDLIST.bttv or if you have trouble making |
| 35 | audio work, you should read the Sound-FAQ. |
| 36 | |
| 37 | |
| 38 | Autodetecting cards |
| 39 | ------------------- |
| 40 | |
| 41 | bttv uses the PCI Subsystem ID to autodetect the card type. lspci lists |
| 42 | the Subsystem ID in the second line, looks like this: |
| 43 | |
| 44 | 00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02) |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 45 | Subsystem: Hauppauge computer works Inc. WinTV/GO |
| 46 | Flags: bus master, medium devsel, latency 32, IRQ 5 |
| 47 | Memory at e2000000 (32-bit, prefetchable) [size=4K] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | only bt878-based cards can have a subsystem ID (which does not mean |
| 50 | that every card really has one). bt848 cards can't have a Subsystem |
| 51 | ID and therefore can't be autodetected. There is a list with the ID's |
| 52 | in bttv-cards.c (in case you are intrested or want to mail patches |
| 53 | with updates). |
| 54 | |
| 55 | |
| 56 | Still doesn't work? |
| 57 | ------------------- |
| 58 | |
| 59 | I do NOT have a lab with 30+ different grabber boards and a |
| 60 | PAL/NTSC/SECAM test signal generator at home, so I often can't |
| 61 | reproduce your problems. This makes debugging very difficult for me. |
| 62 | If you have some knowledge and spare time, please try to fix this |
| 63 | yourself (patches very welcome of course...) You know: The linux |
| 64 | slogan is "Do it yourself". |
| 65 | |
Hans Verkuil | 15965f0 | 2009-03-14 15:06:08 -0300 | [diff] [blame] | 66 | There is a mailing list: linux-media@vger.kernel.org |
| 67 | http://vger.kernel.org/vger-lists.html#linux-media |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | If you have trouble with some specific TV card, try to ask there |
| 70 | instead of mailing me directly. The chance that someone with the |
| 71 | same card listens there is much higher... |
| 72 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 73 | For problems with sound: There are a lot of different systems used |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | for TV sound all over the world. And there are also different chips |
| 75 | which decode the audio signal. Reports about sound problems ("stereo |
| 76 | does'nt work") are pretty useless unless you include some details |
| 77 | about your hardware and the TV sound scheme used in your country (or |
| 78 | at least the country you are living in). |
| 79 | |
| 80 | |
| 81 | Finally: If you mail some patches for bttv around the world (to |
| 82 | linux-kernel/Alan/Linus/...), please Cc: me. |
| 83 | |
| 84 | |
| 85 | Have fun with bttv, |
| 86 | |
| 87 | Gerd |
| 88 | |
| 89 | -- |
| 90 | Gerd Knorr <kraxel@bytesex.org> |