91 lines
3.1 KiB
Plaintext
91 lines
3.1 KiB
Plaintext
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Release notes for bttv
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======================
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You'll need at least these config options for bttv:
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CONFIG_I2C=m
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CONFIG_I2C_ALGOBIT=m
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CONFIG_VIDEO_DEV=m
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The latest bttv version is available from http://bytesex.org/bttv/
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Make bttv work with your card
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-----------------------------
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Just try "modprobe bttv" and see if that works.
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If it doesn't bttv likely could not autodetect your card and needs some
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insmod options. The most important insmod option for bttv is "card=n"
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to select the correct card type. If you get video but no sound you've
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very likely specified the wrong (or no) card type. A list of supported
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cards is in CARDLIST.bttv
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If bttv takes very long to load (happens sometimes with the cheap
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cards which have no tuner), try adding this to your modules.conf:
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options i2c-algo-bit bit_test=1
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For the WinTV/PVR you need one firmware file from the driver CD:
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hcwamc.rbf. The file is in the pvr45xxx.exe archive (self-extracting
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zip file, unzip can unpack it). Put it into the /etc/pvr directory or
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use the firm_altera=<path> insmod option to point the driver to the
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location of the file.
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If your card isn't listed in CARDLIST.bttv or if you have trouble making
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audio work, you should read the Sound-FAQ.
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Autodetecting cards
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-------------------
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bttv uses the PCI Subsystem ID to autodetect the card type. lspci lists
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the Subsystem ID in the second line, looks like this:
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00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02)
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Subsystem: Hauppauge computer works Inc. WinTV/GO
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Flags: bus master, medium devsel, latency 32, IRQ 5
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Memory at e2000000 (32-bit, prefetchable) [size=4K]
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only bt878-based cards can have a subsystem ID (which does not mean
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that every card really has one). bt848 cards can't have a Subsystem
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ID and therefore can't be autodetected. There is a list with the ID's
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in bttv-cards.c (in case you are intrested or want to mail patches
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with updates).
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Still doesn't work?
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-------------------
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I do NOT have a lab with 30+ different grabber boards and a
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PAL/NTSC/SECAM test signal generator at home, so I often can't
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reproduce your problems. This makes debugging very difficult for me.
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If you have some knowledge and spare time, please try to fix this
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yourself (patches very welcome of course...) You know: The linux
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slogan is "Do it yourself".
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There is a mailing list: linux-media@vger.kernel.org
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http://vger.kernel.org/vger-lists.html#linux-media
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If you have trouble with some specific TV card, try to ask there
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instead of mailing me directly. The chance that someone with the
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same card listens there is much higher...
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For problems with sound: There are a lot of different systems used
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for TV sound all over the world. And there are also different chips
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which decode the audio signal. Reports about sound problems ("stereo
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does'nt work") are pretty useless unless you include some details
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about your hardware and the TV sound scheme used in your country (or
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at least the country you are living in).
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Finally: If you mail some patches for bttv around the world (to
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linux-kernel/Alan/Linus/...), please Cc: me.
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Have fun with bttv,
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Gerd
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--
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Gerd Knorr <kraxel@bytesex.org>
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