Phil Wyett wrote:
On Wed, 2016-03-23 at 10:26 -0400, m.roth@5-cent.us wrote:
<snip>
What is the make/model of the card?
lspci says: Brooktree Corporation Bt878 Audio Capture (rev 11)
Are you supplying options when loading the bttv module?
On and off, I've been googling to find if there's something I can tell it,or the kernel on boot. Currently, I have, in /etc/modprobe.d/bttv: options i2c-algo-bit bit_test=1 options bttv gbuffers=16 card=98,98,98,98,98,98,98,98 radio=0,0,0,0,0,0,0,0 tuner=4,4,4,4,4,4,4,4 chroma_agc=1 combfilter=2 full_luma_range=1 coring=1
The options line 1 is used widely and only worth changing if all else fails.
The second options line option of combfilter by docs indicate there is no 2 option and is enabled by default, so you can remove that option to test.
I would enable two possible compatibility options and see if that helps.
triton1=0/1 - for Triton1 (+others) compatibility.
vsfx=0/1 - yet another chipset bug compatibility bit
The triton1 insmod option sets the EN_TBFX bit in the control register. The vsfx insmod option does the same for EN_VSFX bit. If you have stability problems you can try if one of these options makes your box work solid.
Source: http://xawdecode.sourceforge.net/aideUS/htmlpage/BTTV-param.htm
Ok, I've been doing some research, partly refreshing my memory, since we bought these 2-3 years ago. As you note, above, it *says* it's an iTuner Spectra8; *however*, when I look at bttv-cards.c, what I see is that *it* thinks that such a card has *one* video and one audio. In fact, this is a Bt878, and it has *four* inputs for each, with four chips on the card, one for each channel. The nearest thing to it *appears* to be a Provideo PV150, card=98 (which is why I have that card= line in the bttv.conf).
Now that I'm thinking about it, and while googling, I looked for the provideo 150, and what *should* have been the link took me to one for a provideo 950, with *16* inputs. Does anyone have opinions on: 1. should I change the card-, radio=, and tuner= to only have four, instead of 8, values? I realize that it multiplexes for 8, but.... 2. What is "coring"?
mark