Phil Wyett wrote: > On Wed, 2016-03-23 at 15:16 -0400, m.roth at 5-cent.us wrote: >> Phil Wyett wrote: >> > On Wed, 2016-03-23 at 10:26 -0400, m.roth at 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 > > Hi Mark, > > It did specify spectra 8 in your lspci output. Below is product page. > > http://www.ituner.com/spectra.htm > > In my research I did find this related page. > > http://www.linuxconsulting.ro/spectra8/ > > This does state that with latest internal driver, it is detected and > works as the ProVision 150. The card=98,... is correct. > > The matter of reducing all the settings to 4 rather than 8 may help. > > coring is a luma setting. See: > > https://www.linuxtv.org/wiki/index.php/Bttv#insmod_Options > > Not sure and someone else maybe can shed better light on the setting. By > default it is disabled and I would tend to think it can be removed. > Any thoughts on the number of buffers? mark