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. Regards Phil -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20160323/008e1a05/attachment-0004.sig>