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2004 Jul 12 08:44

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Re: [vox-tech] BTTV Problems with multiple cards
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Re: [vox-tech] BTTV Problems with multiple cards



Can you post the following?:

   1. dmesg, when you have only one card (and when everything works.)

   2. Brand name and model of the tuners (not just the chipset name.)

The "readee error" message in dmesg is suspicious.  It turns up some
results on google, some with the green screen error like yours.

The memory mapping and IRQ look good, but the two i2c devices having two
identical addresses is a little concerning.  It's been a while since I've
poked into i2c, but I don't think you're allowed to have two devices with
the same addresses on the same bus.  But many tuners seem to use the same
address yet are able to work together on other systems so maybe it's not a
problem.  We'll see.

-Mark


On Sun, 11 Jul 2004, Hans W. Uhlig wrote:

> --- "Mark K. Kim" <*****@cbreak.org> wrote:
> > On Sun, 11 Jul 2004, Hans W. Uhlig wrote:
> >
> > > I purchased not long ago a new machine to function
> > as
> > > a mythtivo and finished assembling it this
> > weekend,
> > > sadly when I dropped in the three bt878a capture
> > cards
> > > the unit just decides to spit out a
> > greenscreen/static
> > > across the bus. If I rip out any 2 of the cards
> > > leaving just one it works fine.
> >
> > What about leaving two cards in?  Does that do
> > anything?  Try to place the
> > two cards in adjacent PCI slots, rather than two PCI
> > slots that are apart
> > -- that minimizes the IRQ conflicts.  IRQ conflicts
> > are generally not a
> > problem for PCI devices, but it *could* be a problem
> > if you're using two
> > identical devices.
> >
> > The other issue is the IO ports.  All devices have a
> > limited IO ports that
> > they can use, and if all the available IO port
> > ranges are used up, then
> > you'll end up with a conflict.  It's entirely
> > possible the device was
> > designed to use only one range of IO ports (in which
> > case you can't
> > install multiples of that card in one computer.)  To
> > check for this,
> > install two of the cards, then try probing the PCI
> > devices using `lspci
> > -vv`:
> >
> >    # lspci -vv
> >    0000:02:08.0 Multimedia video controller:
> > Brooktree Corporation Bt8...
> >    ...
> >    Region 0: Memory at f46fe000 (32-bit,
> > prefetchable) [size=4K]
> >    ...
> >
> > The above is the listing for my BT878 capture card.
> > Make sure none of the
> > "Region N" listed are same as other devices.  If
> > some of them are same,
> > then you got a conflict, or the card wasn't designed
> > to be installed in
> > multiples in a single computer.
> >
>
>  Logs from dmesg and lspci at bottom of email
>
>
> > If installing two cards works, and if the IRQ and
> > the IO ranges conflict,
> > then try installing the third card.  Then work out
> > the IRQ and the IO at
> > that time, for three card scenario.  Take it one
> > step at a time -- two
> > cards first, then the third.
> >
> > [snip]
> > > Also one other thing to note is while running on
> > one
> > > card only it spits out these messages periodically
> > >
> > > bttv0: timeout: drop=64 irq=97874/97876,
> > > risc=1490e07c, bits: HSYNC OFLOW FDSR
> > > bttv0: reset, reinitialize
> >
> > I've never seen that on my BT878...
> >
> > BTW, what program are you using to view the TV
> > signals?  What commands?
> > Make sure you're using /dev/video0 for the first
> > video device, /dev/video1
> > for the second, and /dev/video2 for the third.  (I
> > use `xawtv`, and I type
> > `xawtv -c /dev/video1` for the second video.)
> >
> mplayer -tv driver=v4l2:device=/dev/video0 tv://
>
> Ive also added height/width specifiers,
> normid=1(NTSC), input=0(TV) and a few other defined
> specs
>
> > Also, make sure you're not using the Xv extension on
> > the second and third
> > instances of the TV signal viewing program, because
> > only one application
> > is allowed to use Xv at any given time.  Most likely
> > you'll have to
> > explicitely tell the program not to use Xv extension
> > (I use `xawtv`, and I
> > type `xawtv -noxv` to turn off the Xv extension.  To
> > combine with the
> > above command, you'd type `xawtv -noxv -c
> > /dev/video1` to view the second
> > TV signal, `xawtv -noxv -c /dev/video2` for the
> > third TV signal.)
> >
>
> Ive never gotten them to run simultainiously at all
> If I plug both in I get green on both if I kill one
> prog and run the second.
>
> > -Mark
> >
> >
> > --
> > Mark K. Kim
> > AIM: markus kimius
> > Homepage: http://www.cbreak.org/
> > Xanga: http://www.xanga.com/vindaci
> > Friendster:
> > http://www.friendster.com/user.php?uid=13046
> > PGP key fingerprint: 7324 BACA 53AD E504 A76E  5167
> > 6822 94F0 F298 5DCE
> > PGP key available on the homepage
> > _______________________________________________
> > vox-tech mailing list
> > vox-tech@lists.lugod.org
> > http://lists.lugod.org/mailman/listinfo/vox-tech
> >
>
> ----------------- Dmesg -------------------
> Linux video capture interface: v1.00
> bttv: driver version 0.9.14 loaded
> bttv: using 8 buffers with 2080k (520 pages) each for
> capture
> bttv: Bt8xx card found (0).
> bttv0: Bt878 (rev 17) at 0000:01:07.0, irq: 16,
> latency: 32, mmio: 0xde000000
> bttv0: using:  *** UNKNOWN/GENERIC ***
> [card=0,autodetected]
> bttv0: gpio: en=00000000, out=00000000 in=003fffff
> [init]
> bttv: readee error
> bttv0: using tuner=2
> bttv0: i2c: checking for MSP34xx @ 0x80... not found
> bttv0: i2c: checking for TDA9875 @ 0xb0... not found
> bttv0: i2c: checking for TDA7432 @ 0x8a... not found
> tuner: chip found at addr 0xc0 i2c-bus bt878 #0 [sw]
> tuner: type set to 2 (Philips NTSC (FI1236,FM1236 and
> compatibles)) by bt878 #0 [sw]
> bttv0: registered device video0
> bttv0: registered device vbi0
> bttv0: registered device radio0
> bttv: Bt8xx card found (1).
> bttv1: Bt878 (rev 17) at 0000:01:08.0, irq: 17,
> latency: 32, mmio: 0xde002000
> bttv1: using:  *** UNKNOWN/GENERIC ***
> [card=0,autodetected]
> bttv1: gpio: en=00000000, out=00000000 in=003fffff
> [init]
> tuner: chip found at addr 0xc0 i2c-bus bt878 #1 [sw]
> bttv: readee error
> bttv1: using tuner=2
> tuner: type set to 2 (Philips NTSC (FI1236,FM1236 and
> compatibles)) by bt878 #1 [sw]
> bttv1: i2c: checking for MSP34xx @ 0x80... not found
> bttv1: i2c: checking for TDA9875 @ 0xb0... not found
> bttv1: i2c: checking for TDA7432 @ 0x8a... not found
> bttv1: registered device video1
> bttv1: registered device vbi1
> bttv1: registered device radio1
> --------------------- End Dmesg --------------------
> ===================== lspci -v =====================
> 0000:01:07.0 Multimedia video controller: Brooktree
> Corporation Bt878 Video Capture (rev 11)
>         Control: I/O- Mem+ BusMaster+ SpecCycle-
> MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr-
> DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 32 (4000ns min, 10000ns max)
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at de000000 (32-bit,
> prefetchable) [size=4K]
>         Capabilities: [44] Vital Product Data
>         Capabilities: [4c] Power Management version 2
>                 Flags: PMEClk- DSI+ D1- D2-
> AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0
> PME-
>
> 0000:01:07.1 Multimedia controller: Brooktree
> Corporation Bt878 Audio Capture (rev 11)
>         Control: I/O- Mem+ BusMaster+ SpecCycle-
> MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr-
> DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 32 (1000ns min, 63750ns max)
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at de001000 (32-bit,
> prefetchable) [size=4K]
>         Capabilities: [44] Vital Product Data
>         Capabilities: [4c] Power Management version 2
>                 Flags: PMEClk- DSI+ D1- D2-
> AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0
> PME-
>
> 0000:01:08.0 Multimedia video controller: Brooktree
> Corporation Bt878 Video Capture (rev 11)
>         Control: I/O- Mem+ BusMaster+ SpecCycle-
> MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr-
> DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 32 (4000ns min, 10000ns max)
>         Interrupt: pin A routed to IRQ 17
>         Region 0: Memory at de002000 (32-bit,
> prefetchable) [size=4K]
>         Capabilities: [44] Vital Product Data
>         Capabilities: [4c] Power Management version 2
>                 Flags: PMEClk- DSI+ D1- D2-
> AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0
> PME-
>
> 0000:01:08.1 Multimedia controller: Brooktree
> Corporation Bt878 Audio Capture (rev 11)
>         Control: I/O- Mem+ BusMaster+ SpecCycle-
> MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr-
> DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 32 (1000ns min, 63750ns max)
>         Interrupt: pin A routed to IRQ 17
>         Region 0: Memory at de003000 (32-bit,
> prefetchable) [size=4K]
>         Capabilities: [44] Vital Product Data
>         Capabilities: [4c] Power Management version 2
>                 Flags: PMEClk- DSI+ D1- D2-
> AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0
> PME-
> =================== end lspci -v ===================
>
> =====
> Hans W. Uhlig
> deathguard@yahoo.com
> http://purple.worldforge.org/~huhlig
> "Life is a Long and lonely road, Bring a friend"
>
> GPG Fingerprint : 2470 6619 6156 9A0E 577E E7B1 D2BB C9BA 07C0 C7BF
> GPG Public key  : http://purple.worldforge.org/~huhlig/deathguard.asc
>
>
>
>
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>

-- 
Mark K. Kim
AIM: markus kimius
Homepage: http://www.cbreak.org/
Xanga: http://www.xanga.com/vindaci
Friendster: http://www.friendster.com/user.php?uid=13046
PGP key fingerprint: 7324 BACA 53AD E504 A76E  5167 6822 94F0 F298 5DCE
PGP key available on the homepage
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