Hi Andy:
Thank you! That was what I was looking for. I have the card working now by
forcing the tuner type to 71 (TUNER_XC2028). I have not had the opportunity
yet to peel back the sticker and see what's stamped on the tuner. If I see
anything different when I do get to it, I'll let you know.
If anyone is interested, I sped up the process of trying each tuner value
with a small shell script that tested each tuner ID in turn. While I ran it,
I watched the output to see which ones I got signal greater than 0% with --
which I did with three tuners: 54 (TUNER_PHILIPS_TDA8290), 71, and 83
(TUNER_NXP_TDA18271). Then, for each of those three, I reloaded the cx18
module, forcing the tuner to the appropriate value, and tried using the
mplayer / ivtv-tune combination described below to see if there was anything
other than static on the screen. When I tried the XC2028, bingo, there was
the weather man, just like normal people have on *their* TV's!
Here is the script. Change CHANNEL, FREQUENCY_TABLE, and VIDEO_DEVICE to
fit your setup, if necessary. Note that I needed to modprobe -r cx18_alsa
before removing the cx18 module, I am not sure if that applies to everyone
or not.
#!/bin/bash
VIDEO_DEVICE=/dev/video0
CHANNEL=3
FREQUENCY_TABLE=us-bcast
let start=1
let end=84
for ((i=$start; i <= $end; i++))
do
echo -n "Tuner type $i: "
modprobe -r cx18_alsa
modprobe -r cx18
modprobe cx18 tuner=$i debug=3
ivtv-tune -t $FREQUENCY_TABLE -c $CHANNEL -d $VIDEO_DEVICE > /dev/null
v4l2-ctl -T -d $VIDEO_DEVICE | grep 'Signal strength'
done
Unfortunately, at the end of the day, I think I discovered that the problem
I was trying to solve by replacing my PVR 150, which is that I can watch
live TV via the STB's analog cable out, but recordings off that input fail
and crash the MythTV frontend about 98% of the time, was not a problem with
the card. It still happens with the 1600. But, as I can see live TV, and the
cards have different chips and drivers, I am going to assume that this most
likely isn't a driver problem. Correct?
Thanks again for your help, it is tremendously appreciated!!!
Larry
On Mon, Jun 7, 2010 at 12:08 AM, Andy Walls <[email protected]> wrote:
> On Sun, 2010-06-06 at 22:38 -0400, Larry Glenn wrote:
> > Hello:
> >
> > I recently purchased a Hauppauge PVR-1600, which I intend to use in a
> > MythTV setup as an analog capture card, connected to "cable out" on my
> > cable STB. Despite my best efforts, all I am able to see from the
> > card's analog input is static, both in MythTV and reading /dev/video0
> > with mplayer. the clear QAM half of the card works fine -- it grabs
> > all the clear digital channels my provider has to offer.
>
> > Absolutely nothing happens when I change channels regardless of
> > whether it's on the STB, or using ivtv-tune, and regardless of
> > frequency table I use in ivtv-tune -- the static pattern shows no sign
> > that anything has just happened, almost as if the tuner isn't doing
> > any tuning.
>
> That appears to be the case. See below...
>
>
> > I have confirmed that the STB's cable out is working, using a PVR
> > 150.
> >
> > I noticed the following in the output of dmesg -- note the
> > triple-asterisk'd lines:
> >
> > [ 27.136529] tveeprom 1-0050: Hauppauge model 74041, rev C6G8,
> > serial# 7155635
> > [ 27.136534] tveeprom 1-0050: MAC address is 00:0d:fe:6d:2f:b3
> > *** [ 27.136537] tveeprom 1-0050: tuner model is unknown (idx 168,
> > type 4)
>
> Tuner index 168 is not in tveeprom.c :
>
>
> http://linuxtv.org/hg/v4l-dvb/file/24ea80f2631f/linux/drivers/media/video/tveeprom.c#l242
>
> so the cx18 driver doesn't know how to set it up or use it (tuner type 4
> is TUNER_ABSENT). I will try to contact Hauppauge and see if I can find
> out the details.
>
> In the meantime, if you carefully peel back the Hauppauge sticker from
> the analog tuner can, there may be a readable sticker underneath that
> has the tuner manufacturer/model/type.
>
> Or you can just guess. You can use the tuner= option when loading the
> cx18 module to force it to use a tuner type using the numbers in this
> list:
>
>
> http://linuxtv.org/hg/v4l-dvb/file/24ea80f2631f/linux/include/media/tuner.h#l29
>
> I would try the TCL_2002N (type 50) first, since the tuner on my non-FM
> radio HVR-1600 maps to that:
>
> # modprobe -r cx18
> # modprobe cx18 tuner=50 debug=3
>
>
> > [ 27.136540] tveeprom 1-0050: TV standards NTSC(M) (eeprom 0x08)
> > [ 27.136543] tveeprom 1-0050: audio processor is CX23418 (idx 38)
> > [ 27.136546] tveeprom 1-0050: decoder processor is CX23418 (idx 31)
> > [ 27.136549] tveeprom 1-0050: has no radio, has IR receiver, has IR
> > transmitter
> > [ 27.136552] cx18-0: Autodetected Hauppauge HVR-1600
> > *** [ 27.136554] cx18-0: tveeprom cannot autodetect tuner!
> > [ 27.136702] cx18-0: Simultaneous Digital and Analog TV capture
> > supported
> > [ 27.250445] IRQ 20/cx18-0: IRQF_DISABLED is not guaranteed on
> > shared IRQs
> > [ 27.261509] tuner 2-0043: chip found @ 0x86 (cx18 i2c driver #0-1)
> > [ 27.261603] tda9887 2-0043: creating new instance
> > [ 27.261606] tda9887 2-0043: tda988[5/6/7] found
> > [ 27.264659] tuner 2-0061: chip found @ 0xc2 (cx18 i2c driver #0-1)
>
> Hmm. The driver is also detecting a tda9887 chip which is usually found
> on tuners with FM radio. Maybe you should also try the
> TUNER_PHILIPS_FM1236_MK3 type 43 tuner as well:
>
> # modprobe -r cx18
> # modprobe cx18 tuner=50 debug=3
>
> > Could this mean that the tuner isn't working at all?
>
> That's right.
>
> > If so, is there a workaround?
>
> Forcing a tuner type with the tuner= module option.
>
> > Here is abbreviated output of v4l2-ctl --all -d /dev/video0; the full
> > thing can be seen here: http://pastebin.com/4jMqXXzd
>
> v4l2-ctl -d /dev/video0 --log-status
>
> is actually more useful as is the dmesg output.
>
>
> Regards,
> Andy
>
>
>
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