Re: em2820, Tena TNF-9533 and V4L

["Markus Rechberger" <mrechberger@xxxxxxxxx>]

On Sun, Aug 31, 2008 at 8:26 PM, Lee Alkureishi
<lee_alkureishi@xxxxxxxxxxx> wrote:
>
> Hi all,
>
> Hoping someone on this list can help me with this frustrating problem:
>
> I'm running Mythbuntu 8.04, fully updated. I'm trying to set up a USB TV tuner box, and have made progress but haven't quite got it working.
>
> The USB box is a Kworld PVR TV 2800 RF. It uses a Empia em2820 chipset, and a Tena TNF-9533-D/IF tuner. Other chips I found under the casing are:
> RM-KUB03 04AEAAC6, HEF4052BT, TEA5767, SAA7113H.
>
> The PCB has the following printed on it: EM2800TV_KW Ver:F
>
> I followed the instructions to install v4l using mercurial, and have got it to the point where dmesg shows that the card is recognised and initialised:
> ------
> dmesg:
> [ 1844.847318] usb 5-1: new high speed USB device using ehci_hcd and address 3
> [ 1844.979744] usb 5-1: configuration #1 chosen from 1 choice
> [ 1844.980718] em28xx new video device (eb1a:2820): interface 0, class 255
> [ 1844.980727] em28xx: device is attached to a USB 2.0 bus
> [ 1844.980730] em28xx: you're using the experimental/unstable tree from mcentral.de
> [ 1844.980732] em28xx: there's also a stable tree available but which is limited to
> [ 1844.980734] em28xx: linux <=2.6.19.2
> [ 1844.980736] em28xx: it's fine to use this driver but keep in mind that it will move
> [ 1844.980738] em28xx: to http://mcentral.de/hg/~mrec/v4l-dvb-kernel as soon as it's
> [ 1844.980740] em28xx: proved to be stable
> [ 1844.980743] em28xx #0: Alternate settings: 8
> [ 1844.980746] em28xx #0: Alternate setting 0, max size= 0
> [ 1844.980748] em28xx #0: Alternate setting 1, max size= 1024
> [ 1844.980750] em28xx #0: Alternate setting 2, max size= 1448
> [ 1844.980752] em28xx #0: Alternate setting 3, max size= 2048
> [ 1844.980754] em28xx #0: Alternate setting 4, max size= 2304
> [ 1844.980756] em28xx #0: Alternate setting 5, max size= 2580
> [ 1844.980758] em28xx #0: Alternate setting 6, max size= 2892
> [ 1844.980760] em28xx #0: Alternate setting 7, max size= 3072
> [ 1845.271190] tuner 1-0060: TEA5767 detected.
> [ 1845.271199] tuner 1-0060: chip found @ 0xc0 (em28xx #0)
> [ 1845.271254] attach inform (default): detected I2C address c0
> [ 1845.271260] tuner 0x60: Configuration acknowledged
> [ 1845.271266] tuner 1-0060: type set to 61 (Tena TNF9533-D/IF/TNF9533-B/DF)
> [ 1845.272189] tuner 1-0061: chip found @ 0xc2 (em28xx #0)
> [ 1845.272215] attach inform (default): detected I2C address c2
> [ 1845.272219] tuner 0x61: Configuration acknowledged
> [ 1845.272223] tuner 1-0061: type set to 61 (Tena TNF9533-D/IF/TNF9533-B/DF)
> [ 1845.302962] saa7115 1-0025: saa7113 found (1f7113d0e100000) @ 0x4a (em28xx #0)
> [ 1845.332719] attach_inform: saa7113 detected.
> [ 1845.346159] em28xx #0: V4L2 device registered as /dev/video0
> [ 1845.346173] em28xx #0: Found Kworld PVR TV 2800 RF
> ----------
>

please don't use that driver, it'S not maintained anymore either.

can you run:

$ apt-get install --reinstall linux-image-`uname -r`-generic

for restoring your kernel?

You should safely be able to compile the latest em28xx driver or grab
debian packages for it (what does uname -r show up?)

$ hg clone http://mcentral.de/hg/~mrec/em28xx-new
$ cd em28xx-new
$ ./build.sh build
$ ./build.sh install

there's also em28xx at mcentral.de available which has alot
subscribers who have em28xx based devices, it only deals about Empia
based devices and appilcations + support for those devices only.

Markus

> (I had to manally tell modprobe to set the card type (18) and tuner type (61), as it does not have an EPROM. Took me forever to figure that out!
>
> The problem arises when I try to do anything with it, though: I've tried a few programs, including mythTV, tvtime and xawtv. I can't find a way to select the TUNER as the input source. The only options are "composite1" or "s-video1". I've got a cheap antenna attached to the antenna connector, and a DTV set-top box attached to the composite input. I can't seem to get any sort of picture to come up on either input, though... Tvtime just gives a black screen, and lets me cycle between composite/s-video. MythTV just dumps me back to the main menu when I try to watch TV. Scanning for channels brings up nothing in Myth setup.
>
> I tried tvtime-scanner, but it fails:
>
> leeko@leeko-media:~$ tvtime-scanner &
> Reading configuration from /etc/tvtime/tvtime.xml
> Scanning using TV standard NTSC.
> [1] 6918
> leeko@leeko-media:~$
>    No tuner found on input 0.  If you have a tuner, please
>    select a different input using --input=<num>.
> [1]+  Exit 1                  tvtime-scanner
>
> I tried cycling through input=1 through 4, but they didn't work either (2 through 4 give an error about the card not being able to set its input).
>
> Am I doing something wrong? Surely I should see an option to choose the tuner as an input? As far as I can tell, it looks like it should be working!
>
> The only thing I can think of, is that the tuner may actually have originated outside the USA (i.e. the UK). Would that stop it from working with NTSC channels? And even so, should the composite input not still work? (And why can't I even select the tuner!?).
>
> If I do "ls /dev/video*", the only entry is /dev/video0.
>
> Thanks in advance for ANY help you can offer. This is driving me nuts! I've been learning as I go along, but I've hit a brick wall now :(
>
> Best regards,
>
> Lee
>
>
> lee_alkureishi@xxxxxxxxxxx
>
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