Re: Kworld PlusTV HD PCI 120 (ATSC 120)

[Curt Blank <Curt.Blank@curtronics.com>]

Curt Blank wrote:
> Hi,
>
> Thanks yo the reply. I had read through all your posts from back in 
> February and did see you got it working. I've got a few questions.
>
> Vanessa Ezekowitz wrote:
>> On Thursday 18 September 2008 11:48:14 pm Curt Blank wrote:
>>  
>>> I'm trying to get this  card working  and I'm having some trouble and
>>> I'm not sure exactly where. I'm using the 2.6.26.5 kernel gen'd to
>>> include all the v4l support.
>>>     
>>
>> I don't know if that version of the kernel has the full driver or 
>> not, however, it would be a good idea to use the v4l-dvb repository 
>> instead, as that code is more up to date.
>>
>> Mauro, does any current kernel contain these drivers yet?  I've not 
>> been following v4l-dvb-->kernel merges.
>>   
> I looked at the cx88_cards.c code and I see it has the Kworld PlusTV 
> HD PCI 120 (ATSC 120) card listed in it. It looks to me it was 
> included since 2.6.26. I do have the v4l code fro the repository, I 
> was experimenting with using it in the 2.6.25.22 kernel but decided 
> 2.6.26.5 might be better. If I don't have any luck with you 
> suggestions and the 2.6.26.5 code I'll switch back to the repository 
> code.
>>  
>>> Using Kradio I can manually tune in a station  but the audio only comes
>>> out the Line Out jack on the card. Alsa is installed and working, I 
>>> can play CD's, listen to streaming music, KDE sound effects work, so it
>>> appears my sound subsystem is working. The alsa config in Kradio is set
>>> to what it determined and it appears to match the device as far as
>>> things go.
>>>     
>>   The first thing that comes to mind here is that Kradio chose the 
>> wrong audio device but made it look like it chose correctly.  I seem 
>> to recall it doing the same thing on my box as well.  This card 
>> provides audio via a digital stream, and the drivers put that stream 
>> on /dev/dsp1, so you must chose that as your capture card/device, and 
>> set the playback card/device to use your usual sound card.
>>   
> So this card follows the oss format instead of the alas format? I 
> wasn't sure which one to use. I switched Kradio's V4L Config Options 
> to use OSS and tried both /dev/dsp and /dev/dsp1 and there is no 
> sound. I had experimented with this before also.
>> Also, the current version of the driver no longer provides or 
>> requires the cx88-alsa module (it has apparently been merged with 
>> other parts of the driver).  Don't try to load this module, as it 
>> will probably cause a bunch of errors and break things.  I've just 
>> updated the KW120 article to reflect this change in driver behavior 
>> (and to fix some other errors on my part).
>>  
>>> When I try to scan for stations it doesn't find any but I can tune 
>>> to any local station and get it.
>>>
>>> I also can't get the video (HDTV) to work either. When it starts up 
>>> I get
>>> a:
>>>     
>>
>> At the present, you can't load both the digital- and analog-mode 
>> drivers at the same time - this card uses a "hybrid" tuner, which the 
>> drivers can't quite deal with properly yet (this is being worked 
>> on).  The end result is that neither mode will work at all, or may 
>> work only intermittently (last time I tried, the result was 
>> unpredictable).
>>
>> You must select one more or the other, and you must reboot the 
>> computer (actually, a hard power-off is better) when switching modes.
>>
>> Basically, it boils down to blacklisting several modules and then 
>> loading either the cx8800 or cx88-dvb module (for analog or digital, 
>> respectively).
>>   
> I did experiment with the blacklisting and I did notice that I could 
> listen to the radio (through the cards line out) when the cx8800 was 
> loaded without the cx88-alsa module loaded. At the moment I have 
> blacklisted everything, powered down and now only have the cx8800 
> module loaded.
>>    
>>> I also can't get the video (HDTV) to work either. When it starts up 
>>> I get a:
>>> [...]
>>> When I run kdetv in a terminal window I see this:
>>>     
>>
>> [errors snipped]
>>
>> Last time I tried to use it, KDETV only worked with analog video/TV 
>> and other v4l capture devices.  For digital TV, you need to use 
>> something like Kaffeine/Xine, MythTV, etc.  Basically any video 
>> player that can read from a DVB device.
>>
>> Also note that KDETV, unless it's changed since I last looked, isn't 
>> aware of that separate digital stream for analog TV, so you probably 
>> won't get any audio from it.  Most of the other TV programs are like 
>> this also.  Kradio is aware of it, however, and worked fine for me 
>> last time I used it.
>>   
> I do have kaffine and xine, I will try that when I get a chance later 
> today.
>>  
>>> I've read the Wiki at http://www.linuxtv.org including the
>>> http://www.linuxtv.org/wiki/index.php/KWorld_ATSC_120 info. I also
>>> downloaded the archived list messages back to January 2007 and looked
>>> through them for help.
>>>     
>>
>> I know it sounds a little Windows-ish, but since the driver is still 
>> experimental, and the ATSC 120 is kinda finicky, a reboot is the 
>> first thing to do here, just to get the card back into a predictable 
>> state.  Get the blacklist into place before you do that, check after 
>> the reboot to make sure that worked, then try just the analog mode.  
>> One that works, reboot again, enable digital mode, and scan for 
>> channels with dvbscan or whatever your distro calls it.
>>
>> Stuart and I wrote most of what's in the ATSC 120 info page, so if it 
>> didn't work for you, I'd like to see if we can figure out what went 
>> wrong, so I can update the page to address the problem.  I'm kinda 
>> partial to the idea of seeing this card working fully for those who 
>> have one. :-)
>>   
> Thanks. I'll work on all your suggestions more in depth when I have 
> more time later today and over the weekend and report back. The first 
> thing I'd like to get working as a stepping stone is the sound not 
> using the cards line out. I've been trying this in a box using that 
> MSI MB, it's going to be used in different box with an Asus m3a78-em 
> MB that should be arriving today so I will probably move to that. I've 
> had some issues with MSI MB's and media cards (video) in the last year 
> where they did not work and that's why I've switched back to Asus.
>

I've got the new computer built, with the 2.6.26.5 kernel, v4l not gen'd
in and using the latest from the repository.

Using Kradio I still can only listen to it via the Line Out on the 120's
board.

When I run kaffeine I get a pop up window with this:

No plugin found to handle this resource (/dev/video)

17:59:33: xine: couldn't find demux for >file:///dev/video<

17:59:33: xine: found input plugin : file input plugin


When I run xawtv I get this:

# xawtv
This is xawtv-3.95, running on Linux/x86_64 (2.6.26.5-touch)
xinerama 0: 1024x768+0+0
/dev/video0 [v4l2]: no overlay support
v4l-conf had some trouble, trying to continue anyway
ioctl: VIDIOC_REQBUFS(count=2;type=VIDEO_CAPTURE;memory=MMAP): Success
ioctl: VIDIOC_REQBUFS(count=2;type=VIDEO_CAPTURE;memory=MMAP): Resource 
temporarily unavailable


And I still get the "Unable to grab video." pop up form kdetv.

Ideas? Am I missing something?

I blacklisted cx8800, cx8802, cx88-alsa, & cx88-dvb on boot, then moved
the blacklist file then only modprobed cx8800. That and cx88xx are the
only ones loaded.

I have this in my modprobe.d/tv file:

alias char-major-81 videodev
options i2c-algo-bit bit_test=1

alias char-major-81-0 cx8800
alias char-major-81-1 off
alias char-major-81-2 off
alias char-major-81-3 off

Thanks.


--
video4linux-list mailing list
Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/video4linux-list