[linux-dvb] ADS PTV 305 sound issues

M A hoolahoous at yahoo.com
Wed Nov 21 21:34:22 CET 2007


Thanks for suggestion. I will join video4linux-list.

You said

> However, cx88-alsa is supported too.

What does that mean ? (Sorry I am  not an expert in
linux). My dmesg output shows something about
cx88-alsa.

For now I don't care about FM tuner (I guess that's
what you mean by Radio and mike's warning). I am more
interested in getting my TV working with sound.

<hermann-pitton at arcor.de>
> CC: linux-dvb at linuxtv.org
> To: M A <hoolahoous at yahoo.com>
> Date: Tue, 20 Nov 2007 23:09:50 +0100
> Subject: Re: [linux-dvb] ADS PTV 305 sound issues
> 
> Hi, M A!
> 
> you might be better off on the video4linux-list to
> meet people with such
> cards.
> 
> Am Montag, den 19.11.2007, 20:57 -0800 schrieb M A:
> > I have a fedora 5 box running fedora 5 (kernel 
> 2.6.18-1.2257.fc5) and mythtv.
> > I recently got a ADS PTV 305 tv tuner card (as
> part of ADS MCE 3000 media kit) which I installed on
> my computer.
> > I am able to get the picture (there is a
> crossweave like patter though) but no sound.
> > So my questions are :
> > 
> > 1) I can not get sound working on it 
> > - Do I need to attach a audio cable from some
> jumper to motherboard (I have 
> > onboard audio). ? Will 'cd in' port work or I need
> to install a separate sound 
> > card which has 'aux in'. I tried v4l2-ctl -d 1 
> > -f 61.25 --set-ctrl=mute=0 command but still can't
> get the sound (without 
> > cable).
> 
> We have reports that analog sound works connected
> from J3 on the board.
> If to CD-in or AUX-in doesn't make a difference,
> except for the mixer
> controls.
> 
> However, cx88-alsa is supported too.
> 
> > 2) Any way to get better picture ? This card is
> supposed to have hardware encoding (??) but my cpu
> usage (1.6Ghz intel with 512 MB RAM) is about 50%
> when watching live TV. Most of it is from
> mythbackend. Is it actually using hardware encoding
> ?
> 
> Better picture, this goes on since years, but to
> adjust the minor controls is all.
> 
> On analog video, which has by far the highest
> throughput, it depends on
> formats, size, deinterlacing etc. You have to know
> what you are doing.
> 
> The mpeg encoder needs firmware.
> 
> If you start a simple TV app on /dev/video0 and then
> "cat /dev/video1 >
> my_high_load_;).mpg, you should see the difference.
> 
> The 2.6.18 was a good kernel, but you might consider
> to come a little
> bit up, the guys have been working on it. If trying
> to use the v4l-dvb
> master mercurial, take Mike's current warnings into
> account for that
> tuner.
> 
> The radio likely doesn't work yet, can't tell for
> the other analog
> inputs offhand.
> 
> Hermann
> 
> > 
> > Here is my dmesg output
> > 
> > 
> > [root at marut ~]# dmesg | grep cx
> > cx2388x alsa driver version 0.0.6 loaded
> > CORE cx88[0]: subsystem: 1421:0305, board: KWorld
> HardwareMpegTV XPert [card=45,insmod option]
> > cx2388x v4l2 driver version 0.0.6 loaded
> > cx88[0]/1: CX88x/0: ALSA support for cx2388x
> boards
> > cx88[0]/0: found at 0000:02:0a.0, rev: 5, irq:
> 177, latency: 32, mmio: 0xdc000000
> > tuner 1-004b: chip found @ 0x96 (cx88[0])
> > cx88[0]/0: registered device video0 [v4l2]
> > cx88[0]/0: registered device vbi0
> > cx88[0]/0: registered device radio0
> > cx2388x blackbird driver version 0.0.6 loaded
> > cx88[0]/2: found at 0000:02:0a.2, rev: 5, irq:
> 177, latency: 32, mmio: 0xde000000
> > cx88[0]/2: cx23416 based mpeg encoder (blackbird
> reference design)
> > cx88[0]/2: registered device video1 [mpeg]
> > cx2388x dvb driver version 0.0.6 loaded
> > 
> > 
> > 
> > [root at marut ~]# dmesg | grep tuner
> > TV tuner 54 at 0x1fe, Radio tuner -1 at 0x1fe
> > tuner 1-004b: chip found @ 0x96 (cx88[0])
> > tuner 1-004b: setting tuner address to 61
> > tuner 1-004b: type set to tda8290+75
> > 
> > 
> > 
> > Can anyone help ? Will really appreciate any
> help/pointer.
> > 
> > Regards
> > M A
> > 


      ____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs



More information about the linux-dvb mailing list