[linux-dvb] ADS PTV 305 sound issues

M A hoolahoous at yahoo.com
Tue Nov 20 05:57:18 CET 2007

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 

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 ?

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.


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