I recently bought one of these and have video but no audio.
# lsmod | grep cx231
cx231xx_alsa 7824 0
cx231xx 143824 1 cx231xx_alsa
cx2341x 16463 1 cx231xx
v4l2_common 3850 3 cx2341x,cx231xx,cx25840
videobuf_vmalloc 3975 1 cx231xx
videobuf_core 14607 2 cx231xx,videobuf_vmalloc
rc_core 11940 1 cx231xx
videodev 101700 6 cx2341x,cx231xx,cx25840,uvcvideo,v4l2_common,videobuf2_core
snd_pcm 71629 4 cx231xx_alsa,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
lsusb:
Bus 001 Device 006: ID 1f4d:0102 G-Tek Electronics Group
dmesg:
usb 1-1.1: new high-speed USB device number 7 using ehci-pci
cx231xx #0: New device Geniatech Inc. Video Capture @ 480 Mbps (1f4d:0102) with 5 interfaces
cx231xx #0: registering interface 1
cx231xx #0: Identified as Geniatech OTG102 (card=17)
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx25840 10-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0)
cx25840 10-0044: Firmware download size changed to 16 bytes max length
cx25840 10-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
cx231xx #0: cx231xx #0: v4l2 driver version 0.0.2
cx231xx #0: cx231xx_dif_set_standard: setStandard to ffffffff
cx231xx #0: video_mux : 0
cx231xx #0: do_mode_ctrl_overrides : 0xff
cx231xx #0: do_mode_ctrl_overrides PAL
cx231xx #0: cx231xx #0/0: registered device video1 [v4l2]
cx231xx #0: cx231xx #0/0: registered device vbi0
cx231xx #0: V4L2 device registered as video1 and vbi0
cx231xx #0: cx231xx-audio.c: probing for cx231xx non standard usbaudio
cx231xx #0: EndPoint Addr 0x83, Alternate settings: 3
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 28
cx231xx #0: Alternate setting 2, max size= 52
cx231xx #0: EndPoint Addr 0x84, Alternate settings: 5
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 184
cx231xx #0: Alternate setting 2, max size= 728
cx231xx #0: Alternate setting 3, max size= 2892
cx231xx #0: Alternate setting 4, max size= 1800
cx231xx #0: EndPoint Addr 0x85, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 512
cx231xx #0: EndPoint Addr 0x86, Alternate settings: 2
cx231xx #0: Alternate setting 0, max size= 512
cx231xx #0: Alternate setting 1, max size= 576
cx231xx #0: setPowerMode::mode = 48, No Change req.
cx231xx #0: cx231xx_stop_stream():: ep_mask = 8
I've followed the page here: http://www.linuxtv.org/wiki/index.php/OTG102
and everything seems to be in order, but mplayer reports no sound:
mplayer tv:// -tv driver=v4l2:device=/dev/video1:normid=8:alsa:adevice=hw.1:forceaudio:volume=80
Playing tv://.
TV file format detected.
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <olschewski@xxxxxxxxxxxxxxxx>
comment: first try, more to come ;-)
Selected device: Geniatech OTG102
Capabilities: video capture VBI capture device read/write streaming
supported norms: 0 = NTSC; 1 = NTSC-M; 2 = NTSC-M-JP; 3 = NTSC-M-KR; 4 = NTSC-443; 5 = PAL; 6 = PAL-BG; 7 = PAL-H; 8 = PAL-I; 9 = PAL-DK; 10 = PAL-M; 11 = PAL-N; 12 = PAL-Nc; 13 = PAL-60; 14 = SECAM; 15 = SECAM-B; 16 = SECAM-G; 17 = SECAM-H; 18 = SECAM-DK; 19 = SECAM-L; 20 = SECAM-Lc;
inputs: 0 = Composite1; 1 = S-Video;
Current input: 0
Current format: YUYV
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
Selected input hasn't got a tuner!
Opening video filter: [screenshot]
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
Movie-Aspect is undefined - no prescaling applied.
[swscaler @ 0x7f5bf3001da0] bicubic scaler, from yuyv422 to rgb24 using MMXEXT
VO: [xv] 720x576 => 720x576 Packed YUY2
Selected video codec: [rawyuy2] vfm: raw (RAW YUY2)
==========================================================================
Audio: no sound
Starting playback...
I'm not sure if I'm specifying the correct audio device. The command
in the wiki is using /dev/video0 whereas mine is /dev/video1. I've
tried other combinations of audio device numbers without any luck.
Neither aplay -l nor -L list the device, but it does show in alsamixer
when I press F6.
Any help greatly appreciated.
-Dave
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