hi all. i.m using a winfast cm8738 sound card with digital addon board. i.d like to use the digital output to pipe ac3 signals from the dvb-s sat board to my dd receiver.
i downloaded the cvs version of the alsa package. installed every- thing with "./cvscompile and make install". i can.t playback clear sound thru the digital output (eg. madplay /mp3/test.mp3). i have VERY bad high clipping distortions. sound is good when connected thru the analog line output. playback of the sound coming from the dvb-s cards spdif-out connected to J1 (spdif-in) of the soundcard works just fine. but only PCM of course. when i try to replay raw ac3 stream thur digital output i get the following output on the screen, and absolutely NO SOUND. (my dd receiver tells me that it gets NO INPUT.) [root@vdr izeman]# ac3dec -C /root/ac3test.ac3 Using PCM device 'iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2' AC3 Stream 48.0 KHz 448 kbps /alsa-kernel/core/pcm_native.c:1024: playback drain error (DMA or IRQ trouble?) *** comment: strg-c pressed ***** Aborted... ALSA lib pcm_hw.c:390:(snd_pcm_hw_drain) SNDRV_PCM_IOCTL_DRAIN failed: Input/output error ac3dec: pcm.c:655: snd_pcm_hw_free: Assertion `snd_pcm_state(pcm) == SND_PCM_STATE_SETUP || snd_pcm_state(pcm) == SND_PCM_STATE_PREPARED' failed. Aborted... ALSA lib pcm_hw.c:390:(snd_pcm_hw_drain) SNDRV_PCM_IOCTL_DRAIN failed: Input/output error ac3dec: pcm.c:655: snd_pcm_hw_free: Assertion `snd_pcm_state(pcm) == SND_PCM_STATE_SETUP || snd_pcm_state(pcm) == SND_PCM_STATE_PREPARED' failed. Aborted... **** comment: "killall -9 ac3dec" from another console ***** Killed my machine tries to play that file forever. of course no sound ever. i use rh6.2 and kernel 2.4.9-xfs i checked for dma or irq troubles but couldn.t find any. can anybody help please? after 15 hours of testing i.m a bit frustrated. ;) regards hannes! -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
