Hi. I've been experiencing audio drops on dvb streams that use ac3 audio (h264+ac3 hdtv streams) and occasionally mp2 audio (sdtv channels) . When the ac3 audio drops out, it usually recovers after a few seconds though sometimes it never does. When mp2 drops out, it almost never recovers. Retuning the channel always fixes the drop out. When this happens there's usually no interruption in the video so I question whether stream errors are causing the problem.

When a dropout occurs, I always see the following in my xine log: pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed (-32).

I (and others apparently) have been experiencing this problem for quite some time. I have read about and tried adding notsc to no kernel boot line, which has had no affect. Here's a clip from the most recent drop outs:

audio jump, diff=-90720 pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed (-32). audio_out: inserting 21713 0-frames to fill a gap of 40723 pts video_out: throwing away image with pts 176336725 because it's too old (diff : 10842). video_out: throwing away image with pts 176339939 because it's too old (diff : 16618). video jump 200 frames delivered, 0 frames skipped, 2 frames discarded video jump audio jump, diff=-103680 pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed (-32). audio_out: inserting 21233 0-frames to fill a gap of 39823 pts video_out: throwing away image with pts 183068800 because it's too old (diff : 6699). video jump video_out: throwing away image with pts 183071835 because it's too old (diff : 12728). pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed (-32). 200 frames delivered, 0 frames skipped, 2 frames discarded

Some system specs are: debian testing kernel 2.6.34.1 alsa-base 1.0.23+dfsg-1 alsa-utils 1.0.23-2 alsa drivers compiled from today's snapshot (2010-07-20).

in /etc/modprobe.d/alsa-base.conf: options snd-hda-intel enable_msi=1 probe_mask=0xffff,0xfff2

lsmod: snd_hda_codec_nvhdmi 9750 1 snd_hda_intel 14764 0 snd_hda_codec 48881 2 snd_hda_codec_nvhdmi,snd_hda_intel snd_hwdep 3566 1 snd_hda_codec snd_pcm 44172 2 snd_hda_intel,snd_hda_codec snd_timer 11991 1 snd_pcm snd 28664 6 snd_hda_codec_nvhdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer soundcore 548 1 snd snd_page_alloc 4669 2 snd_hda_intel,snd_pcm

I'd greatly appreciate any help in getting this problem worked out and hopefully solved once and for all. Thanks in advance for _anything_.

Best regards, Derek