On 06/11/2014 09:43 PM, Scott Doty wrote: > On 06/11/2014 01:24 AM, Hans Verkuil wrote: >> On 06/03/14 03:23, Scott Doty wrote: >>> Hello Mr. Hans and mailing list, >>> >>> In a nutshell, I'm having some hdpvr trouble: >>> >>> I'm using vlc to view the stream. Kernel 3.9.11 works pretty well, >>> including giving me AC3 5.1 audio from the optical input to the >>> Hauppauge device. The only problem I've run across is the device >>> hanging when I change channels, but I've learned to live with that. >>> (Though naturally it would be nice to fix. :) ) >>> >>> However, every kernel I've tried after 3.9.11 seems to have trouble with >>> the audio. I get silence, and pulseaudio reports there is only stereo. >>> I've taken a couple of of snapshots of pavucontrol so you can see what I >>> mean: >>> >>> http://imgur.com/a/SIwc7 >>> >>> I even tried a git bisect to try to narrow down where things went awry, >>> but ran out of time to pursue the question. But as far as I can tell, >>> 3.9.11 is as far as I can go before my system won't use the device properly. >>> >>> I see the conversation in the archives from around the middle of May, >>> where Hans was working with Ryley and Keith, but I'm not sure if I >>> should apply that patch or not. I would love to make this work, >>> including submitting a patch if someone could outline where the problem >>> might be. >>> >>> Thank you in advance for any help you can provide, and please let me >>> know if I can send any more information. :) >> You can certainly try this patch: >> >> https://patchwork.linuxtv.org/patch/23890/ >> >> Nobody else reported audio problems other than the issue this patch tries >> to resolve. However, that problem most likely has been with hdpvr since >> the very beginning. >> >> There were some major changes made to the driver in 3.10, so that makes me >> suspect that something might have broken. Odd though that I didn't see any >> reports about that. >> >> Keith, Ryley, if you run v4l2-ctl -D, what is the version number that is >> reported? >> >> If it is >= 3.10, then can you test with vlc as well? > > Just tried the patch with 3.14.5, and it didn't solve the problem. > > I'm not sure what's different about my system than other folks', unless > they aren't using the optical input? > > Indeed, it acts just like the driver isn't properly honoring > "default_audio_input=2". (For S/PDIF). Thinking that might be a clue, > I hooked up stereo through the RCA jacks. With "default_audio_input=2", > I did hear some crackling sounds -- but nothing intelligible, and I'm > having a hard time reproducing that. With "default_audio_input=0", I > get clear stereo sound from the RCA jacks. Ah, you never mentioned that you used the default_audio_input module option. I looked at that and that did indeed break in 3.10. You probably need to do 'v4l2-ctl -c audio_encoding=4'. In 3.9 selecting default_audio_input=2 would also switch to AC3 audio encoding, but in 3.10 that is reset a bit later to AAC. But by selecting it manually it should work again. Let me know if I am correct and if so, then I'll make a patch for this to fix this behavior. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
