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+---- Thread: AC3/DTS "cuts" SPDIF signal on Zotac ION N330 (/showthread.php?tid=59085)
AC3/DTS "cuts" SPDIF signal on Zotac ION N330 - jbetzer - 2009-10-04 17:35
Hi there
First of all, let me say, I am a total linux beginner, so if you can help me with the following problem, please be as specific as possible
I've recently bought a Zotac ION 330, I have been using windows XBMC for quite some time now on my old HTPC, but since there is no support for GPU acceleration i had to change to linux (ubuntu).
With some help from my some of my linux experienced mates I was able to setup Ubuntu with XBMC and pretty much everything is running as it should
But I have run into a problem I havent been able to find a solution for on the forums nor on the wiki.
Problem:
When playing AC3/DTS content, once in a while (every 5 min or so) the SPDIF signal cuts for <0.5 seconds and then resumes as it should. It is not a lot, but it is enough for me to notice and therefore: be annoyed by it.
I havent been able to reproduce this problem on 2ch MP3 audio content(PCM). Its only on AC3/DTS
My system spec is as follows:
Hardware: Zotac ION N330, 1 GB ram
Linux Distrobution: Ubuntu 9.04 - 2.6.28-15 Generic 32 bit - Up to date as of 2009-10-04(from the "uname -a" command)
Architecture: i686
Install Method: PPA
SVN Revision: 23321 (I have also tried with 23281, where the problem still is present)
Nvidia driver: 185 (From nvidia.com)
Sound: Updated to version 1.0.21 using the ALSA update script
Besides that, I have tried removing Pulse-Audio as well as only enabling the External audio (Realtek ALC662) in bios.
Any help will be much appreciated, I am a bit lost atm
- chrisism - 2009-10-16 19:45
Hi,
I've got the same problem. Dont know if it's only with ac3 or anything.
Also everytime I start a movie or music it takes some time (1 sec.) before the sound is turned on.
Doesn't matter if it goes over the hdmi or over the spdif?
Anyone yet?
- Ben8472 - 2009-10-24 10:11
i'm having the same issue since i upgraded my AMP, noticed it on dts movies, will try ac3 later. Every 75 seconds +-3
- frozenice - 2009-10-25 09:40
yesterday i have the same problem while watching a 1080p Movie over HDMI.
Every ~5-10 Min. the Audio Signal lost and returns. (~1second)
Bug in Xbmc?
Thanks!
(HW: AsRock ION 330)
- Ben8472 - 2009-10-25 12:51
i reaquired my old AMP to see if the problem is there too, i will have time later today to test it out.
what AMP are you guys using?
mine is a yamaha 465, i read on the internet that it might have a bad error correction if the ac3/dts stream jitters during playback.
- frozenice - 2009-10-25 13:13
Sony STR-DG820, but i dont think that can be a problem with the AMP because my HDX1000 and WDTV plays all stuff without these audio "lags".
I think that must be an Bug in Linux/Xbmc/Alsa I don't know.
Hope anybody can help us
- poserdonut - 2009-10-25 13:16
I have the same problem on my Asrock ion 330.
- vikjon0 - 2009-10-25 13:20
I am not sure it fix this problem to 100% but you could try to use a .asoundrc file with dmixer. There is a sample in another thread discussing this problem.
I used that file to fix the problem with shutter/spikes when opening e.g. a dvd iso using spdif with passthrough to the amp. This problem was fixed.
- Ben8472 - 2009-10-25 13:37
@vikjon0: i tried to find the thread you are refering to, can you please point us at the right one?
one thing i found out, if playing a dts movie the @24p the sound drop occours every 115 seconds +-2
the sound drops on DTS is more noticeable (sound really gone for a fraction of second), on ac3 its even less fraction of a second so not as much noticeable.
can you confirm that?
- frozenice - 2009-10-25 14:05
For me its very different, not every 115 seconds.
I try now the reproduce these Error and take a look in the xbmc.log file in the /home/<username>/.xbmc/temp/ directory.
What says your xbmc.log file, after the error comes up