I actually saw this with the last release, but waited to verify that it was still an issue on the latest, and it is. I am using hdmi for audio playback and it plays perfectly for a period of time, then suddenly becomes very noisy with a buzzing or machine-gun noise. The period of time it takes for this to happen is very predictable. When I am playing 44.1khz flac files, it will play for just about 50 minutes before it starts the buzzing. If I play 96kHz flac, it plays about 23 minutes. Notice that 50 x 44k/96k = 23 minutes. It is almost like it plays a certain number of samples before it freaks out. Once it starts buzzing, it will continue buzzing, even if I stop the song and start it again. A number of things will stop the buzzing and "reset the clock" so that it is fine for another 50 or 23 minutes: Rebooting the Wandboard. Restarting the Squeezelite process. Switching the sample rate; switching from playing an album at 96k to one at 44.1k or vice-versa. Or maybe strangest of all... unplugging and re-plugging the hdmi cable. Or I can just switch inputs on the sound bar to a different input and back again.
This happens when using my Yamaha YSP-3000 sound bar which supports all of the audio sample rates. Just to be sure it wasn't something weird with the sound bar, I also tried it direct into my Panasonic HDTV. It doesn't support 96k bit rates, but at 44.1k it acted the same as the sound bar. I have tried some different ALSA settings (although certainly not all): OPTIONS="-n SqueezeliteWAND -m 00:1f:7b:b2:02:85 -a 40::16: -o hw:CARD=imxhdmisoc -d all=debug -f /var/log/squeezelite/squeezelite.log" Nothing seemed to make a difference. Since the size of the log file at the time that it starts buzzing is the same if playing 96k or 44.1k files (about 194KiB), I also tried turning off the logging, but that didn't matter either. I don't see anything wrong in the squeezelite log. It just seems to merrily play along, blissfully unaware that the music isn't right anymore. I don't know what to make of this. Obviously if I am the only one interested in playing through hdmi at the moment, don't let this interfere with the other work going on. I have no pressing need to get this working right away, I am mainly trying to contribute to the testing. My setup: I am running the wandboard headless. I plug the hdmi into my sound bar. The audio plays through the sound bar, and the login screen is seen on the TV. I shut off the TV to keep from burning in the image, although I have left it on and it doesn't affect the problem. I am running wireless, although I also tried it through the wired ethernet with no change. I only play flac files. 96kHz/24 bit or 44.1kHz/16 bit. I've done extensive web searching and don't see anything quite like this being reported. I do see some vaguely similar issues with pulseaudio, and have accumulated a number of pages with possible fixes that I will look at more this weekend. Is pulseaudio even active? I don't see any signs of it. Terry ------------------------------------------------------------------------ TerryS's Profile: http://forums.slimdevices.com/member.php?userid=40835 View this thread: http://forums.slimdevices.com/showthread.php?t=98190 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
