I've got Squeezelite and LMS installed on a Cubox-i, on a headless Archlinux. Output is to a USB DragonFly DAC, which Squeezelite recognizes. It sounds wonderful, EXCEPT for a periodic click/pop/crackle. This is Squeezelite 1.5 Linux ALSA armv6 (squeezelite-armv6), LMS (logitechmediaserver-7.8.0-1-armv7h), Cubox-i4 Pro, Archlinux (ArchLinuxARM-imx6-cubox-latest - 3.10.30-17-ARCH), and the DragonFly is v1.2.
All the music I've tested with has been 16 bit, 44.1 kHz FLAC. By adjusting Squeezelite's start parameters I've got the noise down to around once every 30 seconds or so. The best start parameters so far appear to be: -o hw:CARD=2,0 -n ArchSqueeze -s 192.168.1.194 -r 96000 -a 16384:4:24_3:1 -b 60000:200000 -p 90 And it seems to have improved by running: # modprobe snd-usb-audio nrpacks=1 I've tried quite a number of changes to the startup prarameters. Best sound appears to be when forcing both mmap use and 24_3 sample format. No other sample formats appear to work at all. I got the buffer time and period count from running speaker-test. I do not think this is just a Squeezelite problem - per se - because Volumio has the same problem (occasional click/pop/crackle) with this hardware (Cubox-i, DragonFly). I'm hoping someone on this forum can assist me setting Squeezelite parameters that will eliminate the problem. Or provide other insight into diagnosis... Interestingly, when running Volumio the problem goes away if I set Volumio to oversample at 96000 kHz. So to check oversampling behaviour with Squeezelite, I installed a hard float version that should have had oversampling enabled (Squeezelite 1.5 Linux ALSA armv6hf- squeezelite-armv6hf), but the "-u X -r 96000" options did not change anything. Though the DragonFly indicated that it was playing back at 44100 kHz, not the expected 96000 kHz. However, getting resampling to work is really just a band-aid. What I really want is for the click/crackle/pop to stop when playing back FLACs in their native format. I do not believe the problem is purely with the Dragonfly - nor with Archlinux, nor LMS, nor the Cubox-i - because they all work together to play FLACs perfectly (at 44100 kHz) on my iPhone through the i-Peng7 Squeezebox player app. So I suspect the problem is something like ALSA not playing nice with the DragonFly. Any ideas what this problem might be, and how to fix it? Sorry for the long post. Lots of info to share. Thanks in advance! ------------------------------------------------------------------------ scolley's Profile: http://forums.slimdevices.com/member.php?userid=62931 View this thread: http://forums.slimdevices.com/showthread.php?t=97046 _______________________________________________ unix mailing list unix@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/unix
