SMSL M8 Dac Issues

[synologic]

Purchased the SMSL M8 Dac to use with Runeaudio + Cubietruck (this was selected due to the fact it can be easily battery powered by a lipo battery).

I can play almost anything with it, except 44.1 Khz FLAC files (mp3 works fine). All i get is some pops and clicks.

Had almost similar issue with Volumio, but that was solved by using dwc_otg.fiq_fsm_mask=0x3 in the commandline.txt

Any suggestions ? I really don't want to use Volumio ...

[hondagx35]

[synologic]

Here's the output you requested

16/44.1 Khz FLAC:
[root@runeaudio ~]# cat /proc/asound/x20/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 5513
buffer_size: 22050

16/44.1 Khz MP3:
[root@runeaudio ~]# cat /proc/asound/x20/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 5513
buffer_size: 22050

seems to get over-sampled to 24 bit.


24/192 FLAC:
[root@runeaudio ~]# cat /proc/asound/x20/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 24000
buffer_size: 96000

DSD64:
[root@runeaudio ~]# cat /proc/asound/x20/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 176400 (176400/1)
period_size: 22050
buffer_size: 88200

DSD128:
[root@runeaudio ~]# cat /proc/asound/x20/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 352800 (352800/1)
period_size: 43691
buffer_size: 174762


Debug output at http://pastebin.com/G5k0URLk

Also, the hw mixer control is wrongfully placed in mpd.conf as "Master" while there's no Master line for the M8

Hope that helps

[hondagx35]

[synologic]

[synologic]

Just want to add that after a reboot (actually wrote Rune to nand) volume control works fine

[hondagx35]

[synologic]

Everything else plays.

I have posted hwinfo on all modes.