When the problem happened, and before disconnecting or restarting anything, I ran the DAC Diagnostics and saw this:
Mytek Digital Brooklyn DAC at usb-ci_hdrc.1-1.1.2, high speed : USB Audio
Playback:
Status: Stop
Interface 2
Altset 1
Format: S32_LE
Channels: 2
Endpoint: 1 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 2
Altset 2
Format: SPECIAL DSD_U32_BE
Channels: 2
Endpoint: 1 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Capture:
Status: Stop
Interface 1
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 2
Format: S32_LE DSD_U32_BE
Channels: 8
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 3
Format: S32_LE
Channels: 8
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 4
Format: SPECIAL
Channels: 2
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
no setup
amixer: Mixer hw:0 load error: Connection timed out
I then tried to disconnect and reconnect the USB cable and ran it again (with the same result after rebooting the mR):
No audio devices found. Attach a USB DAC to this system.
I power cycled the Brooklyn, restarted the playlist successfully, and ran the diagnostics again:
Mytek Digital Brooklyn DAC at usb-ci_hdrc.1-1.1.2, high speed : USB Audio
Playback:
Status: Running
Interface = 2
Altset = 1
Packet Size = 247
Momentary freq = 192000 Hz (0x18.0000)
Feedback Format = 16.16
Interface 2
Altset 1
Format: S32_LE
Channels: 2
Endpoint: 1 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 2
Altset 2
Format: SPECIAL DSD_U32_BE
Channels: 2
Endpoint: 1 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Capture:
Status: Stop
Interface 1
Altset 1
Format: S32_LE
Channels: 4
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 2
Format: S32_LE DSD_U32_BE
Channels: 8
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 3
Format: S32_LE
Channels: 8
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
Interface 1
Altset 4
Format: SPECIAL
Channels: 2
Endpoint: 1 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000
Data packet interval: 125 us
access: RW_INTERLEAVED
format: S32_LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 9600
buffer_size: 19200
amixer: Mixer hw:0 load error: Broken pipe
I have submitted a support request with Mytek, but let me know if there is anything you can suggest to address this on the mR side.
Note: I just realized that I have had the Brooklyn output set to BOTH (headphone + main) throughout this process. For now I have reverted the setting to AUTO and will see if this impacts the disconnection problem. I’ll report back here.
Update 1: The disconnection problem still happens with the output set to AUTO. I’m trying the output set to HP now.
Update 2: The disconnection problem still happens with the output set to HP.
Thanks,
Adeeb