Re: Ignored USB-audio implicit feedback in kernel 5.8rc3

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Dne 29. 06. 20 v 13:28 Pavel Hofman napsal(a):
> 
> Audio analyzer RTX6001 (XMOS-based) is using implicit feedback, yet the
> feedback is not used by the latest kernel 5.8 rc3 (i.e. already with the
> latest implicit-feedback patches).
> 
> Two analyzers on two different PCs are getting clicks in duplex-mode
> loobpack, one every 10 secs, the other one every 50 secs.
> 

I am sorry, correct stream0 for duplex operation (kernel 5.4, the same
behaviour as in 5.8-rc3):

RTX A/S RTX6001 USB Audio 2.0 at usb-0000:00:13.2-4, high speed : USB Audio

Playback:
  Status: Running
    Interface = 1
    Altset = 1
    Packet Size = 72
    Momentary freq = 48000 Hz (0x6.0000)
  Interface 1
    Altset 1
    Format: S32_LE
    Channels: 2
    Endpoint: 1 OUT (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 32
  Interface 1
    Altset 2
    Format: S32_LE
    Channels: 2
    Endpoint: 1 OUT (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 24
  Interface 1
    Altset 3
    Format: S16_LE
    Channels: 2
    Endpoint: 1 OUT (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 16

Capture:
  Status: Running
    Interface = 2
    Altset = 1
    Packet Size = 72
    Momentary freq = 48000 Hz (0x6.0000)
  Interface 2
    Altset 1
    Format: S32_LE
    Channels: 2
    Endpoint: 1 IN (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 32
  Interface 2
    Altset 2
    Format: S32_LE
    Channels: 2
    Endpoint: 1 IN (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 24
  Interface 2
    Altset 3
    Format: S16_LE
    Channels: 2
    Endpoint: 1 IN (ASYNC)
    Rates: 44100, 48000, 88200, 96000, 176400, 192000
    Data packet interval: 125 us
    Bits: 16

Thanks a lot.

Pavel.



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