Re: [alsa-devel] snd-bebob : from kernel 4.13 to 5.3.19 and .20

[Takashi Sakamoto <o-takashi@sakamocchi.jp>]

Hi,

On Wed, Oct 30, 2019 at 09:10:38AM +0100, Jean-Paul Argudo wrote:
> Hi there,
> 
> I wrote 1st this here: 
> https://github.com/takaswie/snd-firewire-improve/issues/25
> 
> But I think it was the bad place, sorry for that.
> 
> I think this ML is better?
> 
> My problem in one line:
> 
> I upgraded my Ubuntu Disco (kernel 4.13) to Ubuntu Eoan (kernel 5.3.19)
> and I can report my SaffireLE / Firewire doesnt work anymore, snd-bebob reports "discontinuity of CIP" on dmesg...
> 
> 
> At startup it lights green ok, but no sound is playable, then the
> lights turn orange (like it is when it's not working), I hear a "relay
> sound" (a electric clic of a relay), then, the Saffire LE disapears from the sound menu in Ubuntu sound menu.
> 
> I can see this in dmesg:
> 
> [   19.083583] snd-bebob fw1.0: Detect discontinuity of CIP: 10 50
> [   19.746665] snd-bebob fw1.0: Detect discontinuity of CIP: A0 A8
> [   19.846775] snd-bebob fw1.0: Detect discontinuity of CIP: 70 B0
> [   20.335861] snd-bebob fw1.0: Detect discontinuity of CIP: 90 D0
> [   20.856301] snd-bebob fw1.0: Detect discontinuity of CIP: 78 B8
> [   21.312770] snd-bebob fw1.0: Detect discontinuity of CIP: 30 70
> [   21.796716] snd-bebob fw1.0: Detect discontinuity of CIP: 00 40
> [   22.347664] snd-bebob fw1.0: Detect discontinuity of CIP: 00 40
> [   22.818247] snd-bebob fw1.0: Detect discontinuity of CIP: A8 E8
> [   23.306079] snd-bebob fw1.0: Detect discontinuity of CIP: 98 D8
> [   29.544652] snd-bebob fw1.0: Detect discontinuity of CIP: 10 50
> [   30.272090] snd-bebob fw1.0: Detect discontinuity of CIP: A8 E8
> [   30.776168] snd-bebob fw1.0: Detect discontinuity of CIP: 00 40
> [   31.268123] snd-bebob fw1.0: Detect discontinuity of CIP: E0 20
> [   31.766085] snd-bebob fw1.0: Detect discontinuity of CIP: E0 20
> [   32.267903] snd-bebob fw1.0: Detect discontinuity of CIP: 88 C8
> [   32.767989] snd-bebob fw1.0: Detect discontinuity of CIP: F8 38
> [   33.263808] snd-bebob fw1.0: Detect discontinuity of CIP: 78 B8
> [   33.757156] snd-bebob fw1.0: Detect discontinuity of CIP: 08 48
> [   34.258860] snd-bebob fw1.0: Detect discontinuity of CIP: 80 C0
> [   34.755571] snd-bebob fw1.0: Detect discontinuity of CIP: 40 80
> [   35.261252] snd-bebob fw1.0: Detect discontinuity of CIP: 60 A0
> [   35.753980] snd-bebob fw1.0: Detect discontinuity of CIP: 78 B8
> [   36.253547] snd-bebob fw1.0: Detect discontinuity of CIP: C0 00
> [   36.752500] snd-bebob fw1.0: Detect discontinuity of CIP: 08 48
> [   37.255203] snd-bebob fw1.0: Detect discontinuity of CIP: B0 F0
> [  277.760550] snd-bebob fw1.0: Detect discontinuity of CIP: 40 80
> [  278.488972] snd-bebob fw1.0: Detect discontinuity of CIP: C0 00
> [  278.986290] snd-bebob fw1.0: Detect discontinuity of CIP: E0 20
> [  279.485998] snd-bebob fw1.0: Detect discontinuity of CIP: 18 58
> [  279.983838] snd-bebob fw1.0: Detect discontinuity of CIP: D0 10
> [  280.486776] snd-bebob fw1.0: Detect discontinuity of CIP: C0 00
> [  280.979487] snd-bebob fw1.0: Detect discontinuity of CIP: 30 70
> [  281.480952] snd-bebob fw1.0: Detect discontinuity of CIP: 78 B8
> [  281.975413] snd-bebob fw1.0: Detect discontinuity of CIP: 38 78
> [  282.475487] snd-bebob fw1.0: Detect discontinuity of CIP: 60 A0
> [  282.979446] snd-bebob fw1.0: Detect discontinuity of CIP: 88 C8
> [  283.472403] snd-bebob fw1.0: Detect discontinuity of CIP: 88 C8
> [  283.968484] snd-bebob fw1.0: Detect discontinuity of CIP: 68 A8
> [  284.471585] snd-bebob fw1.0: Detect discontinuity of CIP: 30 70
> [  284.562886] usb 3-4.1: reset high-speed USB device number 5 using
> xhci_hcd
> [  284.965508] snd-bebob fw1.0: Detect discontinuity of CIP: D0 10
> [  285.469348] snd-bebob fw1.0: Detect discontinuity of CIP: 68 A8
> [  285.965174] snd-bebob fw1.0: Detect discontinuity of CIP: 20 60
> [  285.981618] firewire_core 0000:05:01.0: phy config: new root=ffc1,
> gap_count=5
> [  290.103982] firewire_core 0000:05:01.0: phy config: new root=ffc1,
> gap_count=5
> I tried update the kernel with eoan-proposed I know run 5.3.20 and I
> have the same problem (the trace above is made with 5.3.20.
> 
> First, I hope I report this the best way, really not sure here.
 
This list is for this purpose. Thanks for your report and I apologize your inconvenience.

> If not, please tell me what to bring (files? logs?) and where (on this
> list? elsewhere?).
> 
> I have spare time to investigate anything that could help here.

The messages in syslog means that your Focusrite Saffire LE
transfers isochronous packet to your system with discontinued
sequence number.

But subtraction of the counter (e.g. 0x20 and 0x60 in the
last line) always results 0x40. The former(=0x20) is expected
but the isochronous packet includes the latter(=0x60). I think
it's any possible bug of ALSA IEC 61883-1/6 packet streaming
engine and check it. I'll install Eoan kernel and test my devices.
(but I don't have Saffire and Saffire LE...) I'd like you to wait
for my test report.


Thanks

Takashi Sakamoto
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