"Takashi Sakamoto" <o-takashi@xxxxxxxxxxxxx> – November 9, 2019 1:38 PM > Hi, > > I'm sorry to be late for reply but I have a short vacation in this week. > > On Wed, Oct 30, 2019 at 03:40:03PM +0100, Jean-Paul Argudo wrote: > > > * /proc/asound/cardX/firewire/firmware > > > > $ cat /proc/asound/card3/firewire/firmware > > Manufacturer: bridgeCo > > Protocol Ver: 1 > > Build Ver: 0 > > GUID: 0x00130E010004394C > > Model ID: 0x02 > > Model Rev: 1 > > Firmware Date: 20061207 > > Firmware Time: 140826 > > Firmware ID: 0x0 > > Firmware Ver: 16850194 > > Base Addr: 0x20080000 > > Max Size: 1572864 > > Loader Date: 20051019 > > Loader Time: 094952 > > Before vacation I made arrangement to buy Focusrite Saffire LE in used > market and today it arrived. As long as I can see, the unit uses the same > firmware which your unit uses. > > >>> 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 regenerate this phenomena. > > >>> 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 > >>> ... > >>> [ 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 can see as well. > > Then, I realized that these discontinuity occurs in packet streaming > of 'second or later'. In short, once disconnection of packet streaming, > the unit transfers packets with discontinuity in packet streaming of > reconnection. Furthermore, the discontinuity is in the early isoc > cycles of packet streaming. > > I've already commit to avoid the detection of discontinuity in recent > commit for v5.5 kernel (under development): > git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/sound/firewire/bebob > > In this patch, isoc packets from the device are captured enough after > connection to skip early cycles of packet streaming, thus the > discontinuity is not detected. > > As long as I tested, this version of ALSA BeBoB driver works well with > the device. I'd like you to test with backport drivers as well: > github.com/takaswie/snd-firewire-improve > > > Regards > > Takashi Sakamoto > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > mailman.alsa-project.org/mailman/listinfo/alsa-devel _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
