Comment 0 for bug 1755326

I have a fresh installation of Ubuntu 17.10 with almost nothing extra installed yet besides Bitwig Studio, Cadence and a few other things from the KX Studio repositories.

But I also tried the bug after a fresh install with nothing else than Bitwig Studio installed, it's the same.

I have a TC Electronics Impact Twin Firewire audio interface.
It is connected to a Iocrest SY-PEX30016 PCI-E card, which has a Texas Instruments XIO2213BZAY chipset.

The ALSA snd-dice drivers work, but with glitches.

There is a periodic, glitch in the sound that sounds like a part of the stream is missing, or something. It is steady in timing, nothing seems to have an effect on it.
Recording seems to work. All outputs and inputs, also the ADAT outputs seem to work, altough I could not test if the ADAT outputs feature the glitch too.

Seemingly randomly there might be a short maybe around 0.3 second total break in the sound.

I'm not getting xruns at all.

I tried also Ubuntu Studio live USB, it has the exact same glitch. I also tried a Native Instruments Audio2DJ USB interface, with that there is no problem with the sound on my computer.

I tried also with Carla and ZynAddSubFx, and also with the live USB of Linux Mint (current version), and the same glitch is present.

I tried also another Firewire controller card with a XIO2200A Texas Instruments chip, it features the same glitch, but running a different speed.

I had a KX Studio 14.x installation a few years ago, where the interface was working without a hitch. But then I was running with FFADO.

So to me it seems that the kernel integration of snd-dice has some problem with timing with a TC Electronics interface?

I could not get FFADO to run with Jack now so I can't say if the FFADO implementation would work.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: pulseaudio 1:10.0-2ubuntu3.1
ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC4D0c: kim 3563 F...m jackdbus
 /dev/snd/pcmC4D0p: kim 3563 F...m jackdbus
 /dev/snd/controlC4: kim 3563 F.... jackdbus
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 13 02:11:51 2018
InstallationDate: Installed on 2018-03-12 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/12/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2603
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: M5A97 EVO R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2603:bd02/12/2015:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97EVOR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.