Please refer to my report in upstream: http://mailman.alsa-project.org/pipermail/alsa-devel/2016-May/107715.html
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1755326 Title: Periodic glitch in sound with Firewire and snd-dice Status in linux package in Ubuntu: Confirmed Status in pulseaudio package in Ubuntu: New Bug description: 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. Not sure if this information can be added afterwards: but I installed the 3.19.8 low latency kernel, and the problem disappeared. On 17.1 I can't use the current low latency kernel because the system becomes very unresponsive to the point of being hard to even log in. So I'm not sure if this is just a matter of difference between the low latency and regular kernels. 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. --- ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', '/dev/snd/hwC3D0', '/dev/snd/midiC3D0', '/dev/snd/pcmC3D0c', '/dev/snd/pcmC3D0p', '/dev/snd/controlC3', '/dev/snd/by-path', '/dev/snd/by-id', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/pcmC1D0p', '/dev/snd/controlC1', '/dev/snd/midiC2D0', '/dev/snd/controlC2', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 17.10 HibernationDevice: RESUME=UUID=2446385e-9b65-4ff6-8ca1-98628d9679af InstallationDate: Installed on 2018-03-12 (0 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1) MachineType: To be filled by O.E.M. To be filled by O.E.M. Package: pulseaudio 1:10.0-2ubuntu3.1 PackageArchitecture: amd64 ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-36-generic root=UUID=18224e79-921d-4072-b751-497ab62783ec ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.13.0-36-generic N/A linux-backports-modules-4.13.0-36-generic N/A linux-firmware 1.169.3 RfKill: StagingDrivers: r8712u Tags: artful wayland-session staging wayland-session third-party-packages Uname: Linux 4.13.0-36-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True 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. 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