apport information ** Attachment added: "ProcInterrupts.txt" https://bugs.launchpad.net/bugs/1904566/+attachment/5435716/+files/ProcInterrupts.txt
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1904566 Title: jackd/alsa: only 2 channels of 4 found on usb-interface Lexicon Omega (ALSA: cannot set channel count to 4 for capture) Status in linux package in Ubuntu: Confirmed Status in linux-hwe-5.4 package in Ubuntu: New Bug description: Hi, it isn't easy to describe but i will try and give you all information which seem to interfer with the bug .. Sorry, my system is running with german language output. First my environment : Description: Ubuntu 18.04.5 LTS Release: 18.04 Kernel: 5.4.0-54-generic #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux alsa: $ apt list --installed|grep -i alsa alsa-base/bionic,bionic,now 1.0.25+dfsg-0ubuntu5 all [installiert] alsa-utils/bionic,now 1.1.3-1ubuntu1 amd64 [installiert] libsox-fmt-alsa/bionic-updates,bionic-security,now 14.4.2-3ubuntu0.18.04.1 amd64 [Installiert,automatisch] libzita-alsa-pcmi0/bionic,now 0.2.0-4ubuntu2 amd64 [Installiert,automatisch] jackd: apt list --installed|grep -i jackd jackd/bionic,bionic,now 5 all [Installiert,automatisch] jackd2/bionic,now 1.9.12~dfsg-2 amd64 [Installiert,automatisch] libjack-jackd2-0/bionic,now 1.9.12~dfsg-2 amd64 [Installiert,automatisch] libjack-jackd2-dev/bionic,now 1.9.12~dfsg-2 amd64 [installiert] My interface (Omega) : $ aplay -l **** Liste der Hardware-Geräte (PLAYBACK) **** Karte 0: PCH [HDA Intel PCH], Gerät 0: ALC887-VD Analog [ALC887-VD Analog] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 Karte 0: PCH [HDA Intel PCH], Gerät 1: ALC887-VD Digital [ALC887-VD Digital] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 Karte 0: PCH [HDA Intel PCH], Gerät 3: HDMI 0 [HDMI 0] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 Karte 0: PCH [HDA Intel PCH], Gerät 7: HDMI 1 [HDMI 1] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 Karte 1: Omega [Lexicon Omega], Gerät 0: USB Audio [USB Audio] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 Karte 1: Omega [Lexicon Omega], Gerät 1: USB Audio [USB Audio #1] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0 The problem: I try to record some audio, using the usb-audio-interface Lexicon Omega. This interface has 4 capture channels, but all efforts to get them working/configured failed. Here is the commandline wich is working (but only two capture-channels !) $ /usr/bin/jackd -T -ndefault -dalsa -r4800 -p256 -n3 H -D -d hw:Omega -i2 -o2 jackdmp 1.9.12 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2016 Grame. Copyright 2016-2017 Filipe Coelho. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" audio_reservation_init Acquire audio card Audio1 creating alsa driver ... hw:Omega|hw:Omega|256|3|4800|2|2|nomon|swmeter|-|32bit configuring for 4800Hz, period = 256 frames (53.3 ms), buffer = 3 periods ALSA: final selected sample format for capture: 24bit little-endian in 3bytes format ALSA: use 3 periods for capture ALSA: final selected sample format for playback: 24bit little-endian in 3bytes format ALSA: use 3 periods for playback The same with 4 capture-channels fails: $ /usr/bin/jackd -T -ndefault -dalsa -r4800 -p256 -n3 H -D -d hw:Omega -i4 -o2 jackdmp 1.9.12 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2016 Grame. Copyright 2016-2017 Filipe Coelho. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" audio_reservation_init Acquire audio card Audio1 creating alsa driver ... hw:Omega|hw:Omega|256|3|4800|4|2|nomon|swmeter|-|32bit configuring for 4800Hz, period = 256 frames (53.3 ms), buffer = 3 periods ALSA: final selected sample format for capture: 24bit little-endian in 3bytes format ALSA: cannot set channel count to 4 for capture ALSA: cannot configure capture channel JackTemporaryException : now quits... Released audio card Audio1 audio_reservation_finish Cannot initialize driver JackServer::Open failed with -1 Failed to open server So, one could say the interface is broken, but i tested on an older system (Ubuntustudio 16.04): $ uname -a 4.10.0-42-lowlatency #46~16.04.1-Ubuntu SMP PREEMPT Mon Dec 4 17:13:40 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux $ apt list --installed|grep -i alsa alsa-base/bionic,bionic,now 1.0.25+dfsg-0ubuntu5 all [installiert] alsa-tools/bionic,now 1.1.3-1 amd64 [installiert] alsa-tools-gui/bionic,now 1.1.3-1 amd64 [installiert] alsa-utils/bionic,now 1.1.3-1ubuntu1 amd64 [installiert] gstreamer1.0-alsa/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 amd64 [installiert] libsox-fmt-alsa/bionic-updates,bionic-security,now 14.4.2-3ubuntu0.18.04.1 amd64 [installiert] libzita-alsa-pcmi0/bionic,now 0.2.0-4ubuntu2 amd64 [installiert] $ apt list --installed|grep -i jackd jackd/bionic,bionic,now 5 all [installiert] jackd2/bionic,now 1.9.12~dfsg-2 amd64 [installiert] jackd2-firewire/bionic,now 1.9.12~dfsg-2 amd64 [installiert] libjack-jackd2-0/bionic,now 1.9.12~dfsg-2 amd64 [installiert] libjack-jackd2-dev/bionic,now 1.9.12~dfsg-2 amd64 [installiert] jackd is configure via qjackctl, no specification of channelcount (only default-value:0 ). Here's the output of jackd starting (finding 4 capture channels + 2 playback channels) --- snip--- Tue Nov 17 12:23:43 2020: Starting jack server... Tue Nov 17 12:23:43 2020: JACK server starting in realtime mode with priority 10 Tue Nov 17 12:23:43 2020: self-connect-mode is "Don't restrict self connect requests" Tue Nov 17 12:23:43 2020: Jack: JackPosixThread::StartImp : create non RT thread Tue Nov 17 12:23:43 2020: Jack: JackPosixThread::ThreadHandler : start Tue Nov 17 12:23:43 2020: Jack: capture device hw:Omega Tue Nov 17 12:23:43 2020: Jack: playback device hw:Omega Tue Nov 17 12:23:43 2020: Jack: apparent rate = 44100 Tue Nov 17 12:23:43 2020: Jack: frames per period = 256 Tue Nov 17 12:23:43 2020: Jack: JackDriver::Open capture_driver_name = hw:Omega Tue Nov 17 12:23:43 2020: Jack: JackDriver::Open playback_driver_name = hw:Omega Tue Nov 17 12:23:43 2020: Jack: Check protocol client = 8 server = 8 Tue Nov 17 12:23:43 2020: Jack: JackEngine::ClientInternalOpen: name = system Tue Nov 17 12:23:43 2020: Jack: JackEngine::AllocateRefNum ref = 0 Tue Nov 17 12:23:43 2020: Jack: JackLinuxFutex::Allocate name = jack_sem.505_default_system val = 0 Tue Nov 17 12:23:43 2020: Jack: JackEngine::NotifyAddClient: name = system Tue Nov 17 12:23:43 2020: Jack: JackGraphManager::SetBufferSize size = 256 Tue Nov 17 12:23:43 2020: Jack: JackConnectionManager::DirectConnect first: ref1 = 0 ref2 = 0 Tue Nov 17 12:23:43 2020: Jack: JackGraphManager::ConnectRefNum cur_index = 0 ref1 = 0 ref2 = 0 Tue Nov 17 12:23:43 2020: Jack: JackDriver::SetupDriverSync driver sem in flush mode Tue Nov 17 12:23:43 2020: Acquired audio card Audio1 Tue Nov 17 12:23:43 2020: creating alsa driver ... hw:Omega|hw:Omega|256|2|44100|0|0|hwmon|swmeter|-|32bit Tue Nov 17 12:23:43 2020: configuring for 44100Hz, period = 256 frames (5.8 ms), buffer = 2 periods Tue Nov 17 12:23:43 2020: ALSA: final selected sample format for capture: 24bit little-endian in 3bytes format Tue Nov 17 12:23:43 2020: ALSA: use 2 periods for capture Tue Nov 17 12:23:43 2020: ALSA: final selected sample format for playback: 24bit little-endian in 3bytes format Tue Nov 17 12:23:43 2020: ALSA: use 2 periods for playback --- snip-- The attachment shows you there are 4 capture-channels. The bug is described here by another person too: https://linuxmusicians.com/viewtopic.php?f=64&t=21380 My opinion is that somewhere in development of kernel alsa has lost it's capability to configure more than 2 capture-channels. I wonder why nobody else is complaining, maybe because it's an usb-device ? If you need more information, please tell me which, i will provide them. best regards Harry --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.20 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=none #RESUME=UUID=dfde7c59-5c49-4cce-9ba4-b8ac106ae5cb InstallationDate: Installed on 2017-05-20 (1277 days ago) InstallationMedia: Xubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215) IwConfig: lo no wireless extensions. enp0s31f6 no wireless extensions. Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 046d:c501 Logitech, Inc. Cordless Mouse Receiver Bus 001 Device 002: ID 05e3:0716 Genesys Logic, Inc. USB 2.0 Multislot Card Reader/Writer Bus 001 Device 004: ID 046a:010e Cherry GmbH Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: System manufacturer System Product Name Package: linux-hwe-5.4 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-54-generic root=UUID=af5502e5-b124-4e34-a0d2-ece834ccdc87 ro rootflags=subvol=@ ipv6.disable=1 fastboot plymouth:debug ipv6.disable=1 ProcVersionSignature: Ubuntu 5.4.0-54.60~18.04.1-generic 5.4.65 RelatedPackageVersions: linux-restricted-modules-5.4.0-54-generic N/A linux-backports-modules-5.4.0-54-generic N/A linux-firmware 1.173.19 RfKill: Tags: bionic Uname: Linux 5.4.0-54-generic x86_64 UpgradeStatus: Upgraded to bionic on 2018-11-23 (726 days ago) UserGroups: adm audio cdrom davfs2 fax lpadmin netdev netzuser plugdev sambashare scanner sudo vboxusers video wireshark _MarkForUpload: True dmi.bios.date: 05/16/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3805 dmi.board.asset.tag: Default string dmi.board.name: H170-PRO/USB 3.1 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3805:bd05/16/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH170-PRO/USB3.1:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1904566/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
