I installed the kernel by adding deb http://archive.ubuntu.com/ubuntu/ eoan-proposed restricted main multiverse universe to my /etc/apt/sources.list
and then installed sudo apt-get install linux-image-5.3.0-28-generic and sudo apt-get install linux-image-5.3.0-28-lowlatency The 5.3.0-28-lowlatency kernel has the same behaviour as 5.3.0-26-lowlatency, i.e. recognizing the cards but not the pcm device. $ uname -a Linux sim00448 5.3.0-28-lowlatency #30-Ubuntu SMP PREEMPT Wed Jan 15 02:18:14 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux The generic kernel did not load any snd modules when checked with "$ lsmod | grep snd". $ uname -a Linux sim00448 5.3.0-28-generic #30-Ubuntu SMP Wed Jan 15 01:08:19 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux $ ls -l /proc/asound ls: cannot access '/proc/asound': No such file or directory $ dmesg | grep -i audio [ 0.138934] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 0.809235] usb 3-3: Manufacturer: M-Audio [ 1.392886] input: M-Audio Fast Track C400 as /devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.5/0003:0763:2030.0001/input/input2 [ 1.451099] hid-generic 0003:0763:2030.0001: input,hidraw0: USB HID v1.10 Keyboard [M-Audio Fast Track C400] on usb-0000:00:14.0-3/input5 $ aplay -l aplay: device_list:272: no soundcards found... -- 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/1859781 Title: snd_usb_audio not working in 5.3.0-26-lowlatency Status in linux package in Ubuntu: Incomplete Bug description: An usb-interface (M-Audio Fast Track C400) is being recognized but not its pcm devices. The problem does not appear with kernel 5.3.0-24-lowlatency. A detailed report can be found here: https://askubuntu.com/questions/1201968/ubuntu-studio-19-10-usb-sound-card-not-working-anymore-appears-in-proc-asound ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-26-lowlatency 5.3.0-26.28 ProcVersionSignature: Ubuntu 5.3.0-26.28-lowlatency 5.3.13 Uname: Linux 5.3.0-26-lowlatency x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: sihorn 1767 F.... pulseaudio CurrentDesktop: XFCE Date: Wed Jan 15 09:57:00 2020 InstallationDate: Installed on 2019-11-27 (48 days ago) InstallationMedia: Ubuntu-Studio 19.10 "Eoan Ermine" - Release amd64 (20191017) IwConfig: lo no wireless extensions. enp3s0 no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. B85-HD3 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-26-lowlatency root=UUID=c01dfb46-88ab-4289-8362-b7871c21ef2f ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.3.0-26-lowlatency N/A linux-backports-modules-5.3.0-26-lowlatency N/A linux-firmware 1.183.3 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/04/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F2 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: B85-HD3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF2:bd07/04/2014:svnGigabyteTechnologyCo.,Ltd.:pnB85-HD3:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnB85-HD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: B85-HD3 dmi.product.sku: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859781/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
