I am experiencing the same issue, also with Aopen DE6340 in a business- related application that needs to run on this hardware. Has this been recognized as an issue or is there any extra information I can provide?
-- 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/1883521 Title: Hang on shutdown/restart Status in linux package in Ubuntu: Confirmed Bug description: I installed ubuntu 20.04 in an Aopen DE6340 which contains an "AMD Ryzen Embedded V1807B with Radeon Vega Gfx" and the installation went correctly, but at the end at the moment of unplugging the iso and restarting the computer never restarts, appears periodically about hung task timeout and never restarts. I tried in the installed system with Ubuntu 5.4.0-37.41-generic 5.4.41 and linux-image-5.4.0-28-generic and it's happening in both versions. With mainline kernel its working correctly until linux-image- unsigned-5.4.21-050421-generic_5.4.21-050421.202002191431_amd64.deb from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4.21/, after 5.4.22 it's starting to happen the same. Maybe related: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe/+bug/1880041 because there are a lot of coincidences, but the fix is released for other kernel version and I tested in bionic and continues happening. --- ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-37-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu27.2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' CasperMD5CheckResult: pass DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-06-15 (0 days ago) InstallationMedia: Ubuntu-Server 20.04 LTS "Focal Fossa" - Release amd64 (20200423) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Lsusb-t: /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 10000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M |__ Port 2: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M MachineType: AOPEN Inc. DE6340 Package: linux (not installed) ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic root=UUID=68b38bec-b005-4f3a-bc41-b88bb5d98d1d ro ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41 RelatedPackageVersions: linux-restricted-modules-5.4.0-37-generic N/A linux-backports-modules-5.4.0-37-generic N/A linux-firmware 1.187 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' Tags: focal uec-images Uname: Linux 5.4.0-37-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 01/28/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.13 dmi.board.name: aVKx-DE R1.02 dmi.board.vendor: AOPEN Inc. dmi.board.version: 55DEL10001P dmi.chassis.type: 3 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.13:bd01/28/2019:svnAOPENInc.:pnDE6340:pvrRYZENV1000:rvnAOPENInc.:rnaVKx-DER1.02:rvr55DEL10001P:cvn:ct3:cvr: dmi.product.name: DE6340 dmi.product.sku: DE6340 dmi.product.version: RYZEN V1000 dmi.sys.vendor: AOPEN Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883521/+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