As a temporary measure, disabling IOMMU as follows seems to prevent the error.
sudo vi /etc/default/grub + GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=off" sudo grub-update -- 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/1971505 Title: DMAR: ERROR: DMA PTE for vPFN 0x8e8fe already set Status in linux package in Ubuntu: Incomplete Bug description: I got this error after a fresh install of Ubuntu 22.4 The server is a Gen8 Microserver. I moved from Fedora 35 to Ubuntu. Everything was working before the format and reinstall. Unfortunately, I cannot get to a command line in order to gather any other logs as the server is hung in mid boot with this error flooding the screen. --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Apr 7 19:28 seq crw-rw---- 1 root audio 116, 33 Apr 7 19:28 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A CasperMD5CheckResult: pass DistroRelease: Ubuntu 22.04 InstallationDate: Installed on 2022-05-03 (0 days ago) InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220421) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: HP ProLiant MicroServer Gen8 NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 mgag200drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-27-generic root=UUID=6df4f807-876c-40e3-ba9d-667c4b1c504d ro ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30 RelatedPackageVersions: linux-restricted-modules-5.15.0-27-generic N/A linux-backports-modules-5.15.0-27-generic N/A linux-firmware 20220329.git681281e4-0ubuntu1 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' Tags: jammy uec-images Uname: Linux 5.15.0-27-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: N/A _MarkForUpload: True dmi.bios.date: 07/16/2015 dmi.bios.vendor: HP dmi.bios.version: J06 dmi.chassis.type: 7 dmi.chassis.vendor: HP dmi.ec.firmware.release: 2.30 dmi.modalias: dmi:bvnHP:bvrJ06:bd07/16/2015:efr2.30:svnHP:pnProLiantMicroServerGen8:pvr:cvnHP:ct7:cvr:sku819187-001: dmi.product.family: ProLiant dmi.product.name: ProLiant MicroServer Gen8 dmi.product.sku: 819187-001 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1971505/+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
