A few more things: /proc/cpuinfo reports both `sme` and `sev`. cpuid confirms that the relevant cpu register bits are set: $ cpuid -r -1 -l 0x8000001f CPU: 0x8000001f 0x00: eax=0x0001000f ebx=0x0000016f ecx=0x000001fd edx=0x00000001
$ modprobe msr $ rdmsr 0xC0010010 f40000 $ grep CONFIG_AMD_MEM_ENCRYPT /boot/config-5.4.0-29-generic CONFIG_AMD_MEM_ENCRYPT=y # CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT is not set I tried finding additional options with regards to SME in the uefi, but there were none. -- 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/1879538 Title: System freeze when booting with mem_encrypt=on Status in linux package in Ubuntu: Confirmed Bug description: I want to use AMD SME (memory encryption) on ubuntu 20.04. Hardware: ASRock B450 Pro4, Ryzen 3600, 16GB memory. Unfortunately, when I use the `mem_encrypt=on` cmdline option, the system completely freezes when grub tries to load kernel/initramfs. Black screen, so unfortunately no log output. I have tried adding iommu=soft as I read that suggestion in another place, but that did not help. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-29-generic 5.4.0-29.33 ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30 Uname: Linux 5.4.0-29-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: gdm 1361 F.... pulseaudio /dev/snd/controlC0: gdm 1361 F.... pulseaudio CasperMD5CheckResult: skip Date: Tue May 19 19:45:04 2020 InstallationDate: Installed on 2020-05-15 (3 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) IwConfig: lo no wireless extensions. enp8s0 no wireless extensions. Lsusb: Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root 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 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-29-generic root=/dev/mapper/desktop_vg0-ubuntu_root ro PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.4.0-29-generic N/A linux-backports-modules-5.4.0-29-generic N/A linux-firmware 1.187 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/05/2020 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P4.10 dmi.board.name: B450 Pro4 dmi.board.vendor: ASRock 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.:bvrP4.10:bd03/05/2020:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB450Pro4:rvr: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.sku: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879538/+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
