The OS spontaneously froze whilst doing some work (firefox, VMs). I can't find anything suspect in the logs at this stage. I will keep an eye out for this issue but would like advise on what to check for, any tools I should install and commands to run when it crashes again.
ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: systemd 247.3-3ubuntu3
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: pass
Date: Tue Apr 20 14:28:46 2021
ExecutablePath: /usr/lib/systemd/systemd
InstallationDate: Installed on 2021-04-16 (3 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210331.1)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcEnviron:
TERM=linux
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-16-generic root=UUID=739968f7-1aa4-47f1-8d68-55af0ffb428d ro quiet splash vt.handoff=7
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /usr/lib/systemd/system/rc-local.service → /usr/lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /usr/lib/systemd/system/systemd-localed.service → /usr/lib/systemd/system/systemd-localed.service.d/locale-gen.conf
[EXTENDED] /usr/lib/systemd/system/user@.service → /usr/lib/systemd/system/user@.service.d/timeout.conf
3 overridden configuration files found.
SystemdFailedUnits:
Error: command ['systemctl', 'status', '--full', '●'] failed with exit code 4: Invalid unit name "●" escaped as "\xe2\x97\x8f" (maybe you should use systemd-escape?).
Unit \xe2\x97\x8f.service could not be found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/11/2013
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P2.30
dmi.board.name: Z77 OC Formula
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.:bvrP2.30:bd07/11/2013:br4.6:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ77OCFormula: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.
First, 21.04 isn't released yet, so you shouldn't be using it unless you're prepared for bugs.
Second, it would be better to ask for general debugging help at https:/
There's no information in your attached dmesg that might help, though that is probably because it's from the boot after your hang, so it doesn't include anything useful.
If you have any details about any actual bug please attach it.