Public bug reported:
I experienced two complete system freezes today after updating to new
kernel 5.4.0-40
Additional Information: I bought a new (used) server about two months ago which
replaced an older HP Workstation used as server. Before, I used to install
ubuntu mainline kernel regularly, mainly out of my own interest.
Being lazy, I did not set up the server with a new OS but used the old Ubuntu
HDD in the new server - it booted up just fine. But then out of a sudden,
freezes started - complete system halts, no direct console access possible, not
even a message on the screen what happened, simply a complete halt.
I can access the server via ilo - ilo tells me that there are no errors,
after resetting, it boots up like normal, but before reset operating
system is entirely stalled.
I solved the problem uninstalling any mainline kernels and sticking to
kernel version shipped with ubuntu 20.04 LTS, which made the system rock
solid (rebooting server for new kernel versions is about every x days,
so we can argue what rock solid is, it did not have an uptime of 100
days) but while using 5.4. kernel branch shipped with focal, I had no
single freeze at all - until today, twice, one about 10 hours after
booting into 5.4.40, second one 1 hour after first one.
I now went back to 5.4.39 and until now - it is stable again without any
freeze.
I have no real idea what this could be, my assumption while not using
mainline kernel was, that it has something to do with migitations
against cpu bugs. So if my theory is correct it could be something
already implemented in more recent kernel versions but not implemented
into 5.4 before 5.4.40.
I did not find any bug report similar to this - just hoping it is not an
extremely special case concerning this server with this cpu...
If I can assist in any way - just drop me a note.
Thank you in advance
Simon
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-39-generic 5.4.0-39.43
ProcVersionSignature: Ubuntu 5.4.0-39.43-generic 5.4.41
Uname: Linux 5.4.0-39-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
Date: Thu Jul 2 15:46:41 2020
HibernationDevice: RESUME=UUID=59222355-1327-4698-8eba-bcb35fa38b74
MachineType: HP ProLiant DL380e Gen8
ProcFB: 0 mgag200drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-39-generic
root=UUID=56e35c58-7c2f-4804-9fff-736a2d3ab35d 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-5.4.0-39-generic N/A
linux-backports-modules-5.4.0-39-generic N/A
linux-firmware 1.187.1
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-06-01 (31 days ago)
dmi.bios.date: 05/24/2019
dmi.bios.vendor: HP
dmi.bios.version: P73
dmi.chassis.type: 23
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrP73:bd05/24/2019:svnHP:pnProLiantDL380eGen8:pvr:cvnHP:ct23:cvr:
dmi.product.family: ProLiant
dmi.product.name: ProLiant DL380e Gen8
dmi.product.sku: D0E39A
dmi.sys.vendor: HP
modified.conffile..etc.logrotate.d.apport: [modified]
mtime.conffile..etc.logrotate.d.apport: 2016-01-02T14:22:51.291889
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1886057
Title:
Complete System Halt on HP Proliant 380e Gen8 since 5.4.0-40
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