Dell PowerEdge 720 on ubuntu 14.04 shows MCE errors on dmesg. Dell support instructed to run DSET and BIOS hardware diagnostics. Neither of the tools showed any errors. Dell support said that if there was a hardware error it would have been shown on Dell logs and the probable reason for the dmesg log is a bug in ubuntu kernel MCE reporting.
So, is it that following dmesg is because of a kernel bug in ubuntu 14.04 server?
[11562.171040] Please check user daemon is running.
[94953.306404] sbridge: HANDLING MCE MEMORY ERROR
[94953.306415] CPU 1: Machine Check Exception: 0 Bank 9: 8c00004b000800c0
[94953.306416] TSC 0 ADDR 2dfa0e1000 MISC 90000800080168c PROCESSOR 0:306e4 TIME 1399142359 SOCKET 1 APIC 20
[94953.306422] sbridge: HANDLING MCE MEMORY ERROR
[94953.306423] CPU 1: Machine Check Exception: 0 Bank 10: 8c000050000800c1
[94953.306424] TSC 0 ADDR 2dfa0e1000 MISC 90000000000208c PROCESSOR 0:306e4 TIME 1399142359 SOCKET 1 APIC 20
[94953.532217] EDAC MC1: 1 CE memory scrubbing error on CPU_SrcID#1_Channel#0_DIMM#0 (channel:0 slot:0 page:0x2dfa0e1 offset:0x0 grain:32 syndrome:0x0 - area:DRAM err_code:0008:00c0 socket:1 channel_mask:3 rank:0)
[94953.532226] EDAC MC1: 1 CE memory scrubbing error on CPU_SrcID#1_Channel#1_DIMM#0 (channel:1 slot:0 page:0x2dfa0e1 offset:0x0 grain:32 syndrome:0x0 - area:DRAM err_code:0008:00c1 socket:1 channel_mask:3 rank:0)
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 touko 2 19:15 seq
crw-rw---- 1 root audio 116, 33 touko 2 19:15 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
CurrentDmesg:
Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
dmesg: write failed: Broken pipe
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-02-26 (66 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140219)
MachineType: Dell Inc. PowerEdge R720
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=c03eb237-955a-4dee-bba1-deded53df372 ro
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty
Uname: Linux 3.13.0-24-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 01/16/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.2.2
dmi.board.name: 0DCWD1
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr2.2.2:bd01/16/2014:svnDellInc.:pnPowerEdgeR720:pvr:rvnDellInc.:rn0DCWD1:rvrA01:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R720
dmi.sys.vendor: Dell Inc.
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1315736
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.