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Message #16077
[Bug 1215513] Re: System locks up, requires hard reset
Hello Dan,
Thank you for your response. I find it somewhat amusing, since I do not
use zram0, or the zram system AT ALL on my server. I manually partition
the drive, (pretty much since I first started using Linux in the early
to mid 1990's), and manually configure a SWAP partition on it (using
file type 82). There never was a swap partition on zram0. My concern
was finding the buffer I/O errors on my console for the first time (and
then seeing them repeated on my text root console (the only thing I
trusted, running on what appeared to be a badly broken Server).
In my first comment, I responded to the error message by entering "fdisk
/dev/ram0", followed by "p", which showed it to never being partitioned,
or anything (like a SWAP partition) being defined. So it LOOKS like I
was never in danger of bug #1215513, but only experiencing the messages,
noted in But #1217189. I'll add a message on that Bug, saying that,
some way or another, the error messages still appear after "fix" of
#1215513, which can CERTAINLY alarm production Linux administrators
anywhere, and cause loss of money in any case where the Server is
anything but something assisting non-profit volunteer work, where they
can be told they need to be patient and wait for their services.
(Actually, due to an early message by dac922, I was able to disable zram
services on a system that has no intention of using them).
Obviously, what happened was that the Kernel 3.8 work, IMPLEMENTING
zram0 swap was "back-ported" to the 3.2 Kernel tree, somewhere <=
vmlinuz-3.2.0-53-generic-pae!!! :-O
Remember, my system is Ubuntu 12.0.4 LTS Server, which, in my opinion is
not in any condition for "stray zram swap" creation! Fortunately,
somebody ported the package zram-config to 12.0.4, allowing me to get
it, which, in effect PERMANENTLY DISABLES the zram0 processes, because
they fail, during the install of zram-config, allowing "apt-get upgrade"
to state that it was not successful in the "install" of this package.
So I suggest that somebody on this forum (again, I'm too busy
administering Linux to normally submit fixes!) put some of this text in
some "FAQ file" somewhere, IN CASE somebody ELSE with Ubuntu 12.0.4
complains about the Bug #1217189 Buffer I/O Error Message.
Forgive my dry humor in this post. As a Linux admin, I'm trained to
"roll with the punches" and to consider the humor of life on Planet
Earth (and, forgive me for adding) the political system in the USA!!!
:-)
And this post will now be "cross posted" to Bug #1217189 with a STRONG
suggestion that it NOT BE CLOSED as long as people are going to complain
about the Buffer I/O Error messages.
Thank you and best regards,
Kenneth Parker, Seattle, WA
-- I'm a Troubleshooter. I look for Trouble and Shoot It! :-)
--
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1215513
Title:
System locks up, requires hard reset
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Precise:
Fix Committed
Status in “linux” source package in Quantal:
Fix Committed
Status in “linux” source package in Raring:
Fix Committed
Status in “linux” source package in Saucy:
Fix Released
Bug description:
Since I started using 3.8.0-29 I experienced system lock ups at random
times. First one was while running Virtualbox (windows guest) but
later have been without virtualbox running for example while shutting
down or while reading a webpage.
I could not find any relevant log, but I'd post any log file
considered useful.
This has hapened in 2 different machines (the one im reporting from is
intel with intel graphics and the other is AMD with radeon graphics).
Both 64 bits.
Up until 3.8.0-27 inclusive I had not had a lockup in years in any of
those machines. I have been running Ubuntu 64 bit since at least 2008
in one of them.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-29-generic 3.8.0-29.42
ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: fede 1829 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
CurrentDmesg:
Date: Thu Aug 22 12:49:35 2013
HibernationDevice: RESUME=UUID=ee5b2280-eed3-41e2-8675-103fbdd703d1
InstallationDate: Installed on 2012-12-03 (261 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-generic root=UUID=0d34a8a5-2002-47e8-9128-a35623612ec1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-29-generic N/A
linux-backports-modules-3.8.0-29-generic N/A
linux-firmware 1.106
RfKill:
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: Upgraded to raring on 2013-04-25 (118 days ago)
dmi.bios.date: 09/11/2006
dmi.bios.vendor: Intel Corp.
dmi.bios.version: TS94610J.86A.0047.2006.0911.0110
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: D946GZIS
dmi.board.vendor: Intel Corporation
dmi.board.version: AAD66165-501
dmi.chassis.type: 2
dmi.modalias: dmi:bvnIntelCorp.:bvrTS94610J.86A.0047.2006.0911.0110:bd09/11/2006:svn:pn:pvr:rvnIntelCorporation:rnD946GZIS:rvrAAD66165-501:cvn:ct2:cvr:
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