Public bug reported:
Problem: System freezes and reboots during attempt to copy a line from
kern.log after excessive entries into it.
Expected behaviour: System remains stable so I can investigate the
initial problem. ;)
Details:
The problems with the RTL8192SE drivers are discussed in length in
#401126 and #457872 suggests there might be several problems related to
it.
Background: The wifi driver for my Toshiba Qosmio x500-10U's RTL8192SE
is not directly supported through the Ubuntu repositories and has to be
compiled by hand after each kernel update.
This worked fine until the most recent kernel update ("uname -a" follows)
Linux TRULYON 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010
x86_64 GNU/Linux
/proc/version_signature identifies the version as "Ubuntu
2.6.31-20.58-generic", which corresponds to my standard amd64 Karmic install.
The driver I'm using is rtl8192se_linux_2.6.0010.1020.2009_64bit discussed in
#401126 and similar entries.
After several tries the driver finally compiled last Friday and it seemed to
work fine.
When I powered up the machine today and tried to retrieve new commits
from a project's GIT repository the initial list retrieval took
seemingly forever without a result and the kern.log was flooded with
"DMA: Out of SW-IOMMU space for 9100 bytes at device 0000:0a:00.0"
entries.
Once I tried to copy a line from "System > Administration > Log File
Viewer" for a Google search (machine was connected through the Atheros'
port (eth0) at that point since wifi didn't seem to work) the system
just froze, didn't accept any peripheral input and after a while
rebooted with no error message whatsoever.
This is reported as a new bug rather than a variation of bug #457872
since the problem didn't occur after the installation but only after a
full reboot (used the Windows partition during the weekend for some
games).
Note: The "linux" package was automatically selected once I used the crash
report tool.
Here's the output of "apt-cache policy linux":
linux:
Installed: (none)
Candidate: 2.6.31.20.33
Version table:
2.6.31.20.33 0
500 http://de.archive.ubuntu.com karmic-updates/main Packages
500 http://security.ubuntu.com karmic-security/main Packages
2.6.31.14.27 0
500 http://de.archive.ubuntu.com karmic/main Packages
Please let me know if there's anything more I can provide to shed some
light onto this problem.
ProblemType: Bug
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: michael 1823 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0900000 irq 22'
Mixer name : 'Conexant ID 5067'
Components : 'HDA:14f15067,1179ffd4,00100301'
Controls : 6
Simple ctrls : 4
CheckboxSubmission: b24a93d56032d021e5fc32379db8b184
CheckboxSystem: b1865df84255b8716d3bcc269ff410d1
Date: Mon Mar 22 10:18:45 2010
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=043a2dcb-92da-44ad-98b0-ae0af3d83624
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: TOSHIBA QOSMIO X500
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-20-generic 2.6.31-20.58
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-20-generic
root=UUID=ef51f79a-353d-4af0-a490-6cff0af6aad0 ro vga=799
crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
RelatedPackageVersions:
linux-backports-modules-2.6.31-20-generic N/A
linux-firmware 1.26
RfKill:
SourcePackage: linux
Uname: Linux 2.6.31-20-generic x86_64
WifiSyslog:
dmi.bios.date: 02/23/2010
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V2.20
dmi.board.name: QOSMIO X500
dmi.board.vendor: TOSHIBA
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnTOSHIBA:bvrV2.20:bd02/23/2010:svnTOSHIBA:pnQOSMIOX500:pvrPQX33E-00S009GR:rvnTOSHIBA:rnQOSMIOX500:rvrNotApplicable:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: QOSMIO X500
dmi.product.version: PQX33E-00S009GR
dmi.sys.vendor: TOSHIBA
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
System crash possibly due to wifi driver
https://bugs.launchpad.net/bugs/544040
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