Ubuntu 12.04 crashes if lan cable is pulled out from emachines laptop

[Link]

Hello

I'm running Ubuntu 12.04 on an emachines G625 Laptop. But, Ubuntu is only working if an lan caple with internet connection is plugged in.
This means: If the lan cable gets plugged out (and the computer notices this - with showing a disconnect message), the whole system freezes. I can only move the curser, but doing nothing with it or something else (like open a program with the cursor, or with a shortcut).

The problem appears after logging in to the standard ubuntu user interface. The start screen is working without an internet connection.
I can see only the background image after logging in without internet connection.
The same problem appears in the "user defined session".
Ubuntu 2D works without an lan cable connection, and also the console session.
But in Ubuntu 2D, the wireless lan doesn't work. The available connections are displayed, but the computer can not connect.

Before Ubuntu 12.04, i had Ubuntu 10.04 installed on this emachines laptop. 10.04 didn't have this problem.
I installed 12.04 with upgrading 10.04, and also with installing it from an live usb stick and live cd. Nothing makes a different.
The live system also doesn't work without a lan connection.

needed details:

Description: Ubuntu 12.04.1 LTS
Release: 12.04

network-manager:
  Installiert: 0.9.4.0-0ubuntu4.1
  Kandidat: 0.9.4.0-0ubuntu4.1
  Versionstabelle:
 *** 0.9.4.0-0ubuntu4.1 0
        500 http://at.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     0.9.4.0-0ubuntu3 0
        500 http://at.archive.ubuntu.com/ubuntu/ precise/main i386 Packages

(I asked this issue before here https://answers.launchpad.net/ubuntu/+question/209013 and got the hint that the network-manager causes the problem form user actionparsnip.)

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Wed Sep 19 19:19:42 2012
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 10.04.4 LTS "Lucid Lynx" - Release i386 (20120214.2)
IpRoute:
 default via 10.0.0.138 dev eth0 proto static
 10.0.0.0/24 dev eth0 proto kernel scope link src 10.0.0.7 metric 1
 10.0.0.0/24 dev eth1 proto kernel scope link src 10.0.0.6 metric 2
 169.254.0.0/16 dev eth0 scope link metric 1000
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_AT.UTF-8
 SHELL=/bin/bash
RfKill:
 0: brcmwl-0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: Upgraded to precise on 2012-09-16 (2 days ago)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 Kabelnetzwerkverbindung 1 63eccc25-c91c-4b0c-b5d0-cfa2826e8e64 802-3-ethernet 1348075052 Mit 19 Sep 2012 19:17:32 CEST yes no /org/freedesktop/NetworkManager/Settings/1
 Netzwerk von mir 7a94b131-8d95-44f8-909b-5f0ddc50b32e 802-11-wireless 1348075055 Mit 19 Sep 2012 19:17:35 CEST yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/1
 eth1 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.4.0 connected enabled enabled enabled enabled disabled
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: ALC272X Analog [ALC272X Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: ALC272X Analog [ALC272X Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: chef 1737 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf0400000 irq 16'
   Mixer name : 'Realtek ALC272X'
   Components : 'HDA:10ec0272,10250211,00100001'
   Controls : 17
   Simple ctrls : 9
CurrentDmesg: [ 57.488038] eth1: no IPv6 routers present
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=6d5cc98c-1b3b-4bb4-91f2-0df0f1772e5a
InstallationMedia: Ubuntu 10.04.4 LTS "Lucid Lynx" - Release i386 (20120214.2)
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 001 Device 002: ID 064e:a103 Suyin Corp. Acer/HP Integrated Webcam [CN0314]
MachineType: eMachines eMachines G625
NonfreeKernelModules: wl
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_AT.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic root=UUID=8a69e6c7-97a7-46f3-a667-bed968ab4990 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-31-generic N/A
 linux-backports-modules-3.2.0-31-generic N/A
 linux-firmware 1.79.1
RfKill:
 0: brcmwl-0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: precise running-unity
Uname: Linux 3.2.0-31-generic i686
UpgradeStatus: Upgraded to precise on 2012-09-16 (21 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 03/26/2009
dmi.bios.vendor: eMachines
dmi.bios.version: V1.08
dmi.board.name: HM50-YK
dmi.board.vendor: eMachines
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: eMachines
dmi.chassis.version: N/A
dmi.modalias: dmi:bvneMachines:bvrV1.08:bd03/26/2009:svneMachines:pneMachinesG625:pvrV1.08:rvneMachines:rnHM50-YK:rvrN/A:cvneMachines:ct10:cvrN/A:
dmi.product.name: eMachines G625
dmi.product.version: V1.08
dmi.sys.vendor: eMachines

[Mathieu Trudel-Lapierre (cyphermox)]

There's not indication I can find of a freeze in the logs, but that's not particularly surprising.

Regardless, this would be most likely caused by a kernel issue -- reassigning to 'linux'.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1053022

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.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.6 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. Please only remove that one tag and leave the other tags. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-quantal/

[Link (peter-zeschitz)]

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[Link (peter-zeschitz)]

Hello jsalisbury

I installed from your link http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-quantal/ the linux-image-3.6.0-030600-generic_3.6.0-030600.201209302035_i386.deb and linux-image-extra-3.6.0-030600-generic_3.6.0-030600.201209302035_i386.deb
but this hasn't any noticable affect on the computer for me (after new starting). The bug is still existing.

[penalvch (penalvch)]

Link, thank you for reporting this and helping make Ubuntu better. This sounds like an xorg crash as you can still move your mouse. Could you please capture the crash following https://help.ubuntu.com/community/DebuggingSystemCrash ?

[Link (peter-zeschitz)]

Hello penalvch
Sorry, i can't capture the crash. Beginning with that, that the wireless lan isn't working now, and some things more.
I testet the Ubuntu 12.10 on live usb. There the problem also exists.
I think that i will install another distribution on this laptop.

[Link (peter-zeschitz)]

i install an ubuntu 10.04 again, because the kernel bug concerns all actual distributions ...

[penalvch (penalvch)]

Link, thank you for your comments. As per http://support.emachines.com/em/driver/index.html your BIOS has an upgrade available (1.11). If you update to this, does this change anything?

If not, regarding your comments https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1053022/comments/22 :
"Hello penalvch Sorry, i can't capture the crash."

Could you please specify why specifically you could not capture the crash?

>"Beginning with that, that the wireless lan isn't working now, and some things more."

Thank you for mentioning this. Did these problems occur in a release prior to Precise?

>"I testet the Ubuntu 12.10 on live usb. There the problem also exists."

Thank you for testing this.

Thank you for your understanding.

Helpful bug reporting tips:
https://help.ubuntu.com/community/ReportingBugs

[Link (peter-zeschitz)]

ok
I reinstalled ubuntu 12.04 (all works correct again, except the lan-cable bug). (There were no prior bugs on the system.)

I was now able to make a ssh connection (before, i had some information deficits to do this).
I captured the error message over a connected other laptop. But i don't know if this is the error message from the sick machine, or just a message, that the connection broke - as impact of pulling out the lan cable of the sick machine, which is the only option to reproduce the crash.
Before i connected over ssh, i deacitvated the lan connection (not the wireless lan connection) over the network manager on the sick machine. I tried to force a wireless connection between the two computers (the connection runs maybe over a router).

I will make the BIOS update in some days with the help of a friend.

by the way: The bug occours also on Fedora 17

Thank you for your help!

[Nataraj (incoming-ubuntu)]

Have you checked to see weather the NetworkManager process is still running when this occurs, and if it is not, try plugging the cable back in and restarting NetworkManager. Also check /var/log/syslog.

I am seeing an issue where if I boot my 12.04.1 server with the cable unplugged, NetworkManager dies (it must be repeatedly crashing, because I think upstart tries to restart it). Also, if I unplug the cable while the server is up and then use nmcli to try to start a 3g modem interface, NetworkManager sometimes dies. In both cases, if I plug the cable back in, I can restart NetworkManager.

I can see that there's alot going on here, and I do run scripts that shutdown the interfaces when I update iptables lists, so I'm not sure I can easily provide instructions on how to reproduce this. It may be related to the RealTek 9139 driver.

My hardware is a tiny box with a VIA EDEN chip and RealTek RTL8139 interfaces.

I am in the process of moving, so can't spend alot of time debugging this right now, but will try to provide further information in the coming weeks.

[penalvch (penalvch)]

Nataraj, if you have a bug in Ubuntu, could you please file a new report by executing the following in a terminal:
ubuntu-bug network-manager

For more on this, please see the Ubuntu Bug Control and Ubuntu Bug Squad article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report may delay your problem being addressed as quickly as possible.

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Link (peter-zeschitz)]

The problem now has been solved by normal updates.