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[Bug 1144322]


Yes, 3.12-release has the same behavior as the release candidates - they
no longer crash the machine but it was not fixed correctly/completely
(meaning that behavior is not quite correct.)  Will have to check future
versions to find one that behaves correctly.

Debugging networkmanager will be ugly... Sigh.

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  [Toshiba Satellite A80] Kernel 3.8.x Panic when disconnecting from
  network manager via ppp0

Status in “linux” package in Ubuntu:
Status in “linux” package in Arch Linux:
Status in Gentoo Linux:

Bug description:
  Using: "Ubuntu 12.04 (precise) 32-bit" Machine: Laptop / old Toshiba / Celeron processor
  Installing Kernel from: "http://kernel.ubuntu.com/~kernel-ppa/mainline/";

  Apport disabled and uninstalled, so can't provide debug/log details
  (this to make the machine run a bit faster, have been doing so since
  10.04). Have no problem with Kernel upto 3.7.10 (have been upgrading
  to Kernel 3.5/3.6/3.7/3.8, when ever new builds are available) But
  when using Kernel 3.8.0/3.8.1/3.8.2, get Kernel Panic & machine
  crashes & freezes, have to hard boot.

  Machine connects to net using "ppp0" (modem on phone), then if you
  disconnect  the modem "ppp0" & try to reconnect, the Kernel Panics &
  crashes, or then if you disconnect by unchecking "Enable Networking" &
  then rechecking "Enable Networking", the Kernel Panics & crashes.

  First faced this problem with Kernel 3.8.0 so went back to using
  3.7.9, then same story repeated with Kernel 3.8.1 & 3.8.2, currently
  using Kernel 3.7.10. Think there is some REGRESSION in Kernel 3.8

  below details are provided using "HardInfo 0.5.1" :
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.3
  Architecture: i386
   /dev/snd/controlC0:  ubuntu     1880 F.... pulseaudio
   /dev/snd/seq:        timidity   1424 F.... timidity
   Card hw:0 'ICH6'/'Intel ICH6 with ALC250 at irq 17'
     Mixer name	: 'Realtek ALC250 rev 2'
     Components	: 'AC97a:414c4752'
     Controls      : 33
     Simple ctrls  : 21
  DistroRelease: Ubuntu 12.04
  MachineType: TOSHIBA Satellite A80
  MarkForUpload: True
  Package: linux (not installed)
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-51-generic-pae root=UUID=4dda5c0a-3583-45f5-b6c4-b5aef19935c8 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-51.77-generic-pae 3.2.48
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/ubuntu not ours.
   No PulseAudio daemon running, or not running as session daemon.
   linux-restricted-modules-3.2.0-51-generic-pae N/A
   linux-backports-modules-3.2.0-51-generic-pae  N/A
   linux-firmware                                1.79.6
  Tags:  precise
  Uname: Linux 3.2.0-51-generic-pae i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/25/2006
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: V2.80
  dmi.board.name: EAT10/EAT20
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Null
  dmi.chassis.asset.tag: *
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnTOSHIBA:bvrV2.80:bd10/25/2006:svnTOSHIBA:pnSatelliteA80:pvrPSA80L-043003:rvnTOSHIBA:rnEAT10/EAT20:rvrNull:cvnTOSHIBA:ct10:cvrN/A:
  dmi.product.name: Satellite A80
  dmi.product.version: PSA80L-043003
  dmi.sys.vendor: TOSHIBA

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