Public bug reported:

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.

PROBLEM #############################################
Machine connects to net using "ppp0" (modem on phone), then if you disconnect  
the modem "ppp0" & try to reconnect, the Kernel Panics & crashes.

Machine connects to net using "ppp0" (modem on phone), 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

I really apologize for not able to provide Apport logs as I have
uninstalled it a long time ago. I'm not a hard core techie, I'm self
taught Linux user & enthusiast. My main machine is Ubuntu since 2007.




_________________________________________________

below details are provided using "HardInfo 0.5.1" :

ComputerSummary
Computer
Processor               Intel(R) Celeron(R) M processor 1.40GHz
Memory                  1536MB (498MB used)
Operating System        Ubuntu 12.04.2 LTS
User Name               ubuntu (ubuntu)
Date/Time               Mon 04 Mar 2013 06:13:13 PM IST
Display
Resolution              1024x768 pixels
OpenGL Renderer         Unknown
X11 Vendor              The X.Org Foundation
Multimedia
Audio Adapter           ICH4 - Intel ICH6
Input Devices
 Lid Switch     
 Power Button   
 Power Button   
 AT Translated Set 2 keyboard   
 Logitech USB Receiver  
 Logitech USB Receiver  
 PS/2 Mouse     
 AlpsPS/2 ALPS GlidePoint       
 Video Bus      
Printers
No printers found       
SCSI Disks
ATA SAMSUNG HM160HC     
MATSHITA UJDA750 DVD/CDRW       
Operating System
Version
Kernel                  Linux 3.7.10-030710-generic (i686)
Compiled                #201302271235 SMP Wed Feb 27 17:52:19 UTC 2013
C Library               Unknown
Default C Compiler      GNU C Compiler version 4.6.3 (Ubuntu/Linaro 
4.6.3-1ubuntu5) 
Distribution            Ubuntu 12.04.2 LTS
Current Session
Computer Name           HSB
User Name               ubuntu (ubuntu)
Home Directory          /home/ubuntu
Desktop Environment     Unity (ubuntu)
Misc
Uptime  1 hour, 17 minutes
Load Average    0.25, 0.18, 0.23
Kernel Modules
Loaded Modules
btrfs   
libcrc32c               CRC32c (Castagnoli) calculations
ufs     
qnx4    
hfsplus Extended Macintosh Filesystem
hfs     
minix   
ntfs    NTFS 1.2/3.x driver - Copyright (c) 2001-2011 Anton Altaparmakov and 
Tuxera Inc.
msdos   MS-DOS filesystem support
jfs     The Journaled Filesystem (JFS)
xfs     SGI XFS with ACLs, security attributes, realtime, large block/inode 
numbers, no debug enabled
reiserfs        ReiserFS journaled filesystem
ext2    Second Extended Filesystem
xt_limit        Xtables: rate-limit match
xt_tcpudp       Xtables: TCP, UDP and UDP-Lite match
xt_LOG  Xtables: IPv4/IPv6 packet logging
ipt_MASQUERADE  Xtables: automatic-address SNAT
xt_DSCP Xtables: DSCP/TOS field modification
ipt_REJECT      Xtables: packet "rejection" target for IPv4
nf_conntrack_irc        IRC (DCC) connection tracking helper
nf_conntrack_ftp        ftp connection tracking helper
xt_state        ip[6]_tables connection tracking state match module
ppp_deflate     
zlib_deflate    
bsd_comp        
ppp_async       
crc_ccitt       CRC-CCITT calculations
snd_hrtimer     ALSA hrtimer backend
pci_stub        
vboxpci Oracle VM VirtualBox PCI access Driver
vboxnetadp      Oracle VM VirtualBox Network Adapter Driver
vboxnetflt      Oracle VM VirtualBox Network Filter Driver
vboxdrv Oracle VM VirtualBox Support Driver
bnep    Bluetooth BNEP ver 1.3
rfcomm  Bluetooth RFCOMM ver 1.11
parport_pc      PC-style parallel port driver
ppdev   
iptable_nat     
nf_conntrack_ipv4       
nf_defrag_ipv4  
nf_nat_ipv4     
nf_nat  
nf_conntrack    
iptable_mangle  iptables mangle table
binfmt_misc     
iptable_filter  iptables filter table
ip_tables       IPv4 packet filter
x_tables        {ip,ip6,arp,eb}_tables backend module
snd_intel8x0    Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7012; 
Ali 5455
snd_ac97_codec  Universal interface for Audio Codec '97
ac97_bus        
snd_pcm Midlevel PCM code for ALSA.
snd_seq_midi    Advanced Linux Sound Architecture sequencer MIDI synth.
snd_rawmidi     Midlevel RawMidi code for ALSA.
btusb   Generic Bluetooth USB driver ver 0.6
snd_seq_midi_event      MIDI byte <-> sequencer event coder
i915    Intel Graphics
snd_seq Advanced Linux Sound Architecture sequencer.
bluetooth       Bluetooth Core ver 2.16
snd_timer       ALSA timer interface
ipw2200 Intel(R) PRO/Wireless 2200/2915 Network Driver
snd_seq_device  ALSA sequencer device management
libipw  802.11 data/management/control stack
pcmcia  PCMCIA Driver Services
joydev  Joystick device interfaces
drm_kms_helper  DRM KMS helper
yenta_socket    
snd     Advanced Linux Sound Architecture driver for soundcards.
drm     DRM shared core routines
cfg80211        wireless configuration support
tifm_7xx1       TI FlashMedia host driver
tifm_core       TI FlashMedia core driver
pcmcia_rsrc     
soundcore       Core sound module
pcmcia_core     Linux Kernel Card Services
lib80211        common routines for IEEE802.11 drivers
microcode       Microcode Update Driver
snd_page_alloc  Memory allocator for ALSA system.
psmouse PS/2 mouse driver
lpc_ich LPC interface for Intel ICH
serio_raw       Raw serio driver
i2c_algo_bit    I2C-Bus bit-banging algorithm
mac_hid 
video   ACPI Video Driver
lp      
parport 
hid_generic     HID generic driver
usbhid  USB HID core driver
hid     
firewire_ohci   Driver for PCI OHCI IEEE1394 controllers
firewire_core   Core IEEE1394 transaction logic
sdhci_pci       Secure Digital Host Controller Interface PCI driver
sdhci   Secure Digital Host Controller Interface core driver
crc_itu_t       CRC ITU-T V.41 calculations
sky2    Marvell Yukon 2 Gigabit Ethernet driver
Boots
Boots
Languages
Available Languages
de_CH.utf8      English locale for Hong Kong
en_AG   English language locale for Antigua and Barbuda
en_AG.utf8      English language locale for Antigua and Barbuda
en_AU.utf8      English locale for Australia
en_BW.utf8      English locale for Botswana
en_CA.utf8      English locale for Canada
en_DK.utf8      English locale for Denmark
en_GB.utf8      English locale for Britain
en_HK.utf8      English locale for Hong Kong
en_IE.utf8      English locale for Ireland
en_IN   English language locale for India
en_IN.utf8      English language locale for India
en_NG   English locale for Nigeria
en_NG.utf8      English locale for Nigeria
en_NZ.utf8      English locale for New Zealand
en_PH.utf8      English language locale for Philippines
en_SG.utf8      English language locale for Singapore
en_US.utf8      English locale for the USA
en_ZA.utf8      English locale for South Africa
en_ZM   English locale for Zambia
en_ZM.utf8      English locale for Zambia
en_ZW.utf8      English locale for Zimbabwe
hi_IN   Hindi language locale for India
hi_IN.utf8      Hindi language locale for India
pa_IN   Punjabi language locale for Indian Punjabi(Gurmukhi)
pa_IN.utf8      Punjabi language locale for Indian Punjabi(Gurmukhi)
pa_PK   Punjabi (Shahmukhi) Language Locale for Pakistan
pa_PK.utf8      Punjabi (Shahmukhi) Language Locale for Pakistan
zh_CN.utf8      Chinese locale for Peoples Republic of China
zh_SG.utf8      Chinese language locale for Singapore
Filesystems
Mounted File Systems
/dev/sda2       /       38.13 % (11.6 GiB of 18.8 GiB)
udev    /dev    0.00 % (743.1 MiB of 743.1 MiB)
tmpfs   /tmp    0.00 % (750.3 MiB of 750.3 MiB)
tmpfs   /run    0.37 % (299.0 MiB of 300.1 MiB)
none    /run/lock       0.23 % (5.0 MiB of 5.0 MiB)
none    /run/shm        0.01 % (750.2 MiB of 750.3 MiB)
tmpfs   /var/tmp        0.00 % (750.3 MiB of 750.3 MiB)
tmpfs   /var/log        0.08 % (749.7 MiB of 750.3 MiB)
/dev/sda3       /home   84.37 % (19.2 GiB of 123.0 GiB)
Display
Display
Resolution      1024x768 pixels
Vendor  The X.Org Foundation
Version 1.11.3
Monitors
Monitor 0       1024x768 pixels
Extensions
BIG-REQUESTS    
Composite       
DAMAGE  
DOUBLE-BUFFER   
DPMS    
DRI2    
GLX     
Generic Event Extension 
MIT-SCREEN-SAVER        
MIT-SHM 
RANDR   
RECORD  
RENDER  
SECURITY        
SGI-GLX 
SHAPE   
SYNC    
X-Resource      
XC-MISC 
XFIXES  
XFree86-DGA     
XFree86-VidModeExtension        
XINERAMA        
XInputExtension 
XKEYBOARD       
XTEST   
XVideo  
OpenGL
Vendor  Unknown
Renderer        Unknown
Version Unknown
Direct Rendering        No
Environment Variables
Environment Variables
GNOME_KEYRING_PID       1725
USER    ubuntu
LANGUAGE        en_US:en
LC_TIME en_US.UTF-8
COMPIZ_CONFIG_PROFILE   ubuntu
HOME    /home/ubuntu
DESKTOP_SESSION ubuntu
XDG_SESSION_COOKIE      
7a3bfd2d46e78bee0eeb0fc10000000b-1362396346.821460-120337200
XDG_SEAT_PATH   /org/freedesktop/DisplayManager/Seat0
LC_MONETARY     en_US.UTF-8
GNOME_KEYRING_CONTROL   /tmp/keyring-Bxlr74
MANDATORY_PATH  /usr/share/gconf/ubuntu.mandatory.path
LOGNAME ubuntu
DEFAULTS_PATH   /usr/share/gconf/ubuntu.default.path
PATH    
/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
XDG_SESSION_PATH        /org/freedesktop/DisplayManager/Session0
LC_ADDRESS      en_US.UTF-8
DISPLAY :0
LANG    en_US.UTF-8
LC_TELEPHONE    en_US.UTF-8
XAUTHORITY      /home/ubuntu/.Xauthority
SHELL   /bin/bash
LC_NAME en_US.UTF-8
GDMSESSION      ubuntu
UDEdir  
LC_MEASUREMENT  en_US.UTF-8
LC_IDENTIFICATION       en_US.UTF-8
PWD     /home/ubuntu
XDG_DATA_DIRS   /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/
XDG_CONFIG_DIRS /etc/xdg/xdg-ubuntu:/etc/xdg
LC_NUMERIC      en_US.UTF-8
LC_PAPER        en_US.UTF-8
SSH_AUTH_SOCK   /tmp/keyring-Bxlr74/ssh
SSH_AGENT_PID   1786
DBUS_SESSION_BUS_ADDRESS        
unix:abstract=/tmp/dbus-6rGsQC1PSD,guid=a61d87fb9047e422fee50bc400000021
GNOME_DESKTOP_SESSION_ID        this-is-deprecated
SESSION_MANAGER local/HSB:@/tmp/.ICE-unix/1736,unix/HSB:/tmp/.ICE-unix/1736
XDG_CURRENT_DESKTOP     Unity
GPG_AGENT_INFO  /tmp/keyring-Bxlr74/gpg:0:1
GIO_LAUNCHED_DESKTOP_FILE       /usr/share/applications/hardinfo.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID   6796
Users
Users
root    root
daemon  daemon
bin     bin
sys     sys
sync    sync
games   games
man     man
lp      lp
mail    mail
news    news
uucp    uucp
proxy   proxy
www-data        www-data
backup  backup
list    Mailing List Manager
irc     ircd
gnats   Gnats Bug-Reporting System (admin)
nobody  nobody
libuuid 
syslog  
messagebus      
colord  colord colour management daemon
lightdm Light Display Manager
avahi-autoipd   Avahi autoip daemon
avahi   Avahi mDNS daemon
usbmux  usbmux daemon
pulse   PulseAudio daemon
rtkit   RealtimeKit
hplip   HPLIP system user
saned   
ubuntu  ubuntu
timidity        TiMidity++ MIDI sequencer service
dnsmasq dnsmasq
mysql   MySQL Server
sshd    
postgres        PostgreSQL administrator
nginx   nginx user

DevicesProcessor
Processor
Name    Intel(R) Celeron(R) M processor 1.40GHz
Family, model, stepping 6, 13, 8 (Pentium III/Pentium III Xeon/Celeron)
Vendor  Intel
Configuration
Cache Size      1024kb
Frequency       1396.58MHz
BogoMIPS        2793.16
Byte Order      Little Endian
Features
FDIV Bug        no
HLT Bug no
F00F Bug        no
Coma Bug        no
Has FPU yes
Cache
Cache information not available 
Capabilities
fpu     Floating Point Unit
vme     Virtual 86 Mode Extension
de      Debug Extensions - I/O breakpoints
pse     Page Size Extensions (4MB pages)
tsc     Time Stamp Counter and RDTSC instruction
msr     Model Specific Registers
pae     Physical Address Extensions
mce     Machine Check Architeture
cx8     CMPXCHG8 instruction
apic    Advanced Programmable Interrupt Controller
sep     Fast System Call (SYSENTER/SYSEXIT)
mtrr    Memory Type Range Registers
pge     Page Global Enable
mca     Machine Check Architecture
cmov    Conditional Move instruction
clflush Cache Line Flush instruction
dts     Debug Store
acpi    Thermal Monitor and Software Controlled Clock
mmx     MMX technology
fxsr    FXSAVE and FXRSTOR instructions
sse     SSE instructions
sse2    SSE2 (WNI) instructions
ss      Self Snoop
tm      Thermal Monitor
pbe     Pending Break Enable
nx      No-execute Page Protection
bts     Branch Trace Store
Memory
Memory
Total Memory    1536608 kB
Free Memory     140684 kB
Buffers 69888 kB
Cached  897472 kB
Cached Swap     0 kB
Active  685148 kB
Inactive        647832 kB
Active(anon)    366584 kB
Inactive(anon)  202056 kB
Active(file)    318564 kB
Inactive(file)  445776 kB
Unevictable     0 kB
Mlocked 0 kB
High Memory     650120 kB
Free High Memory        8420 kB
Low Memory      886488 kB
Free Low Memory 132264 kB
Virtual Memory  0 kB
Free Virtual Memory     0 kB
Dirty   52 kB
Writeback       0 kB
AnonPages       365636 kB
Mapped  82280 kB
Shmem   203004 kB
Slab    37380 kB
SReclaimable    26120 kB
SUnreclaim      11260 kB
KernelStack     2312 kB
PageTables      5336 kB
NFS_Unstable    0 kB
Bounce  0 kB
WritebackTmp    0 kB
CommitLimit     768304 kB
Committed_AS    1652344 kB
VmallocTotal    122880 kB
VmallocUsed     16276 kB
VmallocChunk    98960 kB
HardwareCorrupted       0 kB
AnonHugePages   0 kB
HugePages_Total 0
HugePages_Free  0
HugePages_Rsvd  0
HugePages_Surp  0
Hugepagesize    2048 kB
DirectMap4k     12280 kB
DirectMap2M     901120 kB
PCI Devices
PCI Devices
Host bridge     Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor 
to DRAM Controller (rev 03)
VGA compatible controller       Intel Corporation Mobile 915GM/GMS/910GML 
Express Graphics Controller (rev 03) (prog-if 00 [VGA controller])
Display controller      Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller (rev 03)
PCI bridge      Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI 
Express Port 1 (rev 03) (prog-if 00 [Normal decode])
USB controller  Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#1 (rev 03) (prog-if 00 [UHCI])
USB controller  Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#2 (rev 03) (prog-if 00 [UHCI])
USB controller  Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#3 (rev 03) (prog-if 00 [UHCI])
USB controller  Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#4 (rev 03) (prog-if 00 [UHCI])
USB controller  Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI 
Controller (rev 03) (prog-if 20 [EHCI])
PCI bridge      Intel Corporation 82801 Mobile PCI Bridge (rev d3) (prog-if 01 
[Subtractive decode])
Multimedia audio controller     Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) AC'97 Audio Controller (rev 03)
Modem   Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem 
Controller (rev 03) (prog-if 00 [Generic])
ISA bridge      Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
IDE interface   Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
SMBus   Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller 
(rev 03)
Ethernet controller     Marvell Technology Group Ltd. 88E8036 PCI-E Fast 
Ethernet Controller (rev 10)
Network controller      Intel Corporation PRO/Wireless 2200BG [Calexico2] 
Network Connection (rev 05)
CardBus bridge  Texas Instruments PCIxx21/x515 Cardbus Controller
FireWire (IEEE 1394)    Texas Instruments OHCI Compliant IEEE 1394 Host 
Controller (prog-if 10 [OHCI])
Mass storage controller Texas Instruments PCIxx21 Integrated FlashMedia 
Controller
SD Host controller      Texas Instruments 
PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
USB Devices
Printers
Printers
No printers found       
Battery
No batteries
No batteries found on this system       
Sensors
Input Devices
Input Devices
 Lid Switch     
 Power Button   
 Power Button   
 AT Translated Set 2 keyboard   
 Logitech USB Receiver  
 Logitech USB Receiver  
 PS/2 Mouse     
 AlpsPS/2 ALPS GlidePoint       
 Video Bus      
Storage
SCSI Disks
ATA SAMSUNG HM160HC     
MATSHITA UJDA750 DVD/CDRW       
DMI
BIOS
Date    10/25/2006
Vendor  TOSHIBA (www.toshiba.com)
Version V2.80
Board
Name    EAT10/EAT20
Vendor  TOSHIBA (www.toshiba.com)
Resources
I/O Ports
0000-001f       dma1
0020-0021       pic1
0040-0043       timer0
0050-0053       timer1
0060-0060       keyboard
0062-0062       EC data
0064-0064       keyboard
0066-0066       EC cmd
0070-0077       rtc0
0080-008f       dma page reg
00a0-00a1       pic2
00c0-00df       dma2
00f0-00ff       fpu
0170-0177       Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
 0170-0177      ata_piix
01f0-01f7       Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
 01f0-01f7      ata_piix
0376-0376       Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
 0376-0376      ata_piix
03f6-03f6       Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
 03f6-03f6      ata_piix
0800-080f       pnp 00:05
0cf8-0cff       PCI conf1
1000-107f       Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
 1000-107f      pnp 00:05
 1000-1003      ACPI PM1a_EVT_BLK
 1004-1005      ACPI PM1a_CNT_BLK
 1008-100b      ACPI PM_TMR
 1010-1015      ACPI CPU throttle
 1020-1020      ACPI PM2_CNT_BLK
 1028-102f      ACPI GPE0_BLK
 1030-1033      iTCO_wdt
 1060-107f      iTCO_wdt
1180-11bf       Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
 1180-11bf      pnp 00:05
1640-164f       pnp 00:05
1800-1807       Intel Corporation Mobile 915GM/GMS/910GML Express Graphics 
Controller (rev 03) (prog-if 00 [VGA controller])
1820-183f       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#1 (rev 03) (prog-if 00 [UHCI])
 1820-183f      uhci_hcd
1840-185f       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#2 (rev 03) (prog-if 00 [UHCI])
 1840-185f      uhci_hcd
1860-187f       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#3 (rev 03) (prog-if 00 [UHCI])
 1860-187f      uhci_hcd
1880-189f       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI 
#4 (rev 03) (prog-if 00 [UHCI])
 1880-189f      uhci_hcd
18b0-18bf       Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 03) 
(prog-if 80 [Master])
 18b0-18bf      ata_piix
18c0-18ff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 
Audio Controller (rev 03)
 18c0-18ff      Intel ICH6
1c00-1cff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 
Audio Controller (rev 03)
 1c00-1cff      Intel ICH6
2000-207f       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 
Modem Controller (rev 03) (prog-if 00 [Generic])
20a0-20bf       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus 
Controller (rev 03)
2400-24ff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 
Modem Controller (rev 03) (prog-if 00 [Generic])
3000-3fff       PCI Bus 0000:02
 3000-30ff      Marvell Technology Group Ltd. 88E8036 PCI-E Fast Ethernet 
Controller (rev 10)
 3000-30ff      Marvell Yukon 2 Gigabit Ethernet driver
4000-4fff       PCI Bus 0000:06
 4000-40ff      PCI CardBus 0000:07
 4400-44ff      PCI CardBus 0000:07
fe00-fe7f       pnp 00:01
fe80-feff       pnp 00:01
ff00-ff7f       pnp 00:01
Memory
00000000-0000ffff       reserved
00010000-0009f7ff       System RAM
0009f800-0009ffff       reserved
000a0000-000bffff       Video RAM area
000c0000-000c7fff       Video ROM
000ce800-000cf7ff       Adapter ROM
000dc000-000fffff       reserved
 000f0000-000fffff      System ROM
00100000-5f6dffff       System RAM
 01000000-01610a4e      Kernel code
 01610a4f-0190aa3f      Kernel data
 019d5000-01aaffff      Kernel bss
5f6e0000-5f6e9fff       ACPI Tables
5f6ea000-5f6fffff       ACPI Non-volatile Storage
5f700000-5fffffff       reserved
60000000-63ffffff       PCI Bus 0000:06
 60000000-63ffffff      PCI CardBus 0000:07
64000000-6407ffff       Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller (rev 03)
64080000-64080fff       Intel Flush Page
68000000-6bffffff       PCI CardBus 0000:07
b0000000-b003ffff       Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller (rev 03) (prog-if 00 [VGA controller])
b0040000-b00403ff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB2 EHCI Controller (rev 03) (prog-if 20 [EHCI])
 b0040000-b00403ff      ehci_hcd
b0040400-b00404ff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
AC'97 Audio Controller (rev 03)
 b0040400-b00404ff      Intel ICH6
b0040800-b00409ff       Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
AC'97 Audio Controller (rev 03)
 b0040800-b00409ff      Intel ICH6
b0080000-b00fffff       Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller (rev 03) (prog-if 00 [VGA controller])
b4000000-b7ffffff       PCI Bus 0000:02
 b4000000-b4003fff      Marvell Technology Group Ltd. 88E8036 PCI-E Fast 
Ethernet Controller (rev 10)
 b4000000-b4003fff      Marvell Yukon 2 Gigabit Ethernet driver
b8000000-b80fffff       PCI Bus 0000:06
 b8000000-b8003fff      Texas Instruments OHCI Compliant IEEE 1394 Host 
Controller (prog-if 10 [OHCI])
 b8004000-b8005fff      Texas Instruments PCIxx21 Integrated FlashMedia 
Controller
 b8004000-b8005fff      TI FlashMedia host driver
 b8006000-b8006fff      Intel Corporation PRO/Wireless 2200BG [Calexico2] 
Network Connection (rev 05)
 b8006000-b8006fff      Intel(R) PRO/Wireless 2200/2915 Network Driver
 b8007000-b8007fff      Texas Instruments PCIxx21/x515 Cardbus Controller
 b8007000-b8007fff      yenta_socket
 b8008000-b80087ff      Texas Instruments OHCI Compliant IEEE 1394 Host 
Controller (prog-if 10 [OHCI])
 b8008000-b80087ff      Driver for PCI OHCI IEEE1394 controllers
 b8008800-b80088ff      Texas Instruments 
PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
 b8008800-b80088ff      mmc2
 b8008c00-b8008cff      Texas Instruments 
PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
 b8008c00-b8008cff      mmc1
 b8009000-b80090ff      Texas Instruments 
PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
 b8009000-b80090ff      mmc0
c0000000-cfffffff       Intel Corporation Mobile 915GM/GMS/910GML Express 
Graphics Controller (rev 03) (prog-if 00 [VGA controller])
d0000000-d3ffffff       PCI Bus 0000:02
e0000000-f0005fff       reserved
 e0000000-efffffff      PCI MMCONFIG 0000 [bus 00-ff]
 e0000000-efffffff      pnp 00:01
 f0000000-f0003fff      pnp 00:01
 f0004000-f0004fff      pnp 00:01
 f0005000-f0005fff      pnp 00:01
f0008000-f000bfff       reserved
 f0008000-f000bfff      pnp 00:01
 f000b410-f000b414      iTCO_wdt
fec00000-fec003ff       IOAPIC 0
fed20000-fed8ffff       reserved
 fed20000-fed8ffff      pnp 00:01
fee00000-fee00fff       Local APIC
ff000000-ffffffff       reserved
DMA
 4      cascade

NetworkInterfaces
Network Interfaces
ppp0    3.56MiB 0.93MiB 101.218.143.111
vboxnet0        0.00MiB 0.00MiB 
lo      0.12MiB 0.12MiB 127.0.0.1
eth0    0.00MiB 0.00MiB 
eth1    0.00MiB 0.00MiB 
IP Connections
Connections
0.0.0.0:139     LISTEN  0.0.0.0:*       tcp
0.0.0.0:53              0.0.0.0:*       udp
0.0.0.0:22      LISTEN  0.0.0.0:*       tcp
127.0.0.1:631   LISTEN  0.0.0.0:*       tcp
0.0.0.0:445     LISTEN  0.0.0.0:*       tcp
101.218.143.111:47394   CLOSE_WAIT      91.189.89.144:80        tcp
101.218.143.111:53171   ESTABLISHED     173.194.38.149:443      tcp
:::139  LISTEN  :::*    tcp6
:::53           :::*    udp6
:::22   LISTEN  :::*    tcp6
::1:631 LISTEN  :::*    tcp6
:::445  LISTEN  :::*    tcp6
0.0.0.0:5353            0.0.0.0:*       udp
0.0.0.0:52140           0.0.0.0:*       udp
0.0.0.0:53              0.0.0.0:*       udp
0.0.0.0:137             0.0.0.0:*       udp
0.0.0.0:138             0.0.0.0:*       udp
:::44711                :::*    udp6
:::5353         :::*    udp6
:::53           :::*    udp6
Routing Table
IP routing table
0.0.0.0 / 10.64.64.64   0.0.0.0 UG      ppp0
10.64.64.64 / 0.0.0.0   255.255.255.255 UH      ppp0
169.254.0.0 / 0.0.0.0   255.255.0.0     U       ppp0
ARP Table
ARP Table
DNS Servers
Name servers
127.0.0.1       
208.67.222.222  
8.8.8.8 
Statistics
IP
5504    Total packets received
0       Incoming packets discarded
0       Incoming packets discarded
5466    Incoming packets delivered
5855    Requests sent out
3       Outgoing packets dropped
2       Reassemblies required
2       Reassemblies required
1       Packets reassembled ok
ICMP
0       ICMP messages failed
0       ICMP messages failed
22      ICMP messages sent
0       ICMP messages failed
ICMPMSG
TCP
327     Active connections openings
3       Failed connection attempts
3       Failed connection attempts
6       Connection resets received
1       Connections established
5253    Segments received
5460    Segments send out
146     Segments retransmited
134     Bad segments received.
358     Resets sent
UDP
193     Packets received
22      Packets to unknown port received.
0       Packet receive errors
227     Packets sent
UDPLITE
TCPEXT
96      TCP sockets finished time wait in fast timer
244     Delayed acks sent
1       Packets directly queued to recvmsg prequeue.
19600   Bytes directly received in process context from prequeue
1908    Packet headers predicted
466     Acknowledgments not containing data payload received
601     Predicted acknowledgments
60      Congestion windows recovered without slow start after partial ack
8       Timeouts in loss state
21      Retransmits in slow start
111     Other TCP timeouts
23      Connections reset due to unexpected data
6       Connections reset due to early user close
IPEXT
Shared Directories
SAMBA
Public  /home/ubuntu/Public
NFS

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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https://bugs.launchpad.net/bugs/1144322

Title:
  Kernel Panic in 3.8.0, 3.8.1 & 3.8.2 when diconnecting from network
  manager,  using ppp0 to connect to net

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