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" :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1144322/+attachment/3761201/+files/hardinfo
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1880 F.... pulseaudio
/dev/snd/seq: timidity 1424 F.... timidity
Card0.Amixer.info:
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)
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
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
PulseList:
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.
RelatedPackageVersions:
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)
UserGroups:
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
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1144322
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.