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[TG12 <1173581@xxxxxxxxxxxxxxxxxx>]

I have a similar report to the above.
I have a 2006 iMac that was running Debian (Kernel Panics), and now onto an Ubuntu distro (Less Kernel Panics).
The iMac has a Broadcom chip in it (b43), the Kernel Panics I now get are related to when I use the Chrome browser.

There doesnt seem to be any particular trigger for it.
I am running the AMD open source driver on a Radeon x1600.

The kernel Panics I have are not recoverable unless you hold down the
power button for 6 or so seconds. After the power button is pressed a
garbeled desktop comes with lines everywhere(nothing is recognisable).

I am not sure what issue this is exactly to with? Broadcomb43 or AMD or
the Kernel itself.

If anyone has a clue please reply!

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https://bugs.launchpad.net/bugs/1173581

Title:
  Ubuntu 13.04 full system crash/kernel panic

Status in “linux” package in Ubuntu:
  Won't Fix

Bug description:
  Ubuntu 13.04 (with latest updates) crashes after a while every time I
  start it, the screen freezes, keyboard and mouse/touchpad do not
  generate any reponse. Ive tried to follow
  https://help.ubuntu.com/community/DebuggingSystemCrash to provide as
  much information as possible.

  I'm using:
  - Dell Studio 1558 (Intel core i3, ATI Mobility Radeon HD 5430/5450/5470)

  I've tried:
  - switching to command line using Ctrl-F1, no response;
  - Prt Scr + R E I S U B, no response;
  - monitoring /var/log/syslog and dmesg, I can't find anything that happened at the moment of the crash that might have caused it;
  - running a memory check (for 45 minutes), it passed one time and then I let it continue for a while longer, but no errors showed up;
  - disconnecting everyting attached to the laptop (power chord, wireless mouse), but the laptop still crashes;
  - using different videocard drivers: fglrx, fglrx-updates and fglrx-12 (from the xorg-edgers ppa); does not appear to make any difference, although the fglrx drivers seem to increase time before the system crashes (but they ironically show a 'AMD unsupported hardware' watermark in the corner of the screen);
  - remotely monitoring dmesg and /var/log/syslog over ssh, but ssh also goes crashes, the last reports are the same as on the laptop;
  -  installing the 32-bit version of Ubuntu 13.04, same problem as on 64-bit.
  - updating Dell BIOS to A12

  I'm not sure what else I can do to get more information on the crash,
  I'm sorry this is all rather vague. I've tried to gather as much
  information as possible. If there is anyting else I can do, please
  ask.

  UPDATE: I'm now using the open source videocard drivers, and now when the system crashes I get a kernel panic (unfortunatelly I seem to be unable to find the full message in a log, if there are any at all). I'm not sure if the kernel panic is the same crash as under the other videocard drivers, but the effect appears to be the same, with the exception that the screen does not freeze, but switches to text-mode (still accepts no keyboard input).
  --- 
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  elco       1953 F.... pulseaudio
  CRDA:
   country NL:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
   	(5250 - 5330 @ 40), (N/A, 20), NO-OUTDOOR, DFS
   	(5490 - 5710 @ 40), (N/A, 27), DFS
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=d4e85ebe-079f-44d5-af90-efd4595f5095
  InstallationDate: Installed on 2013-04-26 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
  MachineType: Dell Inc. Studio 1558
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=nl_NL.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=9a065c8b-ac87-49f1-b417-d221a205181f ro quiet splash pcie_aspm=force acpi_backlight=vendor vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  Tags:  raring
  Uname: Linux 3.8.0-19-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 03/30/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A12
  dmi.board.name: 0874P6
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A12
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A12
  dmi.modalias: dmi:bvnDellInc.:bvrA12:bd03/30/2011:svnDellInc.:pnStudio1558:pvrA12:rvnDellInc.:rn0874P6:rvrA12:cvnDellInc.:ct8:cvrA12:
  dmi.product.name: Studio 1558
  dmi.product.version: A12
  dmi.sys.vendor: Dell Inc.

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