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[Launchpad Bug Tracker <1016731@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1016731

Title:
  cx88xx freezes kernel when using SMP

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  After upgrading to ubuntu 12.08 (with its 3.2.x kernel), I was not able to boot anymore without at least one of those kernel parameters:
  nolapic
  nosmp
  maxcpus=1
  nr_cpus=1

  Obviously, reducing an SMP maching to single core wasn't really funny
  for me, so I tried to find the kernel module which was responsible.
  Finally, I found this line which is necessary to boot my system with
  SMP and without freezing:

  modprobe.blacklist=cx88xx

  uname -a: Linux legolas 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
  /proc/version_signature: Ubuntu 3.2.0-26.41-generic 3.2.19
  lsb_release -rd: Ubuntu 12.04 LTS   Release: 12.04

  
  The freeze usually happens at the time when file systems get mounted. If one filesystem needs to be checked, the system sometimes boots up without problems, but not always (seems to be a running condition). I didn't find a way to get more useful log information because the system freezes before files are written to disk and even with "--verbose" and without "quiet splash" kernel options I didn't get better information for this bug report.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu9
  Architecture: amd64
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'Audigy2'/'SB Audigy 2 Platinum [SB0240P] (rev.4, serial:0x10021102) at 0xa000, irq 18'
     Mixer name	: 'SigmaTel STAC9721,23'
     Components	: 'AC97a:83847609'
     Controls      : 214
     Simple ctrls  : 49
  Card1.Amixer.info:
   Card hw:1 'Intel'/'HDA Intel at 0xe8000000 irq 45'
     Mixer name	: 'Realtek ALC888'
     Components	: 'HDA:10ec0888,1458e601,00100001'
     Controls      : 47
     Simple ctrls  : 21
  Card2.Amixer.info:
   Card hw:2 'HDMI'/'HDA ATI HDMI at 0xe1010000 irq 46'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100000'
     Controls      : 6
     Simple ctrls  : 1
  Card2.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Card3.Amixer.info:
   Card hw:3 'CX8811'/'Conexant CX8811 at 0xe5000000'
     Mixer name	: 'CX88'
     Components	: ''
     Controls      : 4
     Simple ctrls  : 3
  DistroRelease: Ubuntu 12.04
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. 945P-DS3
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic root=/dev/mapper/vg00-lv_system_precise ro --verbose modprobe.blacklist=cx88xx
  ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/daniel not ours.
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-26-generic N/A
   linux-backports-modules-3.2.0-26-generic  N/A
   linux-firmware                            1.79
  RfKill:
   
  Tags:  precise
  Uname: Linux 3.2.0-26-generic x86_64
  UpgradeStatus: Upgraded to precise on 2012-05-05 (48 days ago)
  UserGroups:
   
  dmi.bios.date: 05/25/2007
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F5
  dmi.board.name: 945P-DS3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF5:bd05/25/2007:svnGigabyteTechnologyCo.,Ltd.:pn945P-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945P-DS3:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: 945P-DS3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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