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[Bug 1230041] Re: i915_hotplug_work_func cause system crash

  Thread Previous • Date Previous • • Thread Next 
databill, as per http://download.lenovo.com/express/ddfm.html an update
is available for your BIOS (3.22). If you update to this following
https://help.ubuntu.com/community/BiosUpdate , does it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette
.

Thank you for your understanding.

** Description changed:

  i915_hotplug_work_func cause system crash
  
  NoteBook:X200
  lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 13.04
  Release:	13.04
  Codename:	raring
-  uname -a
+  uname -a
  Linux julien-X200 3.8.0-30-generic #44-Ubuntu SMP Thu Aug 22 20:54:42 UTC 2013 i686 i686 i686 GNU/Linux
  
  Mostly the notebook crashes when it restore to work from "suspend" status. Occacionally it also stop work when I use firefox for some time.
  When the problem happens, I can not use keyboard, mouse and I can not switch to terminal mode through ctl+alt+F1~F6.
  I can ssh to the notebook from other pc, but I can not kill Xorg or reboot the notebook. The proc xorg in "uninterruptable sleep" staus.
  It seems i915_hotplug_work_func has dead lock.
  
  Information from dmesg:
  [ 2520.564119] INFO: task kworker/u:3:225 blocked for more than 120 seconds.
  [ 2520.564129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 2520.564135] kworker/u:3     D 00000000     0   225      2 0x00000000
  [ 2520.564146]  f6f59e90 00000046 f68659b0 00000000 f6f59e48 c1010c58 c19c9100 dcb5da4d
  [ 2520.564165]  0000021d c19c9100 f7bc8100 f68659b0 00000002 a205ca2a 00000000 efbecfc0
  [ 2520.564181]  f6f59ed0 c1612d00 00000296 00000000 ed87c426 ef4cc000 c19c9100 00000001
  [ 2520.564198] Call Trace:
  [ 2520.564217]  [<c1010c58>] ? __switch_to+0x2a8/0x330
  [ 2520.564230]  [<c1612d00>] ? __schedule+0x360/0x780
  [ 2520.564242]  [<c103ce48>] ? default_spin_lock_flags+0x8/0x10
  [ 2520.564252]  [<c161427d>] ? _raw_spin_lock_irqsave+0x2d/0x40
  [ 2520.564269]  [<c16133c3>] schedule+0x23/0x60
  [ 2520.564278]  [<c161360d>] schedule_preempt_disabled+0xd/0x10
  [ 2520.564287]  [<c1612366>] __mutex_lock_slowpath+0xc6/0x120
  [ 2520.564295]  [<c1611ef4>] mutex_lock+0x24/0x40
  [ 2520.564344]  [<f8b03948>] i915_hotplug_work_func+0x28/0x90 [i915]
  [ 2520.564356]  [<c1064b5b>] ? cwq_dec_nr_in_flight+0x5b/0x90
  [ 2520.564366]  [<c1065785>] process_one_work+0x135/0x3e0
  [ 2520.564376]  [<c161b973>] ? common_interrupt+0x33/0x38
  [ 2520.564386]  [<c1066c99>] worker_thread+0x119/0x3c0
  [ 2520.564394]  [<c1066b80>] ? manage_workers+0x240/0x240
  [ 2520.564403]  [<c106b6d4>] kthread+0x94/0xa0
  [ 2520.564414]  [<c1070000>] ? __hrtimer_start_range_ns+0x1f0/0x460
  [ 2520.564424]  [<c161b3b7>] ret_from_kernel_thread+0x1b/0x28
  [ 2520.564432]  [<c106b640>] ? kthread_create_on_node+0xc0/0xc0
  [ 2520.564450] INFO: task Xorg:1283 blocked for more than 120 seconds.
  [ 2520.564455] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 2520.564459] Xorg            D 00000000     0  1283   1275 0x00400004
  [ 2520.564468]  ef4cdc90 00203086 f34035c0 00000000 000007ff f6f58000 c19c9100 dcb4371d
  [ 2520.564485]  0000021d c19c9100 f7bc8100 ed87c010 00000000 00000000 00000000 00000000
  [ 2520.564509]  00000000 00000000 00000000 00000000 f344f700 ef4cdcf0 ef4cdcfc c10867f9
  [ 2520.564525] Call Trace:
  [ 2520.564537]  [<c10867f9>] ? load_balance+0x99/0x670
  [ 2520.564546]  [<c16133c3>] schedule+0x23/0x60
  [ 2520.564555]  [<c1611b8d>] schedule_timeout+0x19d/0x240
  [ 2520.564565]  [<c1613241>] wait_for_common+0xa1/0x120
  [ 2520.564575]  [<c107c760>] ? try_to_wake_up+0x230/0x230
  [ 2520.564584]  [<c1613397>] wait_for_completion+0x17/0x20
  [ 2520.564594]  [<c1064ef7>] flush_workqueue+0xe7/0x330
  [ 2520.564604]  [<c1030000>] ? perf_ibs_start+0x10/0x120
  [ 2520.564613]  [<c1030101>] ? perf_ibs_start+0x111/0x120
  [ 2520.564658]  [<f8b299c7>] intel_crtc_page_flip+0x127/0x360 [i915]
  [ 2520.564671]  [<c114d953>] ? kmem_cache_alloc_trace+0x103/0x110
  [ 2520.564715]  [<f890c998>] drm_mode_page_flip_ioctl+0x238/0x310 [drm]
  [ 2520.564732]  [<c1611ee8>] ? mutex_lock+0x18/0x40
  [ 2520.564766]  [<f890c760>] ? drm_mode_gamma_get_ioctl+0xe0/0xe0 [drm]
  [ 2520.564794]  [<f88fceda>] drm_ioctl+0x42a/0x490 [drm]
  [ 2520.564830]  [<f890c760>] ? drm_mode_gamma_get_ioctl+0xe0/0xe0 [drm]
  [ 2520.564861]  [<f88fcab0>] ? drm_copy_field+0x80/0x80 [drm]
  [ 2520.564871]  [<c116fb90>] do_vfs_ioctl+0x80/0x580
  [ 2520.564900]  [<f88fd8f6>] ? drm_read+0xb6/0x160 [drm]
  [ 2520.564917]  [<c1050f33>] ? do_setitimer+0x123/0x210
  [ 2520.564927]  [<c1160505>] ? vfs_read+0xe5/0x160
  [ 2520.564955]  [<f88fd840>] ? drm_fasync+0x90/0x90 [drm]
  [ 2520.564964]  [<c11700fb>] sys_ioctl+0x6b/0x80
  [ 2520.564974]  [<c161b44d>] sysenter_do_call+0x12/0x28
  
  stack Information from proc kworker/u:3:225
  [<f8b03948>] i915_hotplug_work_func+0x28/0x90 [i915]
  [<c1065785>] process_one_work+0x135/0x3e0
  [<c1066c99>] worker_thread+0x119/0x3c0
  [<c106b6d4>] kthread+0x94/0xa0
  [<c161b3b7>] ret_from_kernel_thread+0x1b/0x28
  [<ffffffff>] 0xffffffff
  
  From the attached pictures,
  I915 has about 1300 intertups per seconds, and i915_hotplug_work_func take about 734 ms/s.
- --- 
+ ---
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: i386
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  julien     1823 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  julien     1823 F.... pulseaudio
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=0095ea5c-4c12-4d86-9f57-622f41bc3efe
  InstallationDate: Installed on 2013-09-20 (4 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
  MachineType: LENOVO 7458CZ8
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-30-generic root=UUID=575022e0-3ec3-4d45-8a2c-03e88601e2d3 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
  RelatedPackageVersions:
-  linux-restricted-modules-3.8.0-30-generic N/A
-  linux-backports-modules-3.8.0-30-generic  N/A
-  linux-firmware                            1.106
+  linux-restricted-modules-3.8.0-30-generic N/A
+  linux-backports-modules-3.8.0-30-generic  N/A
+  linux-firmware                            1.106
  RfKill:
-  0: phy0: Wireless LAN
-  	Soft blocked: no
-  	Hard blocked: no
+  0: phy0: Wireless LAN
+   Soft blocked: no
+   Hard blocked: no
  Tags:  raring
  Uname: Linux 3.8.0-30-generic i686
  UpgradeStatus: Upgraded to raring on 2013-09-20 (4 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 09/17/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET60WW (3.10 )
  dmi.board.name: 7458CZ8
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6DET60WW(3.10):bd09/17/2009:svnLENOVO:pn7458CZ8:pvrThinkPadX200:rvnLENOVO:rn7458CZ8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7458CZ8
  dmi.product.version: ThinkPad X200
  dmi.sys.vendor: LENOVO
- --- 
- ApportVersion: 2.9.2-0ubuntu8.3
- Architecture: i386
- AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  julien    11922 F.... pulseaudio
- DistroRelease: Ubuntu 13.04
- HibernationDevice: RESUME=UUID=0095ea5c-4c12-4d86-9f57-622f41bc3efe
- InstallationDate: Installed on 2013-09-20 (5 days ago)
- InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
- MachineType: LENOVO 7458CZ8
- MarkForUpload: True
- Package: linux (not installed)
- ProcFB: 0 inteldrmfb
- ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-30-generic root=UUID=575022e0-3ec3-4d45-8a2c-03e88601e2d3 ro quiet splash vt.handoff=7
- ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
- RelatedPackageVersions:
-  linux-restricted-modules-3.8.0-30-generic N/A
-  linux-backports-modules-3.8.0-30-generic  N/A
-  linux-firmware                            1.106
- RfKill:
-  0: phy0: Wireless LAN
-  	Soft blocked: no
-  	Hard blocked: yes
- Tags:  raring
- Uname: Linux 3.8.0-30-generic i686
- UpgradeStatus: Upgraded to raring on 2013-09-20 (4 days ago)
- UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
- dmi.bios.date: 09/17/2009
- dmi.bios.vendor: LENOVO
- dmi.bios.version: 6DET60WW (3.10 )
- dmi.board.name: 7458CZ8
- dmi.board.vendor: LENOVO
- dmi.board.version: Not Available
- dmi.chassis.asset.tag: No Asset Information
- dmi.chassis.type: 10
- dmi.chassis.vendor: LENOVO
- dmi.chassis.version: Not Available
- dmi.modalias: dmi:bvnLENOVO:bvr6DET60WW(3.10):bd09/17/2009:svnLENOVO:pn7458CZ8:pvrThinkPadX200:rvnLENOVO:rn7458CZ8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
- dmi.product.name: 7458CZ8
- dmi.product.version: ThinkPad X200
- dmi.sys.vendor: LENOVO

** Attachment removed: "AlsaInfo.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841273/+files/AlsaInfo.txt

** Attachment removed: "BootDmesg.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841274/+files/BootDmesg.txt

** Attachment removed: "CRDA.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841275/+files/CRDA.txt

** Attachment removed: "CurrentDmesg.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841276/+files/CurrentDmesg.txt

** Attachment removed: "HookError_cloud_archive.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841277/+files/HookError_cloud_archive.txt

** Attachment removed: "IwConfig.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841278/+files/IwConfig.txt

** Attachment removed: "Lsusb.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841280/+files/Lsusb.txt

** Attachment removed: "Lspci.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841279/+files/Lspci.txt

** Attachment removed: "ProcCpuinfo.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841281/+files/ProcCpuinfo.txt

** Attachment removed: "ProcEnviron.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841282/+files/ProcEnviron.txt

** Attachment removed: "ProcInterrupts.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841283/+files/ProcInterrupts.txt

** Attachment removed: "ProcModules.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841284/+files/ProcModules.txt

** Attachment removed: "PulseList.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841285/+files/PulseList.txt

** Attachment removed: "UdevDb.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841286/+files/UdevDb.txt

** Attachment removed: "UdevLog.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841287/+files/UdevLog.txt

** Attachment removed: "WifiSyslog.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1230041/+attachment/3841288/+files/WifiSyslog.txt

** Tags added: bios-outdated-3.22

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

-- 
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https://bugs.launchpad.net/bugs/1230041

Title:
  i915_hotplug_work_func cause system crash

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  i915_hotplug_work_func cause system crash

  NoteBook:X200
  lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 13.04
  Release:	13.04
  Codename:	raring
   uname -a
  Linux julien-X200 3.8.0-30-generic #44-Ubuntu SMP Thu Aug 22 20:54:42 UTC 2013 i686 i686 i686 GNU/Linux

  Mostly the notebook crashes when it restore to work from "suspend" status. Occacionally it also stop work when I use firefox for some time.
  When the problem happens, I can not use keyboard, mouse and I can not switch to terminal mode through ctl+alt+F1~F6.
  I can ssh to the notebook from other pc, but I can not kill Xorg or reboot the notebook. The proc xorg in "uninterruptable sleep" staus.
  It seems i915_hotplug_work_func has dead lock.

  Information from dmesg:
  [ 2520.564119] INFO: task kworker/u:3:225 blocked for more than 120 seconds.
  [ 2520.564129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 2520.564135] kworker/u:3     D 00000000     0   225      2 0x00000000
  [ 2520.564146]  f6f59e90 00000046 f68659b0 00000000 f6f59e48 c1010c58 c19c9100 dcb5da4d
  [ 2520.564165]  0000021d c19c9100 f7bc8100 f68659b0 00000002 a205ca2a 00000000 efbecfc0
  [ 2520.564181]  f6f59ed0 c1612d00 00000296 00000000 ed87c426 ef4cc000 c19c9100 00000001
  [ 2520.564198] Call Trace:
  [ 2520.564217]  [<c1010c58>] ? __switch_to+0x2a8/0x330
  [ 2520.564230]  [<c1612d00>] ? __schedule+0x360/0x780
  [ 2520.564242]  [<c103ce48>] ? default_spin_lock_flags+0x8/0x10
  [ 2520.564252]  [<c161427d>] ? _raw_spin_lock_irqsave+0x2d/0x40
  [ 2520.564269]  [<c16133c3>] schedule+0x23/0x60
  [ 2520.564278]  [<c161360d>] schedule_preempt_disabled+0xd/0x10
  [ 2520.564287]  [<c1612366>] __mutex_lock_slowpath+0xc6/0x120
  [ 2520.564295]  [<c1611ef4>] mutex_lock+0x24/0x40
  [ 2520.564344]  [<f8b03948>] i915_hotplug_work_func+0x28/0x90 [i915]
  [ 2520.564356]  [<c1064b5b>] ? cwq_dec_nr_in_flight+0x5b/0x90
  [ 2520.564366]  [<c1065785>] process_one_work+0x135/0x3e0
  [ 2520.564376]  [<c161b973>] ? common_interrupt+0x33/0x38
  [ 2520.564386]  [<c1066c99>] worker_thread+0x119/0x3c0
  [ 2520.564394]  [<c1066b80>] ? manage_workers+0x240/0x240
  [ 2520.564403]  [<c106b6d4>] kthread+0x94/0xa0
  [ 2520.564414]  [<c1070000>] ? __hrtimer_start_range_ns+0x1f0/0x460
  [ 2520.564424]  [<c161b3b7>] ret_from_kernel_thread+0x1b/0x28
  [ 2520.564432]  [<c106b640>] ? kthread_create_on_node+0xc0/0xc0
  [ 2520.564450] INFO: task Xorg:1283 blocked for more than 120 seconds.
  [ 2520.564455] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 2520.564459] Xorg            D 00000000     0  1283   1275 0x00400004
  [ 2520.564468]  ef4cdc90 00203086 f34035c0 00000000 000007ff f6f58000 c19c9100 dcb4371d
  [ 2520.564485]  0000021d c19c9100 f7bc8100 ed87c010 00000000 00000000 00000000 00000000
  [ 2520.564509]  00000000 00000000 00000000 00000000 f344f700 ef4cdcf0 ef4cdcfc c10867f9
  [ 2520.564525] Call Trace:
  [ 2520.564537]  [<c10867f9>] ? load_balance+0x99/0x670
  [ 2520.564546]  [<c16133c3>] schedule+0x23/0x60
  [ 2520.564555]  [<c1611b8d>] schedule_timeout+0x19d/0x240
  [ 2520.564565]  [<c1613241>] wait_for_common+0xa1/0x120
  [ 2520.564575]  [<c107c760>] ? try_to_wake_up+0x230/0x230
  [ 2520.564584]  [<c1613397>] wait_for_completion+0x17/0x20
  [ 2520.564594]  [<c1064ef7>] flush_workqueue+0xe7/0x330
  [ 2520.564604]  [<c1030000>] ? perf_ibs_start+0x10/0x120
  [ 2520.564613]  [<c1030101>] ? perf_ibs_start+0x111/0x120
  [ 2520.564658]  [<f8b299c7>] intel_crtc_page_flip+0x127/0x360 [i915]
  [ 2520.564671]  [<c114d953>] ? kmem_cache_alloc_trace+0x103/0x110
  [ 2520.564715]  [<f890c998>] drm_mode_page_flip_ioctl+0x238/0x310 [drm]
  [ 2520.564732]  [<c1611ee8>] ? mutex_lock+0x18/0x40
  [ 2520.564766]  [<f890c760>] ? drm_mode_gamma_get_ioctl+0xe0/0xe0 [drm]
  [ 2520.564794]  [<f88fceda>] drm_ioctl+0x42a/0x490 [drm]
  [ 2520.564830]  [<f890c760>] ? drm_mode_gamma_get_ioctl+0xe0/0xe0 [drm]
  [ 2520.564861]  [<f88fcab0>] ? drm_copy_field+0x80/0x80 [drm]
  [ 2520.564871]  [<c116fb90>] do_vfs_ioctl+0x80/0x580
  [ 2520.564900]  [<f88fd8f6>] ? drm_read+0xb6/0x160 [drm]
  [ 2520.564917]  [<c1050f33>] ? do_setitimer+0x123/0x210
  [ 2520.564927]  [<c1160505>] ? vfs_read+0xe5/0x160
  [ 2520.564955]  [<f88fd840>] ? drm_fasync+0x90/0x90 [drm]
  [ 2520.564964]  [<c11700fb>] sys_ioctl+0x6b/0x80
  [ 2520.564974]  [<c161b44d>] sysenter_do_call+0x12/0x28

  stack Information from proc kworker/u:3:225
  [<f8b03948>] i915_hotplug_work_func+0x28/0x90 [i915]
  [<c1065785>] process_one_work+0x135/0x3e0
  [<c1066c99>] worker_thread+0x119/0x3c0
  [<c106b6d4>] kthread+0x94/0xa0
  [<c161b3b7>] ret_from_kernel_thread+0x1b/0x28
  [<ffffffff>] 0xffffffff

  From the attached pictures,
  I915 has about 1300 intertups per seconds, and i915_hotplug_work_func take about 734 ms/s.
  ---
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  julien     1823 F.... pulseaudio
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=0095ea5c-4c12-4d86-9f57-622f41bc3efe
  InstallationDate: Installed on 2013-09-20 (4 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
  MachineType: LENOVO 7458CZ8
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-30-generic root=UUID=575022e0-3ec3-4d45-8a2c-03e88601e2d3 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-30-generic N/A
   linux-backports-modules-3.8.0-30-generic  N/A
   linux-firmware                            1.106
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  Tags:  raring
  Uname: Linux 3.8.0-30-generic i686
  UpgradeStatus: Upgraded to raring on 2013-09-20 (4 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 09/17/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET60WW (3.10 )
  dmi.board.name: 7458CZ8
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6DET60WW(3.10):bd09/17/2009:svnLENOVO:pn7458CZ8:pvrThinkPadX200:rvnLENOVO:rn7458CZ8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7458CZ8
  dmi.product.version: ThinkPad X200
  dmi.sys.vendor: LENOVO

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References

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