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[bugbot <574336@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  This is fresh install of Ubuntu 10.04 (64 bit) on Intel Core 5 on Intel board. The installation has not been changed, the X server is running without the xorg.conf file.
  After some time suddenly the Xorg server hangs, mouse and keyboard (USB) completely hangs too. But the system is available using SSH. The kernel logs:
  
  [141732.801427] INFO: task i915:858 blocked for more than 120 seconds.
  [141732.801432] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [141732.801436] i915          D 0000000000000000     0   858      2 0x00000000
  [141732.801443]  ffff8800cad5fd20 0000000000000046 0000000000015bc0 0000000000015bc0
  [141732.801450]  ffff8801004c03c0 ffff8800cad5ffd8 0000000000015bc0 ffff8801004c0000
  [141732.801456]  0000000000015bc0 ffff8800cad5ffd8 0000000000015bc0 ffff8801004c03c0
  [141732.801462] Call Trace:
  [141732.801476]  [<ffffffff8153f867>] __mutex_lock_slowpath+0xe7/0x170
  [141732.801481]  [<ffffffff8153f75b>] mutex_lock+0x2b/0x50
  [141732.801507]  [<ffffffffa01c6550>] intel_idle_update+0x60/0x1d0 [i915]
  [141732.801526]  [<ffffffffa01c64f0>] ? intel_idle_update+0x0/0x1d0 [i915]
  [141732.801535]  [<ffffffff81080777>] run_workqueue+0xc7/0x1a0
  [141732.801541]  [<ffffffff810808f3>] worker_thread+0xa3/0x110
  [141732.801547]  [<ffffffff81085320>] ? autoremove_wake_function+0x0/0x40
  [141732.801553]  [<ffffffff81080850>] ? worker_thread+0x0/0x110
  [141732.801557]  [<ffffffff81084fa6>] kthread+0x96/0xa0
  [141732.801564]  [<ffffffff810141ea>] child_rip+0xa/0x20
  [141732.801569]  [<ffffffff81084f10>] ? kthread+0x0/0xa0
  [141732.801573]  [<ffffffff810141e0>] ? child_rip+0x0/0x20
  [141732.801588] INFO: task Xorg:1330 blocked for more than 120 seconds.
  [141732.801591] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [141732.801594] Xorg          D 00000000ffffffff     0  1330   1288 0x00400004
  [141732.801600]  ffff8800c753fca8 0000000000000086 0000000000015bc0 0000000000015bc0
  [141732.801606]  ffff8800c77a4890 ffff8800c753ffd8 0000000000015bc0 ffff8800c77a44d0
  [141732.801612]  0000000000015bc0 ffff8800c753ffd8 0000000000015bc0 ffff8800c77a4890
  [141732.801617] Call Trace:
  [141732.801623]  [<ffffffff8153f867>] __mutex_lock_slowpath+0xe7/0x170
  [141732.801629]  [<ffffffff8153f75b>] mutex_lock+0x2b/0x50
  [141732.801644]  [<ffffffffa01b429b>] i915_gem_throttle_ioctl+0x3b/0x90 [i915]
  [141732.801659]  [<ffffffffa015ee2a>] drm_ioctl+0x27a/0x480 [drm]
  [141732.801693]  [<ffffffffa01b4260>] ? i915_gem_throttle_ioctl+0x0/0x90 [i915]
  [141732.801702]  [<ffffffff8101b4a0>] ? __switch_to_xtra+0x160/0x1e0
  [141732.801710]  [<ffffffff810397a9>] ? default_spin_lock_flags+0x9/0x10
  [141732.801716]  [<ffffffff81540bbf>] ? _spin_lock_irqsave+0x2f/0x40
  [141732.801724]  [<ffffffff81152a92>] vfs_ioctl+0x22/0xa0
  [141732.801733]  [<ffffffff81152d41>] do_vfs_ioctl+0x81/0x380
  [141732.801742]  [<ffffffff811530c1>] sys_ioctl+0x81/0xa0
  [141732.801754]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
  
  [141613.104273] INFO: task i915:858 blocked for more than 120 seconds.
  [141613.104278] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [141613.104282] i915          D 0000000000000000     0   858      2 0x00000000
  [141613.104289]  ffff8800cad5fd20 0000000000000046 0000000000015bc0 0000000000015bc0
  [141613.104296]  ffff8801004c03c0 ffff8800cad5ffd8 0000000000015bc0 ffff8801004c0000
  [141613.104302]  0000000000015bc0 ffff8800cad5ffd8 0000000000015bc0 ffff8801004c03c0
  [141613.104308] Call Trace:
  [141613.104321]  [<ffffffff8153f867>] __mutex_lock_slowpath+0xe7/0x170
  [141613.104327]  [<ffffffff8153f75b>] mutex_lock+0x2b/0x50
  [141613.104352]  [<ffffffffa01c6550>] intel_idle_update+0x60/0x1d0 [i915]
  [141613.104371]  [<ffffffffa01c64f0>] ? intel_idle_update+0x0/0x1d0 [i915]
  [141613.104380]  [<ffffffff81080777>] run_workqueue+0xc7/0x1a0
  [141613.104386]  [<ffffffff810808f3>] worker_thread+0xa3/0x110
  [141613.104392]  [<ffffffff81085320>] ? autoremove_wake_function+0x0/0x40
  [141613.104398]  [<ffffffff81080850>] ? worker_thread+0x0/0x110
  [141613.104402]  [<ffffffff81084fa6>] kthread+0x96/0xa0
  [141613.104409]  [<ffffffff810141ea>] child_rip+0xa/0x20
  [141613.104414]  [<ffffffff81084f10>] ? kthread+0x0/0xa0
  [141613.104418]  [<ffffffff810141e0>] ? child_rip+0x0/0x20
  [141613.104433] INFO: task Xorg:1330 blocked for more than 120 seconds.
  [141613.104436] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [141613.104439] Xorg          D 00000000ffffffff     0  1330   1288 0x00400004
  [141613.104445]  ffff8800c753fca8 0000000000000086 0000000000015bc0 0000000000015bc0
  [141613.104451]  ffff8800c77a4890 ffff8800c753ffd8 0000000000015bc0 ffff8800c77a44d0
  [141613.104457]  0000000000015bc0 ffff8800c753ffd8 0000000000015bc0 ffff8800c77a4890
  
  Driver is:
  xserver-xorg-video-intel:
    Installed: 2:2.9.1-3ubuntu5
    Candidate: 2:2.9.1-3ubuntu5
  --- 
  Architecture: amd64
  DistroRelease: Ubuntu 10.04
  DkmsStatus: Error: [Errno 2] No such file or directory
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
  Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu5
  PackageArchitecture: amd64
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=7a8c69cb-81b3-4ea6-87c5-5803c8d664e9 ro quiet splash
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
  Tags: lucid lucid
  Uname: Linux 2.6.32-21-generic x86_64
  UserGroups:
   
  dmi.bios.date: 12/01/2009
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: TCIBX10H.86A.0028.2009.1201.1520
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: DH55HC
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAE70933-500
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorp.:bvrTCIBX10H.86A.0028.2009.1201.1520:bd12/01/2009:svn:pn:pvr:rvnIntelCorporation:rnDH55HC:rvrAAE70933-500:cvn:ct3:cvr:
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       x86_64
   kernel:             2.6.32-21-generic
+ 
+ 
+ [lspci]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 12)
+     	Subsystem: Intel Corporation Device [8086:0037]

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https://bugs.launchpad.net/bugs/574336

Title:
  Xorg hangs on Intel Core i5 (Intel HD4500)