ubuntu-x-swat team mailing list archive

[Bryce Harrington <905109@xxxxxxxxxxxxxxxxxx>]

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

  I was trying to diagnose a bug with workspaces and moving around from
  desktop to desktop when the screen suddenly froze (no corruption, just
  stopped updating).  Could not vt switch, but could ssh in and file this
  bug report from the console.  Looking at dmesg appears to be a drm
  fault.
+ 
+ [ 1332.008002] INFO: rcu_sched detected stall on CPU 0 (t=15000 jiffies)
+ [ 1332.008003] Pid: 2574, comm: Xorg Not tainted 3.2.0-4-generic-pae #10-Ubuntu
+ [ 1332.008003] Call Trace:
+ [ 1332.008003]  [<c158f18c>] ? printk+0x2d/0x2f
+ [ 1332.008003]  [<c10c50e3>] check_cpu_stall.isra.36+0x93/0xe0
+ [ 1332.008003]  [<c10c515a>] __rcu_pending+0x2a/0x140
+ [ 1332.008003]  [<c10c550c>] rcu_check_callbacks+0x6c/0x1d0
+ [ 1332.008003]  [<c1069c0b>] update_process_times+0x3b/0x70
+ [ 1332.008003]  [<c108b03e>] tick_sched_timer+0x5e/0xc0
+ [ 1332.008003]  [<c107cf90>] ? __remove_hrtimer+0x40/0xa0
+ [ 1332.008003]  [<c107d6bf>] __run_hrtimer+0x6f/0x1b0
+ [ 1332.008003]  [<c108afe0>] ? tick_nohz_handler+0x100/0x100
+ [ 1332.008003]  [<c107e035>] hrtimer_interrupt+0xe5/0x260
+ [ 1332.008003]  [<c15ac3a4>] smp_apic_timer_interrupt+0x54/0x88
+ [ 1332.008003]  [<c15a50e9>] apic_timer_interrupt+0x31/0x38
+ [ 1332.008003]  [<c15a00e0>] ? get_ranges+0xcb/0x10e
+ [ 1332.008003]  [<f8a7d0f6>] ? i915_gem_get_aperture_ioctl+0x66/0xb0 [i915]
+ [ 1332.008003]  [<f8974f28>] drm_ioctl+0x378/0x480 [drm]
+ [ 1332.008003]  [<f8a7d090>] ? i915_gem_init_ioctl+0x80/0x80 [i915]
+ [ 1332.008003]  [<c117b278>] ? fsnotify+0x198/0x250
+ [ 1332.008003]  [<f8974bb0>] ? drm_copy_field+0x80/0x80 [drm]
+ [ 1332.008003]  [<c1154139>] do_vfs_ioctl+0x79/0x2d0
+ [ 1332.008003]  [<c1143830>] ? wait_on_retry_sync_kiocb+0x50/0x50
+ [ 1332.008003]  [<c11543ff>] sys_ioctl+0x6f/0x80
+ [ 1332.008003]  [<c15abb9f>] sysenter_do_call+0x12/0x28
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xserver-xorg-video-intel 2:2.15.901-1ubuntu4
  ProcVersionSignature: Ubuntu 3.2.0-4.10-generic-pae 3.2.0-rc5
  Uname: Linux 3.2.0-4-generic-pae i686
  ApportVersion: 1.90-0ubuntu1
  Architecture: i386
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,gnomecompat,regex,place,snap,vpswitch,mousepoll,grid,compiztoolbox,animation,move,session,resize,unitymtgrabhandles,workarounds,wall,expo,fade,ezoom,scale,unityshell]
  Date: Thu Dec 15 20:47:24 2011
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GraphicsCard:
-  Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
-    Subsystem: Fujitsu Limited. Device [10cf:1458]
-    Subsystem: Fujitsu Limited. Device [10cf:1458]
+  Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
+    Subsystem: Fujitsu Limited. Device [10cf:1458]
+    Subsystem: Fujitsu Limited. Device [10cf:1458]
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111121)
  MachineType: FUJITSU LifeBook T4410
  PccardctlIdent:
-  Socket 0:
-    no product info available
+  Socket 0:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    no card
+  Socket 0:
+    no card
  ProcEnviron:
-  PATH=(custom, user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  PATH=(custom, user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-generic-pae root=UUID=74b73169-6ac4-4698-bb5e-1f9b21250507 ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/30/2009
  dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
  dmi.bios.version: Version 1.05
  dmi.board.name: FJNB206
  dmi.board.vendor: FUJITSU
  dmi.chassis.type: 10
  dmi.chassis.vendor: A40R8CE708EA1001
  dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.05:bd09/30/2009:svnFUJITSU:pnLifeBookT4410:pvr:rvnFUJITSU:rnFJNB206:rvr:cvnA40R8CE708EA1001:ct10:cvr:
  dmi.product.name: LifeBook T4410
  dmi.sys.vendor: FUJITSU
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8
  version.libdrm2: libdrm2 2.4.27-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.10.4-1ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1

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https://bugs.launchpad.net/bugs/905109

Title:
  Kernel lockup/crash while using desktop switcher in unity

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