[Bug 451518] Re: [i945G] karmic: INFO: task i915/* blocked for more than 120 seconds.

[iuuuuan]

I have similar problems too. The computer is Dell Optiplex GX 260.  I
have disabled compiz, power saving options and updated BIOS to latest
version A09.

Intel graphics is :
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)
	Subsystem: Dell Device 0126
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
	Region 1: Memory at ff680000 (32-bit, non-prefetchable) [size=512K]
	Capabilities: [d0] Power Management version 1
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: i915
	Kernel modules: i915

Kernel panic section is :
[248401.076087] i915/0        D c08145c0     0   253      2 0x00000000
[248401.076097]  f6a2df04 00000046 eaa56000 c08145c0 f6ac4df8 c08145c0 3a030219 0000e1c7
[248401.076110]  c08145c0 c08145c0 f6ac4df8 c08145c0 00000000 0000e1c7 c08145c0 f68b4e00
[248401.076122]  f6ac4b60 f68cac14 f68cac18 ffffffff f6a2df30 c056f776 c0748e80 f68cac1c
[248401.076133] Call Trace:
[248401.076157]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
[248401.076163]  [<c056f690>] mutex_lock+0x20/0x40
[248401.076215]  [<f8257c0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
[248401.076228]  [<c0157a7e>] run_workqueue+0x6e/0x140
[248401.076244]  [<f8257be0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
[248401.076251]  [<c0157bd8>] worker_thread+0x88/0xe0
[248401.076258]  [<c015c280>] ? autoremove_wake_function+0x0/0x40
[248401.076264]  [<c0157b50>] ? worker_thread+0x0/0xe0
[248401.076270]  [<c015bf8c>] kthread+0x7c/0x90
[248401.076275]  [<c015bf10>] ? kthread+0x0/0x90
[248401.076283]  [<c0104007>] kernel_thread_helper+0x7/0x10

I have modified xorg.conf file - added AccelMethod "uxa", put only one
resultion in screen section, disabled all the modules in section
Modules.

Section "Device"
        Identifier      "Configured Video Device"
        Boardname       "Intel 845"
        Busid           "PCI:0:2:0"
        Driver          "intel"
        Screen  0
        Vendorname      "Intel"
        Option "AccelMethod" "uxa"
EndSection

Section "Monitor"
        Identifier      "Configured Monitor"
        Vendorname      "Samsung"
        Modelname       "Samsung SyncMaster 171S/175S/170S/CX175S-AZ/LX175S"
        Horizsync       30-81
        Vertrefresh     56-85
  modeline  "1280x1024 at 75" 135.0 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync
        Gamma   1.0
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "Configured Video Device"
        Monitor         "Configured Monitor"
        Defaultdepth    24
        SubSection "Display"
                Depth   24
                Virtual 1280    1024
                Modes           "1280x1024 at 75"  
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
  screen 0 "Default Screen" 0 0
EndSection
Section "Module"
#       Load            "glx"
#       Load            "GLcore"
#       Load            "dri"
#       Load            "v4l"
EndSection
Section "ServerFlags"
EndSection

Nothing helps :(

-- 
[i945G] karmic: INFO: task i915/* blocked for more than 120 seconds.
https://bugs.launchpad.net/bugs/451518
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