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[takashi torigoe <tt.hogehoge@xxxxxxxxx>]

I tested several kernel. And I tested Lucid install cd.
Results are below.
kernel 2.6.30 seems to be fixed to indirect rendering.

Lucid install cd.
	freeze
2.6.31.4
	freeze

2.6.31.1-855gmtest599-git522bb74_gomyhr1
	freeze

2.6.31.1-855gmtest599-git522bb74_gomyhr2
	freeze

2.6.30-freezetest8
	no freeze, but
	 - screen draw speed is very slow.
	 - Render selection (direct/indirect) by compiz fusion icon is disabled.
2.6.30-02063010-generic
	no freeze, but
	 - screen draw speed is very slow.
	 - Render selection (direct/indirect) by compiz fusion icon is disabled.

dmesg when the freeze occurs( kernel 2.6.31)
[  240.724047] INFO: task i915/1:299 blocked for more than 120 seconds.

[  240.724056] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.

[  240.724063] i915/1        D c08145c0     0   299      2 0x00000000

[  240.724074]  f642df04 00000046 f640326c c08145c0 f64034d8 c08145c0
99e9656a 00000015

[  240.724089]  c08145c0 c08145c0 f64034d8 c08145c0 99e9516f 00000015
c08145c0 e4a768c0

[  240.724103]  f6403240 f68cac14 f68cac18 ffffffff f642df30 c056f776
f703e480 f68cac1c

[  240.724117] Call Trace:

[  240.724135]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130

[  240.724143]  [<c056f690>] mutex_lock+0x20/0x40

[  240.724187]  [<f8275c0a>] i915_gem_retire_work_handler+0x2a/0x70
[i915]

[  240.724198]  [<c0157a7e>] run_workqueue+0x6e/0x140

[  240.724233]  [<f8275be0>] ? i915_gem_retire_work_handler+0x0/0x70
[i915]

[  240.724242]  [<c0157bd8>] worker_thread+0x88/0xe0

[  240.724251]  [<c015c280>] ? autoremove_wake_function+0x0/0x40

[  240.724259]  [<c0157b50>] ? worker_thread+0x0/0xe0

[  240.724266]  [<c015bf8c>] kthread+0x7c/0x90

[  240.724274]  [<c015bf10>] ? kthread+0x0/0x90

[  240.724283]  [<c0104007>] kernel_thread_helper+0x7/0x10

[  240.724314] INFO: task Xorg:1018 blocked for more than 120 seconds.

[  240.724319] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.

[  240.724325] Xorg          D c08145c0     0  1018    987 0x00400004

[  240.724334]  e332fe2c 00003086 df2a4000 c08145c0 e3269bb8 c08145c0
7cce808c 00000015

[  240.724348]  c08145c0 c08145c0 e3269bb8 c08145c0 00000000 00000015
c08145c0 e3c60700

[  240.724362]  e3269920 f68cac14 f68cac18 ffffffff e332fe58 c056f776
00000000 f68cac1c

[  240.724376] Call Trace:

[  240.724384]  [<c056f776>] __mutex_lock_slowpath+0xc6/0x130

[  240.724392]  [<c056f690>] mutex_lock+0x20/0x40

[  240.724425]  [<f8275943>] i915_gem_sw_finish_ioctl+0x43/0xa0 [i915]

[  240.724467]  [<f80dc6c0>] drm_ioctl+0x180/0x360 [drm]

[  240.724505]  [<f8275900>] ? i915_gem_sw_finish_ioctl+0x0/0xa0 [i915]

[  240.724516]  [<c0314fc4>] ? rb_erase+0xb4/0x120

[  240.724524]  [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40

[  240.724533]  [<c015f405>] ? __remove_hrtimer+0x25/0x70

[  240.724541]  [<c015fc63>] ? hrtimer_try_to_cancel+0x33/0x80

[  240.724550]  [<c014947e>] ? do_setitimer+0x23e/0x300

[  240.724568]  [<c01f4cf3>] vfs_ioctl+0x73/0x90

[  240.724575]  [<c01f4fc1>] do_vfs_ioctl+0x71/0x310

[  240.724583]  [<c014957b>] ? sys_setitimer+0x3b/0x90

[  240.724590]  [<c01f52bf>] sys_ioctl+0x5f/0x80

[  240.724598]  [<c010336c>] syscall_call+0x7/0xb

-- 
[i945] Intel 82945G/GZ Integrated Graphics Controller Freezes when compiz enabled
https://bugs.launchpad.net/bugs/475429
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