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实际上我发现这是英特尔视频驱动程序的问题：http://lkml.indiana.edu/hypermail/linux/kernel/0902.3/01703.html
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我正在使用 ubuntu 10.0.4 TLS，这是我的主板信息：http://www.made-in-china.com/showroom/geshem/product-detailbqfJOksvrXcn/China-Mainboard-ITX-WN45A-D.html
这些错误消息来自 /var/log/messages
Dec 17 09:46:53 my-desktop kernel: [ 1080.890084] i915 D 0000000000000000 0 595 2 0x00000000
Dec 17 09:46:53 my-desktop kernel: [ 1080.890096] ffff880030257d40 0000000000000046 0000000000015bc0 0000000000015bc0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890107] ffff880030b53178 ffff880030257fd8 0000000000015bc0 ffff880030b52dc0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890117] 0000000000015bc0 ffff880030257fd8 0000000000015bc0 ffff880030b53178
Dec 17 09:46:53 my-desktop kernel: [ 1080.890127] Call Trace:
Dec 17 09:46:53 my-desktop kernel: [ 1080.890148] [<ffffffff81542907>] __mutex_lock_slowpath+0xf7/0x180
Dec 17 09:46:53 my-desktop kernel: [ 1080.890161] [<ffffffff810578b0>] ? finish_task_switch+0x50/0xe0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890169] [<ffffffff815427eb>] mutex_lock+0x2b/0x50
Dec 17 09:46:53 my-desktop kernel: [ 1080.890207] [<ffffffffa0110add>] i915_gem_retire_work_handler+0x3d/0xa0 [i915]
Dec 17 09:46:53 my-desktop kernel: [ 1080.890231] [<ffffffffa0110aa0>] ? i915_gem_retire_work_handler+0x0/0xa0 [i915]
Dec 17 09:46:53 my-desktop kernel: [ 1080.890243] [<ffffffff8107f9a7>] run_workqueue+0xc7/0x1a0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890252] [<ffffffff8107fb23>] worker_thread+0xa3/0x110
Dec 17 09:46:53 my-desktop kernel: [ 1080.890261] [<ffffffff81084570>] ? autoremove_wake_function+0x0/0x40
Dec 17 09:46:53 my-desktop kernel: [ 1080.890270] [<ffffffff8107fa80>] ? worker_thread+0x0/0x110
Dec 17 09:46:53 my-desktop kernel: [ 1080.890278] [<ffffffff810841f6>] kthread+0x96/0xa0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890287] [<ffffffff810131ea>] child_rip+0xa/0x20
Dec 17 09:46:53 my-desktop kernel: [ 1080.890296] [<ffffffff81084160>] ? kthread+0x0/0xa0
Dec 17 09:46:53 my-desktop kernel: [ 1080.890303] [<ffffffff810131e0>] ? child_rip+0x0/0x20
Dec 17 10:08:53 my-desktop kernel: [ 2400.890080] i915 D 0000000000000000 0 595 2 0x00000000
Dec 17 10:08:53 my-desktop kernel: [ 2400.890092] ffff880030257d40 0000000000000046 0000000000015bc0 0000000000015bc0
Dec 17 10:08:53 my-desktop kernel: [ 2400.890103] ffff880030b53178 ffff880030257fd8 0000000000015bc0 ffff880030b52dc0
Dec 17 10:08:53 my-desktop kernel: [ 2400.890113] 0000000000015bc0 ffff880030257fd8 0000000000015bc0 ffff880030b53178
Dec 17 10:08:53 my-desktop kernel: [ 2400.890122] Call Trace:
Dec 17 10:08:53 my-desktop kernel: [ 2400.890143] [<ffffffff81542907>] __mutex_lock_slowpath+0xf7/0x180
Dec 17 10:08:53 my-desktop kernel: [ 2400.890156] [<ffffffff810578b0>] ? finish_task_switch+0x50/0xe0
Dec 17 10:08:53 my-desktop kernel: [ 2400.890164] [<ffffffff815427eb>] mutex_lock+0x2b/0x50
Dec 17 10:08:53 my-desktop kernel: [ 2400.890202] [<ffffffffa0110add>] i915_gem_retire_work_handler+0x3d/0xa0 [i915]
Dec 17 10:08:53 my-desktop kernel: [ 2400.890226] [<ffffffffa0110aa0>] ? i915_gem_retire_work_handler+0x0/0xa0 [i915]
Dec 17 10:08:53 my-desktop kernel: [ 2400.890237] [<ffffffff8107f9a7>] run_workqueue+0xc7/0x1a0
Dec 17 10:08:53 my-desktop kernel: [ 2400.890246] [<ffffffff8107fb23>] worker_thread+0xa3/0x110
Dec 17 10:08:53 my-desktop kernel: [ 2400.890256] [<ffffffff81084570>] ? autoremove_wake_function+0x0/0x40
Dec 17 10:08:53 my-desktop kernel: [ 2400.890265] [<ffffffff8107fa80>] ? worker_thread+0x0/0x110
Dec 17 10:08:53 my-desktop kernel: [ 2400.890273] [<ffffffff810841f6>] kthread+0x96/0xa0
Dec 17 10:08:53 my-desktop kernel: [ 2400.890283] [<ffffffff810131ea>] child_rip+0xa/0x20
Dec 17 10:08:53 my-desktop kernel: [ 2400.890291] [<ffffffff81084160>] ? kthread+0x0/0xa0
以下内容来自 /var/log/kern.log
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890068] INFO: task i915:595 blocked for more than 120 seconds.
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890076] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890084] i915 D 0000000000000000 0 595 2 0x00000000
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890095] ffff880030257d40 0000000000000046 0000000000015bc0 0000000000015bc0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890106] ffff880030b53178 ffff880030257fd8 0000000000015bc0 ffff880030b52dc0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890116] 0000000000015bc0 ffff880030257fd8 0000000000015bc0 ffff880030b53178
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890126] Call Trace:
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890146] [<ffffffff81542907>] __mutex_lock_slowpath+0xf7/0x180
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890159] [<ffffffff810578b0>] ? finish_task_switch+0x50/0xe0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890168] [<ffffffff815427eb>] mutex_lock+0x2b/0x50
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890206] [<ffffffffa0110add>] i915_gem_retire_work_handler+0x3d/0xa0 [i915]
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890230] [<ffffffffa0110aa0>] ? i915_gem_retire_work_handler+0x0/0xa0 [i915]
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890241] [<ffffffff8107f9a7>] run_workqueue+0xc7/0x1a0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890250] [<ffffffff8107fb23>] worker_thread+0xa3/0x110
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890259] [<ffffffff81084570>] ? autoremove_wake_function+0x0/0x40
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890269] [<ffffffff8107fa80>] ? worker_thread+0x0/0x110
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890276] [<ffffffff810841f6>] kthread+0x96/0xa0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890286] [<ffffffff810131ea>] child_rip+0xa/0x20
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890294] [<ffffffff81084160>] ? kthread+0x0/0xa0
Dec 17 09:44:53 pujia-desktop kernel: [ 960.890302] [<ffffffff810131e0>] ? child_rip+0x0/0x20
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890068] INFO: task i915:595 blocked for more than 120 seconds.
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890077] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890084] i915 D 0000000000000000 0 595 2 0x00000000
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890096] ffff880030257d40 0000000000000046 0000000000015bc0 0000000000015bc0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890107] ffff880030b53178 ffff880030257fd8 0000000000015bc0 ffff880030b52dc0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890117] 0000000000015bc0 ffff880030257fd8 0000000000015bc0 ffff880030b53178
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890127] Call Trace:
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890148] [<ffffffff81542907>] __mutex_lock_slowpath+0xf7/0x180
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890161] [<ffffffff810578b0>] ? finish_task_switch+0x50/0xe0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890169] [<ffffffff815427eb>] mutex_lock+0x2b/0x50
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890207] [<ffffffffa0110add>] i915_gem_retire_work_handler+0x3d/0xa0 [i915]
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890231] [<ffffffffa0110aa0>] ? i915_gem_retire_work_handler+0x0/0xa0 [i915]
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890243] [<ffffffff8107f9a7>] run_workqueue+0xc7/0x1a0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890252] [<ffffffff8107fb23>] worker_thread+0xa3/0x110
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890261] [<ffffffff81084570>] ? autoremove_wake_function+0x0/0x40
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890270] [<ffffffff8107fa80>] ? worker_thread+0x0/0x110
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890278] [<ffffffff810841f6>] kthread+0x96/0xa0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890287] [<ffffffff810131ea>] child_rip+0xa/0x20
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890296] [<ffffffff81084160>] ? kthread+0x0/0xa0
Dec 17 09:46:53 pujia-desktop kernel: [ 1080.890303] [<ffffffff810131e0>] ? child_rip+0x0/0x20