Ubuntu冻结只有鼠标光标可移动,键盘解决方案不起作用

Ctrl + Alt + F1Alt + PrtScreen + K及其变种等解决方案都不起作用,似乎我的键盘被冻结了。 任何人都可以发现导致系统失败的原因吗? 我在这里附上我的syslog

 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078396] INFO: task kworker/5:3:3442 blocked for more than 120 seconds. May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078399] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078399] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078400] kworker/5:3 D 0000000000000000 0 3442 2 0x00000000 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078425] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078427] ffff8803cc9ebb58 0000000000000046 ffff880340ca3b00 ffff8800b6de8ec0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078428] 0000000100367e4c ffff8803cc9ec000 0000000000000000 7fffffffffffffff May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078430] ffff88040a340000 ffff88040a341f28 ffff8803cc9ebb78 ffffffff817b8b57 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078431] Call Trace: May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078435] [] schedule+0x37/0x80 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078437] [] schedule_timeout+0x201/0x2a0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078439] [] ? read_tsc+0x9/0x10 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078441] [] ? ktime_get+0x3e/0xa0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078443] [] io_schedule_timeout+0xa6/0x120 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078451] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078453] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078455] [] ? set_next_entity+0xa6/0x4c0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078457] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078458] [] ? __switch_to_xtra+0x142/0x180 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078468] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078470] [] process_one_work+0x14e/0x3d0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078472] [] worker_thread+0x11a/0x470 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078474] [] ? rescuer_thread+0x310/0x310 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078475] [] kthread+0xd2/0xf0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078476] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078478] [] ret_from_fork+0x3f/0x70 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078479] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078482] INFO: task kworker/5:1:5369 blocked for more than 120 seconds. May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078483] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078484] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078484] kworker/5:1 D 0000000000000000 0 5369 2 0x00000000 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078494] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078495] ffff8803cafa3b58 0000000000000046 ffff88040a271d80 ffff8803e4e0e740 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078496] 000000010036629c ffff8803cafa4000 0000000000000000 7fffffffffffffff May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078497] ffff88040a340000 ffff88040a341f28 ffff8803cafa3b78 ffffffff817b8b57 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078499] Call Trace: May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078500] [] schedule+0x37/0x80 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078501] [] schedule_timeout+0x201/0x2a0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078503] [] ? read_tsc+0x9/0x10 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078505] [] ? ktime_get+0x3e/0xa0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078506] [] ? read_tsc+0x9/0x10 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078507] [] ? ktime_get+0x3e/0xa0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078509] [] io_schedule_timeout+0xa6/0x120 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078516] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078517] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078518] [] ? set_next_entity+0xa6/0x4c0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078520] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078521] [] ? __switch_to_xtra+0x142/0x180 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078530] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078532] [] process_one_work+0x14e/0x3d0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078533] [] worker_thread+0x11a/0x470 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078535] [] ? rescuer_thread+0x310/0x310 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078536] [] kthread+0xd2/0xf0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078538] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078539] [] ret_from_fork+0x3f/0x70 May 15 14:05:46 mi-OptiPlex-7040 kernel: [14737.078540] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890922] INFO: task kworker/5:3:3442 blocked for more than 120 seconds. May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890926] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890927] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890929] kworker/5:3 D 0000000000000000 0 3442 2 0x00000000 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890954] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890956] ffff8803cc9ebb58 0000000000000046 ffff880340ca3b00 ffff8800b6de8ec0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890958] 0000000100367e4c ffff8803cc9ec000 0000000000000000 7fffffffffffffff May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890960] ffff88040a340000 ffff88040a341f28 ffff8803cc9ebb78 ffffffff817b8b57 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890962] Call Trace: May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890968] [] schedule+0x37/0x80 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890970] [] schedule_timeout+0x201/0x2a0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890974] [] ? read_tsc+0x9/0x10 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890977] [] ? ktime_get+0x3e/0xa0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890980] [] io_schedule_timeout+0xa6/0x120 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890992] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890995] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.890997] [] ? set_next_entity+0xa6/0x4c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891000] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891003] [] ? __switch_to_xtra+0x142/0x180 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891018] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891021] [] process_one_work+0x14e/0x3d0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891024] [] worker_thread+0x11a/0x470 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891026] [] ? rescuer_thread+0x310/0x310 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891029] [] kthread+0xd2/0xf0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891031] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891033] [] ret_from_fork+0x3f/0x70 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891035] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891039] INFO: task kworker/5:1:5369 blocked for more than 120 seconds. May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891040] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891041] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891042] kworker/5:1 D 0000000000000000 0 5369 2 0x00000000 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891058] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891059] ffff8803cafa3b58 0000000000000046 ffff88040a271d80 ffff8803e4e0e740 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891061] 000000010036629c ffff8803cafa4000 0000000000000000 7fffffffffffffff May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891063] ffff88040a340000 ffff88040a341f28 ffff8803cafa3b78 ffffffff817b8b57 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891065] Call Trace: May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891068] [] schedule+0x37/0x80 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891069] [] schedule_timeout+0x201/0x2a0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891072] [] ? read_tsc+0x9/0x10 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891074] [] ? ktime_get+0x3e/0xa0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891076] [] ? read_tsc+0x9/0x10 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891079] [] ? ktime_get+0x3e/0xa0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891081] [] io_schedule_timeout+0xa6/0x120 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891092] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891094] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891096] [] ? set_next_entity+0xa6/0x4c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891098] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891101] [] ? __switch_to_xtra+0x142/0x180 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891114] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891117] [] process_one_work+0x14e/0x3d0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891119] [] worker_thread+0x11a/0x470 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891122] [] ? rescuer_thread+0x310/0x310 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891124] [] kthread+0xd2/0xf0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891126] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891127] [] ret_from_fork+0x3f/0x70 May 15 14:07:46 mi-OptiPlex-7040 kernel: [14856.891129] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703351] INFO: task kworker/5:3:3442 blocked for more than 120 seconds. May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703354] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703355] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703356] kworker/5:3 D 0000000000000000 0 3442 2 0x00000000 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703373] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703374] ffff8803cc9ebb58 0000000000000046 ffff880340ca3b00 ffff8800b6de8ec0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703376] 0000000100367e4c ffff8803cc9ec000 0000000000000000 7fffffffffffffff May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703377] ffff88040a340000 ffff88040a341f28 ffff8803cc9ebb78 ffffffff817b8b57 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703378] Call Trace: May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703382] [] schedule+0x37/0x80 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703384] [] schedule_timeout+0x201/0x2a0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703386] [] ? read_tsc+0x9/0x10 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703388] [] ? ktime_get+0x3e/0xa0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703390] [] io_schedule_timeout+0xa6/0x120 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703398] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703400] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703401] [] ? set_next_entity+0xa6/0x4c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703403] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703405] [] ? __switch_to_xtra+0x142/0x180 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703415] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703417] [] process_one_work+0x14e/0x3d0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703419] [] worker_thread+0x11a/0x470 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703420] [] ? rescuer_thread+0x310/0x310 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703422] [] kthread+0xd2/0xf0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703423] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703424] [] ret_from_fork+0x3f/0x70 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703426] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703428] INFO: task kworker/5:1:5369 blocked for more than 120 seconds. May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703429] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703430] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703430] kworker/5:1 D 0000000000000000 0 5369 2 0x00000000 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703440] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703441] ffff8803cafa3b58 0000000000000046 ffff88040a271d80 ffff8803e4e0e740 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703442] 000000010036629c ffff8803cafa4000 0000000000000000 7fffffffffffffff May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703444] ffff88040a340000 ffff88040a341f28 ffff8803cafa3b78 ffffffff817b8b57 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703445] Call Trace: May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703447] [] schedule+0x37/0x80 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703448] [] schedule_timeout+0x201/0x2a0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703449] [] ? read_tsc+0x9/0x10 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703451] [] ? ktime_get+0x3e/0xa0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703452] [] ? read_tsc+0x9/0x10 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703453] [] ? ktime_get+0x3e/0xa0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703455] [] io_schedule_timeout+0xa6/0x120 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703462] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703463] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703464] [] ? set_next_entity+0xa6/0x4c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703466] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703467] [] ? __switch_to_xtra+0x142/0x180 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703476] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703478] [] process_one_work+0x14e/0x3d0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703479] [] worker_thread+0x11a/0x470 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703481] [] ? rescuer_thread+0x310/0x310 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703482] [] kthread+0xd2/0xf0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703483] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703485] [] ret_from_fork+0x3f/0x70 May 15 14:09:46 mi-OptiPlex-7040 kernel: [14976.703486] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:10:29 mi-OptiPlex-7040 kernel: [15020.529410] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:38 mi-OptiPlex-7040 kernel: [15028.756536] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:42 mi-OptiPlex-7040 kernel: [15032.654447] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:43 mi-OptiPlex-7040 kernel: [15033.932448] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:43 mi-OptiPlex-7040 kernel: [15034.140122] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:43 mi-OptiPlex-7040 kernel: [15034.315834] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:43 mi-OptiPlex-7040 kernel: [15034.491560] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:44 mi-OptiPlex-7040 kernel: [15034.683267] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:44 mi-OptiPlex-7040 kernel: [15034.954846] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:50 mi-OptiPlex-7040 kernel: [15040.705846] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:50 mi-OptiPlex-7040 kernel: [15041.440683] sysrq: SysRq : This sysrq operation is disabled. May 15 14:10:52 mi-OptiPlex-7040 kernel: [15042.622832] sysrq: SysRq : This sysrq operation is disabled. May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515797] INFO: task kworker/5:3:3442 blocked for more than 120 seconds. May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515800] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515800] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515801] kworker/5:3 D 0000000000000000 0 3442 2 0x00000000 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515819] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515821] ffff8803cc9ebb58 0000000000000046 ffff880340ca3b00 ffff8800b6de8ec0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515822] 0000000100367e4c ffff8803cc9ec000 0000000000000000 7fffffffffffffff May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515824] ffff88040a340000 ffff88040a341f28 ffff8803cc9ebb78 ffffffff817b8b57 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515825] Call Trace: May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515829] [] schedule+0x37/0x80 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515831] [] schedule_timeout+0x201/0x2a0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515834] [] ? read_tsc+0x9/0x10 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515836] [] ? ktime_get+0x3e/0xa0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515838] [] io_schedule_timeout+0xa6/0x120 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515846] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515848] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515849] [] ? set_next_entity+0xa6/0x4c0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515851] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515853] [] ? __switch_to_xtra+0x142/0x180 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515863] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515866] [] process_one_work+0x14e/0x3d0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515867] [] worker_thread+0x11a/0x470 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515869] [] ? rescuer_thread+0x310/0x310 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515871] [] kthread+0xd2/0xf0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515872] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515874] [] ret_from_fork+0x3f/0x70 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515876] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515879] INFO: task kworker/5:1:5369 blocked for more than 120 seconds. May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515881] Tainted: GW 4.2.0-27-generic #32~14.04.1-Ubuntu May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515882] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515883] kworker/5:1 D 0000000000000000 0 5369 2 0x00000000 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515893] Workqueue: events intel_mmio_flip_work_func [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515894] ffff8803cafa3b58 0000000000000046 ffff88040a271d80 ffff8803e4e0e740 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515895] 000000010036629c ffff8803cafa4000 0000000000000000 7fffffffffffffff May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515897] ffff88040a340000 ffff88040a341f28 ffff8803cafa3b78 ffffffff817b8b57 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515898] Call Trace: May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515900] [] schedule+0x37/0x80 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515901] [] schedule_timeout+0x201/0x2a0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515903] [] ? read_tsc+0x9/0x10 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515904] [] ? ktime_get+0x3e/0xa0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515906] [] ? read_tsc+0x9/0x10 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515907] [] ? ktime_get+0x3e/0xa0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515909] [] io_schedule_timeout+0xa6/0x120 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515916] [] __i915_wait_request+0x3f1/0x530 [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515917] [] ? prepare_to_wait_event+0xf0/0xf0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515918] [] ? set_next_entity+0xa6/0x4c0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515919] [] ? queued_spin_lock_slowpath+0xb/0xf May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515921] [] ? __switch_to_xtra+0x142/0x180 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515929] [] intel_mmio_flip_work_func+0x40/0x3a0 [i915] May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515931] [] process_one_work+0x14e/0x3d0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515933] [] worker_thread+0x11a/0x470 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515934] [] ? rescuer_thread+0x310/0x310 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515936] [] kthread+0xd2/0xf0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515937] [] ? kthread_create_on_node+0x1c0/0x1c0 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515938] [] ret_from_fork+0x3f/0x70 May 15 14:11:46 mi-OptiPlex-7040 kernel: [15096.515939] [] ? kthread_create_on_node+0x1c0/0x1c0 

机器信息

戴尔OptiPlex 7040

Ubuntu 14.04

内核版本4.2.0-27-通用