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Oct  2 23:03:43 magi-01 kernel: [ 1059.525884] irq 18: nobody cared (try booting with the "irqpoll" option)
Oct  2 23:03:43 magi-01 kernel: [ 1059.525891] Pid: 104, comm: irq/18-ohci_hcd Tainted: G         C   3.5.0-16-lowlatency #15-Ubuntu
Oct  2 23:03:43 magi-01 kernel: [ 1059.525894] Call Trace:
Oct  2 23:03:43 magi-01 kernel: [ 1059.525905]  [<ffffffff810e5c0d>] __report_bad_irq+0x3d/0xe0
Oct  2 23:03:43 magi-01 kernel: [ 1059.525910]  [<ffffffff810e5f14>] note_interrupt+0x1b4/0x200
Oct  2 23:03:43 magi-01 kernel: [ 1059.525914]  [<ffffffff810e3fc0>] ? irq_thread_fn+0x50/0x50
Oct  2 23:03:43 magi-01 kernel: [ 1059.525917]  [<ffffffff810e445d>] irq_thread+0x15d/0x1c0
Oct  2 23:03:43 magi-01 kernel: [ 1059.525921]  [<ffffffff810e3eb0>] ? irq_finalize_oneshot+0xf0/0xf0
Oct  2 23:03:43 magi-01 kernel: [ 1059.525924]  [<ffffffff810e4300>] ? irq_set_irq_wake+0x120/0x120
Oct  2 23:03:43 magi-01 kernel: [ 1059.525928]  [<ffffffff81079603>] kthread+0x93/0xa0
Oct  2 23:03:43 magi-01 kernel: [ 1059.525932]  [<ffffffff81698ae4>] kernel_thread_helper+0x4/0x10
Oct  2 23:03:43 magi-01 kernel: [ 1059.525935]  [<ffffffff81079570>] ? kthread_freezable_should_stop+0x70/0x70
Oct  2 23:03:43 magi-01 kernel: [ 1059.525938]  [<ffffffff81698ae0>] ? gs_change+0x13/0x13
Oct  2 23:03:43 magi-01 kernel: [ 1059.525939] handlers:
Oct  2 23:03:43 magi-01 kernel: [ 1059.525943] [<ffffffff810e3900>] irq_default_primary_handler threaded [<ffffffff814c0240>] usb_hcd_irq
Oct  2 23:03:43 magi-01 kernel: [ 1059.525949] [<ffffffff810e3900>] irq_default_primary_handler threaded [<ffffffff814c0240>] usb_hcd_irq
Oct  2 23:03:43 magi-01 kernel: [ 1059.525954] [<ffffffff810e3900>] irq_default_primary_handler threaded [<ffffffff814c0240>] usb_hcd_irq
Oct  2 23:03:43 magi-01 kernel: [ 1059.525959] [<ffffffff810e3900>] irq_default_primary_handler threaded [<ffffffffa01473a0>] radeon_driver_irq_handler_kms [radeon]
Oct  2 23:03:43 magi-01 kernel: [ 1059.526002] Disabling IRQ #18
Oct  2 23:03:53 magi-01 kernel: [ 1069.765344] radeon 0000:01:05.0: GPU lockup CP stall for more than 10000msec
Oct  2 23:03:53 magi-01 kernel: [ 1069.765356] radeon 0000:01:05.0: GPU lockup (waiting for 0x0000000000018ebb)
Oct  2 23:03:53 magi-01 kernel: [ 1069.765364] radeon 0000:01:05.0: failed to get a new IB (-35)
Oct  2 23:03:53 magi-01 kernel: [ 1069.765370] [drm:radeon_cs_ib_chunk] *ERROR* Failed to get ib !
Oct  2 23:03:53 magi-01 kernel: [ 1069.766445] radeon 0000:01:05.0: GPU softreset
Oct  2 23:03:53 magi-01 kernel: [ 1069.766452] radeon 0000:01:05.0:   R_008010_GRBM_STATUS=0xA27334AC
Oct  2 23:03:53 magi-01 kernel: [ 1069.766457] radeon 0000:01:05.0:   R_008014_GRBM_STATUS2=0x00000103
Oct  2 23:03:53 magi-01 kernel: [ 1069.766463] radeon 0000:01:05.0:   R_000E50_SRBM_STATUS=0x20000040
Oct  2 23:03:53 magi-01 kernel: [ 1069.766470] radeon 0000:01:05.0:   R_008020_GRBM_SOFT_RESET=0x00007FEE
Oct  2 23:03:53 magi-01 kernel: [ 1069.781462] radeon 0000:01:05.0: R_008020_GRBM_SOFT_RESET=0x00000001
Oct  2 23:03:53 magi-01 kernel: [ 1069.797451] radeon 0000:01:05.0:   R_008010_GRBM_STATUS=0xA0003030
Oct  2 23:03:53 magi-01 kernel: [ 1069.797453] radeon 0000:01:05.0:   R_008014_GRBM_STATUS2=0x00000003
Oct  2 23:03:53 magi-01 kernel: [ 1069.797454] radeon 0000:01:05.0:   R_000E50_SRBM_STATUS=0x20008040
Oct  2 23:03:53 magi-01 kernel: [ 1069.798455] radeon 0000:01:05.0: GPU reset succeed
Oct  2 23:03:53 magi-01 kernel: [ 1069.800476] [drm] PCIE GART of 512M enabled (table at 0x00000000C0040000).
Oct  2 23:03:53 magi-01 kernel: [ 1069.800490] radeon 0000:01:05.0: WB enabled
Oct  2 23:03:53 magi-01 kernel: [ 1069.800493] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr 0x00000000a0000c00 and cpu addr 0xffff8801146afc00
Oct  2 23:03:53 magi-01 kernel: [ 1069.800534] radeon 0000:01:05.0: setting latency timer to 64
Oct  2 23:03:53 magi-01 kernel: [ 1069.963236] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed (scratch(0x8500)=0xCAFEDEAD)
Oct  2 23:03:53 magi-01 kernel: [ 1069.963238] [drm:r600_resume] *ERROR* r600 startup failed on resume