Comment # 14
on bug 111642
from Vasili Pupkin
The system has two identical card installed (I completely forgotten about this fact because no monitor is connected to the second adapter). I've connected monitor to the second one and it only shows cursor, no window is shown when I move one to the second monitor. Ok. I removed the second card and nouveau stop spinning dmesg with those messages. The freezes remains and it feels less stable with one card than it was with two cards, rarely survive more than five minutes. So there are two questions: Are those messages a bug or the two adapter setup require some additional configuration to work properly? How to debug freezes? Ctrl+Alt+F2 doesn't work. I've found this stacktrace in syslog at the end, not sure if it is the last stack before crash ------------[ cut here ]------------ nouveau 0000:01:00.0: timeout .... .... Call Trace: nvkm_vmm_iter.constprop.12+0x2e5/0x880 [nouveau] ? nv41_vmm_pgt_sgl+0x140/0x140 [nouveau] ? nvkm_vmm_free_insert+0x80/0x80 [nouveau] ? nvkm_vmm_put_region+0xd0/0x160 [nouveau] nvkm_vmm_ptes_unmap_put+0x32/0x50 [nouveau] ? nv41_vmm_pgt_sgl+0x140/0x140 [nouveau] nvkm_vmm_put_locked+0x103/0x220 [nouveau] nvkm_uvmm_mthd+0x7eb/0x850 [nouveau] nvkm_object_mthd+0x1a/0x30 [nouveau] nvkm_ioctl_mthd+0x5d/0xb0 [nouveau] nvkm_ioctl+0x11d/0x280 [nouveau] nvkm_client_ioctl+0x12/0x20 [nouveau] nvif_object_ioctl+0x47/0x50 [nouveau] nvif_object_mthd+0x129/0x150 [nouveau] ? __ttm_dma_free_page.isra.5+0x32/0x40 [ttm] ? isolate_huge_page+0x30/0xa0 ? __ttm_dma_free_page.isra.5+0x32/0x40 [ttm] ? ttm_dma_page_put+0x53/0x90 [ttm] nvif_vmm_put+0x5f/0x80 [nouveau] nouveau_mem_fini+0x3b/0x70 [nouveau] nv04_sgdma_unbind+0x12/0x20 [nouveau] ttm_tt_unbind+0x21/0x40 [ttm] ttm_tt_destroy.part.12+0x12/0x60 [ttm] ttm_tt_destroy+0x13/0x20 [ttm] ttm_bo_cleanup_memtype_use+0x32/0x70 [ttm] ttm_bo_cleanup_refs+0x1c0/0x200 [ttm] ? ttm_mem_global_free+0x13/0x20 [ttm] ttm_bo_delayed_delete+0x1cd/0x1e0 [ttm] ttm_bo_delayed_workqueue+0x1b/0x40 [ttm] process_one_work+0x1fd/0x400 worker_thread+0x34/0x410 kthread+0x121/0x140 ? process_one_work+0x400/0x400 ? kthread_park+0x90/0x90 ret_from_fork+0x35/0x40
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