Re: Radeon Verde displayport failure.

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On Mon, May 11, 2015 at 03:59:55PM -0400, Alex Deucher wrote:
 
 > Can you attach your boot dmesg output with drm.debug=0xf set?

Strange, haven't seen this happen before.

[    8.437431] [drm:drm_calc_vbltimestamp_from_scanoutpos] crtc 5: Noop due to uninitialized mode.
[    8.437433] [drm:drm_update_vblank_count] updating vblank count on crtc 5, missed 0
[    8.437444] [drm:drm_helper_probe_single_connector_modes_merge_bits] [CONNECTOR:40:DP-1]
[    8.437506] [drm:si_irq_process] si_irq_process start: rptr 208, wptr 224
[    8.437523] [drm:si_irq_process] si_irq_process start: rptr 224, wptr 224
[    8.440711] [drm:radeon_dp_getdpcd] DPCD: 12 14 c4 01 01 01 01 81 02 00 06 00 00 00 00
[    8.441242] [drm:radeon_dp_aux_transfer_native] dp_aux_ch flags not zero: 04001001
[    8.441758] [drm:radeon_dp_probe_oui] Branch OUI: 00e04c
[    8.442204] [drm:radeon_dp_mst_probe] Sink is MST capable
[    8.742140] Oops: 0000 [#1] PREEMPT SMP 
[    8.742150] CPU: 3 PID: 418 Comm: systemd-udevd Not tainted 4.1.0-rc3-wopr+ #3
[    8.742156] task: ffff88080a09f290 ti: ffff880808224000 task.ti: ffff880808224000
[    8.742160] RIP: 0010:[<ffffffff863baf70>]  [<ffffffff863baf70>] __list_add+0x50/0xe0
[    8.742167] RSP: 0018:ffff8808082276b8  EFLAGS: 00010246
[    8.742170] RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 0000000000000000
[    8.742173] RDX: ffff880805871720 RSI: 0000000000000000 RDI: ffff8808082276f8
[    8.742175] RBP: ffff8808082276e8 R08: ffff880808224000 R09: 0000000000000000
[    8.742178] R10: 000000000000003d R11: 000000000000053e R12: ffff880805871720
[    8.742181] R13: ffff88080a09f290 R14: 00000000ffffffff R15: ffff880805871720
[    8.742184] FS:  00007f16f77bd880(0000) GS:ffff88080f2c0000(0000) knlGS:0000000000000000
[    8.742188] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.742190] CR2: 0000000000000000 CR3: 000000080820b000 CR4: 00000000001407e0
[    8.742193] Stack:
[    8.742195]  0000000000000001 ffff880805871718 0000000000000001 ffff880805871718
[    8.742200]  ffff88080587171c ffff88080a09f290 ffff880808227748 ffffffff866ec970
[    8.742205]  ffff880808227758 ffffffff866e5488 0000000000000018 00000000bea51cc4
[    8.742210] Call Trace:
[    8.742216]  [<ffffffff866ec970>] __mutex_lock_slowpath+0x80/0x150
[    8.742220]  [<ffffffff866e5488>] ? printk+0x55/0x6b
[    8.742223]  [<ffffffff866eca5b>] mutex_lock+0x1b/0x30
[    8.742230]  [<ffffffffc04667da>] drm_dp_mst_topology_mgr_set_mst+0x3a/0x3e0 [drm_kms_helper]
[    8.742251]  [<ffffffffc075591a>] radeon_dp_mst_probe+0xaa/0x100 [radeon]
[    8.742268]  [<ffffffffc068e04d>] radeon_dp_detect+0x26d/0x2f0 [radeon]
[    8.742273]  [<ffffffffc0462de8>] drm_helper_probe_single_connector_modes_merge_bits+0x2c8/0x510 [drm_kms_helper]
[    8.742278]  [<ffffffffc0463043>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[    8.742285]  [<ffffffffc046ce40>] drm_fb_helper_probe_connector_modes.isra.3+0x50/0x70 [drm_kms_helper]
[    8.742291]  [<ffffffffc046e26a>] drm_fb_helper_initial_config+0x5a/0x410 [drm_kms_helper]
[    8.742304]  [<ffffffffc049c3f2>] ? drm_modeset_unlock_all+0x42/0x70 [drm]
[    8.742321]  [<ffffffffc069a4a4>] radeon_fbdev_init+0xf4/0x120 [radeon]
[    8.742335]  [<ffffffffc0693704>] radeon_modeset_init+0x484/0xa60 [radeon]
[    8.742354]  [<ffffffffc075231a>] ? radeon_ib_ring_tests+0x5a/0xc0 [radeon]
[    8.742368]  [<ffffffffc06684e0>] radeon_driver_load_kms+0x140/0x250 [radeon]
[    8.742375]  [<ffffffffc0485aa5>] drm_dev_register+0xb5/0x110 [drm]
[    8.742382]  [<ffffffffc0488b9d>] drm_get_pci_dev+0x8d/0x200 [drm]
[    8.742394]  [<ffffffffc064a4b3>] radeon_pci_probe+0xa3/0xd0 [radeon]
[    8.742398]  [<ffffffff863d96fc>] pci_device_probe+0x8c/0xf0
[    8.742402]  [<ffffffff864bd049>] driver_probe_device+0x159/0x4c0
[    8.742405]  [<ffffffff864bd48b>] __driver_attach+0x9b/0xa0
[    8.742408]  [<ffffffff864bd3f0>] ? __device_attach+0x40/0x40
[    8.742412]  [<ffffffff864bac53>] bus_for_each_dev+0x73/0xc0
[    8.742415]  [<ffffffff864bc9de>] driver_attach+0x1e/0x20
[    8.742418]  [<ffffffff864bc5b0>] bus_add_driver+0x180/0x250
[    8.742421]  [<ffffffff864bd8f4>] driver_register+0x64/0xf0
[    8.742425]  [<ffffffff863d8b0b>] __pci_register_driver+0x4b/0x50
[    8.742432]  [<ffffffffc0488e0a>] drm_pci_init+0xfa/0x130 [drm]
[    8.742436]  [<ffffffffc082d000>] ? 0xffffffffc082d000
[    8.742448]  [<ffffffffc082d0dd>] radeon_init+0xdd/0xdf [radeon]
[    8.742454]  [<ffffffff860002f8>] do_one_initcall+0xd8/0x200
[    8.742458]  [<ffffffff86194ee2>] ? __vunmap+0xa2/0x100
[    8.742462]  [<ffffffff861a8003>] ? kfree+0x173/0x180
[    8.742465]  [<ffffffff866e56e2>] do_init_module+0x61/0x1cc
[    8.742469]  [<ffffffff860f2970>] load_module+0x1f90/0x23b0
[    8.742472]  [<ffffffff860ee260>] ? store_uevent+0x70/0x70
[    8.742476]  [<ffffffff860eed65>] ? copy_module_from_fd.isra.48+0xe5/0x1a0
[    8.742479]  [<ffffffff860eedb2>] ? copy_module_from_fd.isra.48+0x132/0x1a0
[    8.742483]  [<ffffffff8610c43b>] ? __acct_update_integrals+0x8b/0x120
[    8.742486]  [<ffffffff860f2fa6>] SyS_finit_module+0xa6/0xe0
[    8.742490]  [<ffffffff866eed57>] system_call_fastpath+0x12/0x6a
[    8.742493] Code: c1 30 cc 84 86 31 c0 48 c7 c2 38 83 a3 86 be 1a 00 00 00 48 c7 c7 b8 7d a3 86 e8 cc d8 cb ff 48 83 c4 18 5b 41 5c 41 5d 5d c3 90 <4c> 8b 0e 4c 39 ca 74 38 48 89 34 24 49 89 d0 48 c7 c1 30 cc 84 

 
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