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108 | [ 2.972299] ------------[ cut here ]------------
[ 2.972403] WARNING: CPU: 0 PID: 26 at /build/linux-xK5wks/linux-4.4.0/drivers/gpu/drm/i915/intel_fbdev.c:406 intel_fb_initial_config+0x2d4/0x5f0 [i915]()
[ 2.972406] WARN_ON(!encoder->crtc)
[ 2.972408] Modules linked in:
[ 2.972410] i915(+) i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops e100 drm mii pata_acpi wmi video fjes
[ 2.972424] CPU: 0 PID: 26 Comm: kworker/u2:1 Not tainted 4.4.0-31-generic #50-Ubuntu
[ 2.972426] Hardware name: Hewlett-Packard HP 510 Notebook PC (RU964AA#ABU)/30C4, BIOS 68DTV Ver. F.08 07/10/2007
[ 2.972435] Workqueue: events_unbound async_run_entry_fn
[ 2.972438] c1acd967 030ed91c 00000286 f346fd04 c13a689f f346fd44 f8b8d904 f346fd34
[ 2.972443] c1070317 f8b9847c f346fd64 0000001a f8b8d904 00000196 f8b3d614 f8b3d614
[ 2.972447] 00000000 00000001 00000001 f346fd50 c107038e 00000009 f346fd44 f8b9847c
[ 2.972452] Call Trace:
[ 2.972459] [<c13a689f>] dump_stack+0x58/0x79
[ 2.972465] [<c1070317>] warn_slowpath_common+0x87/0xc0
[ 2.972510] [<f8b3d614>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 2.972555] [<f8b3d614>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 2.972558] [<c107038e>] warn_slowpath_fmt+0x3e/0x60
[ 2.972603] [<f8b3d614>] intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 2.972648] [<f8b3d340>] ? intel_crtc_fb_gamma_get+0x40/0x40 [i915]
[ 2.972672] [<f85ad58f>] drm_setup_crtcs+0x21f/0xa90 [drm_kms_helper]
[ 2.972676] [<c10977d7>] ? ttwu_do_wakeup+0x17/0x110
[ 2.972680] [<c10982b9>] ? try_to_wake_up+0x39/0x360
[ 2.972682] [<c10985f4>] ? wake_up_process+0x14/0x20
[ 2.972693] [<f85ae0ac>] drm_fb_helper_initial_config+0xbc/0x400 [drm_kms_helper]
[ 2.972697] [<c10aa139>] ? pick_next_task_fair+0x459/0x520
[ 2.972742] [<f8b3e509>] intel_fbdev_initial_config+0x19/0x20 [i915]
[ 2.972746] [<c108f5be>] async_run_entry_fn+0x4e/0x170
[ 2.972751] [<c1087791>] process_one_work+0x121/0x3f0
[ 2.972754] [<c1087a97>] worker_thread+0x37/0x490
[ 2.972757] [<c1087a60>] ? process_one_work+0x3f0/0x3f0
[ 2.972759] [<c108cf46>] kthread+0xa6/0xc0
[ 2.972764] [<c17b1f49>] ret_from_kernel_thread+0x21/0x38
[ 2.972767] [<c108cea0>] ? kthread_create_on_node+0x170/0x170
[ 2.972769] ---[ end trace 0cd83e2ea5a65706 ]---
[ 2.981134] fbcon: inteldrmfb (fb0) is primary device
[ 2.982833] Console: switching to colour frame buffer device 160x50
[ 2.982883] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 3.000291] ------------[ cut here ]------------
[ 3.000388] WARNING: CPU: 0 PID: 79 at /build/linux-xK5wks/linux-4.4.0/drivers/gpu/drm/i915/intel_fbdev.c:406 intel_fb_initial_config+0x2d4/0x5f0 [i915]()
[ 3.000390] WARN_ON(!encoder->crtc)
[ 3.000392] Modules linked in:
[ 3.000394] i915(+) i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops e100 drm mii pata_acpi wmi video fjes
[ 3.000407] CPU: 0 PID: 79 Comm: kworker/0:2 Tainted: G W 4.4.0-31-generic #50-Ubuntu
[ 3.000410] Hardware name: Hewlett-Packard HP 510 Notebook PC (RU964AA#ABU)/30C4, BIOS 68DTV Ver. F.08 07/10/2007
[ 3.000431] Workqueue: events output_poll_execute [drm_kms_helper]
[ 3.000433] c1acd967 f61fe29c 00000286 f588fd24 c13a689f f588fd64 f8b8d904 f588fd54
[ 3.000439] c1070317 f8b9847c f588fd84 0000004f f8b8d904 00000196 f8b3d614 f8b3d614
[ 3.000443] 00000000 00000001 00000001 f588fd70 c107038e 00000009 f588fd64 f8b9847c
[ 3.000448] Call Trace:
[ 3.000456] [<c13a689f>] dump_stack+0x58/0x79
[ 3.000462] [<c1070317>] warn_slowpath_common+0x87/0xc0
[ 3.000507] [<f8b3d614>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.000552] [<f8b3d614>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.000555] [<c107038e>] warn_slowpath_fmt+0x3e/0x60
[ 3.000600] [<f8b3d614>] intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.000645] [<f8b3d340>] ? intel_crtc_fb_gamma_get+0x40/0x40 [i915]
[ 3.000656] [<f85ad58f>] drm_setup_crtcs+0x21f/0xa90 [drm_kms_helper]
[ 3.000661] [<c10977d7>] ? ttwu_do_wakeup+0x17/0x110
[ 3.000666] [<c17aff77>] ? __ww_mutex_lock+0x17/0xa0
[ 3.000712] [<f891fff4>] ? drm_modeset_lock_all_ctx+0x94/0xb0 [drm]
[ 3.000723] [<f85adebd>] drm_fb_helper_hotplug_event+0xbd/0x120 [drm_kms_helper]
[ 3.000768] [<f8b3e6ba>] intel_fbdev_output_poll_changed+0x1a/0x20 [i915]
[ 3.000777] [<f85a15e1>] drm_kms_helper_hotplug_event+0x21/0x30 [drm_kms_helper]
[ 3.000786] [<f85a17d8>] output_poll_execute+0x188/0x1c0 [drm_kms_helper]
[ 3.000790] [<c1087791>] process_one_work+0x121/0x3f0
[ 3.000794] [<c1087a97>] worker_thread+0x37/0x490
[ 3.000797] [<c1087a60>] ? process_one_work+0x3f0/0x3f0
[ 3.000800] [<c108cf46>] kthread+0xa6/0xc0
[ 3.000804] [<c17b1f49>] ret_from_kernel_thread+0x21/0x38
[ 3.000807] [<c108cea0>] ? kthread_create_on_node+0x170/0x170
[ 3.000809] ---[ end trace 0cd83e2ea5a65707 ]---
[ 3.001010] ------------[ cut here ]------------
[ 3.001021] WARNING: CPU: 0 PID: 79 at /build/linux-xK5wks/linux-4.4.0/drivers/gpu/drm/drm_atomic_helper.c:723 drm_atomic_helper_update_legacy_modeset_state+0x26a/0x280 [drm_kms_helper]()
[ 3.001023] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops e100 drm mii pata_acpi wmi video fjes
[ 3.001034] CPU: 0 PID: 79 Comm: kworker/0:2 Tainted: G W 4.4.0-31-generic #50-Ubuntu
[ 3.001036] Hardware name: Hewlett-Packard HP 510 Notebook PC (RU964AA#ABU)/30C4, BIOS 68DTV Ver. F.08 07/10/2007
[ 3.001045] Workqueue: events output_poll_execute [drm_kms_helper]
[ 3.001046] c1acd967 f61fe29c 00000286 f588fd54 c13a689f 00000000 f85b0fb0 f588fd84
[ 3.001051] c1070317 c19c0588 00000000 0000004f f85b0fb0 000002d3 f85a88aa f85a88aa
[ 3.001056] f5bbd800 00000000 f597e600 f588fd94 c1070422 00000009 00000000 f588fdbc
[ 3.001061] Call Trace:
[ 3.001064] [<c13a689f>] dump_stack+0x58/0x79
[ 3.001067] [<c1070317>] warn_slowpath_common+0x87/0xc0
[ 3.001077] [<f85a88aa>] ? drm_atomic_helper_update_legacy_modeset_state+0x26a/0x280 [drm_kms_helper]
[ 3.001087] [<f85a88aa>] ? drm_atomic_helper_update_legacy_modeset_state+0x26a/0x280 [drm_kms_helper]
[ 3.001090] [<c1070422>] warn_slowpath_null+0x22/0x30
[ 3.001100] [<f85a88aa>] drm_atomic_helper_update_legacy_modeset_state+0x26a/0x280 [drm_kms_helper]
[ 3.001145] [<f8b286a8>] ? intel_pre_plane_update+0xd8/0x130 [i915]
[ 3.001189] [<f8b2909a>] intel_atomic_commit+0x52a/0x6a0 [i915]
[ 3.001212] [<f89212be>] ? drm_atomic_check_only+0x1ae/0x600 [drm]
[ 3.001234] [<f891fed9>] ? drm_modeset_lock+0x49/0xd0 [drm]
[ 3.001257] [<f89207dc>] ? drm_atomic_set_crtc_for_connector+0x5c/0xe0 [drm]
[ 3.001279] [<f8921742>] drm_atomic_commit+0x32/0x60 [drm]
[ 3.001290] [<f85abef3>] restore_fbdev_mode+0x253/0x290 [drm_kms_helper]
[ 3.001312] [<f891fff4>] ? drm_modeset_lock_all_ctx+0x94/0xb0 [drm]
[ 3.001323] [<f85adf47>] drm_fb_helper_restore_fbdev_mode_unlocked+0x27/0x70 [drm_kms_helper]
[ 3.001332] [<f85adfbd>] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper]
[ 3.001342] [<f85adecc>] drm_fb_helper_hotplug_event+0xcc/0x120 [drm_kms_helper]
[ 3.001387] [<f8b3e6ba>] intel_fbdev_output_poll_changed+0x1a/0x20 [i915]
[ 3.001396] [<f85a15e1>] drm_kms_helper_hotplug_event+0x21/0x30 [drm_kms_helper]
[ 3.001405] [<f85a17d8>] output_poll_execute+0x188/0x1c0 [drm_kms_helper]
[ 3.001409] [<c1087791>] process_one_work+0x121/0x3f0
[ 3.001412] [<c1087a97>] worker_thread+0x37/0x490
[ 3.001415] [<c1087a60>] ? process_one_work+0x3f0/0x3f0
[ 3.001417] [<c108cf46>] kthread+0xa6/0xc0
[ 3.001420] [<c17b1f49>] ret_from_kernel_thread+0x21/0x38
[ 3.001423] [<c108cea0>] ? kthread_create_on_node+0x170/0x170
[ 3.001425] ---[ end trace 0cd83e2ea5a65708 ]---
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