[ 1.146652] [drm] Initialized drm 1.1.0 20060810 [ 1.147572] [drm] Memory usable by graphics device = 2048M [ 1.147577] checking generic (e0000000 7e9000) vs hw (e0000000 10000000) [ 1.147579] fb: switching to inteldrmfb from EFI VGA [ 1.147601] Console: switching to colour dummy device 80x25 [ 1.147801] [drm] Replacing VGA console driver [ 1.154895] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.154898] [drm] Driver supports precise vblank timestamp query. [ 1.154993] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 1.164981] ------------[ cut here ]------------ [ 1.164991] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/i915/intel_display.c:469 intel_pipe_will_have_type.isra.30+0x81/0x90() [ 1.164993] WARN_ON(num_connectors == 0) [ 1.164994] Modules linked in: [ 1.164999] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G I 4.1.0-2-ck #1 [ 1.165001] Hardware name: Notebook W840SU Series /W840SU Series , BIOS 4.6.5 11/26/2013 [ 1.165003] 0000000000000000 0000000070c8ded7 ffff8802169cb3e8 ffffffff819e4af5 [ 1.165006] 0000000000000000 ffff8802169cb440 ffff8802169cb428 ffffffff810ea2aa [ 1.165009] 0000000000000000 ffff880216291000 ffff8802169cb570 ffff8802161ff800 [ 1.165012] Call Trace: [ 1.165020] [] dump_stack+0x4c/0x6e [ 1.165024] [] warn_slowpath_common+0x8a/0xc0 [ 1.165027] [] warn_slowpath_fmt+0x55/0x70 [ 1.165031] [] intel_pipe_will_have_type.isra.30+0x81/0x90 [ 1.165035] [] intel_modeset_pipe_config+0x24f/0x900 [ 1.165039] [] ? drm_vblank_on+0x99/0x120 [ 1.165042] [] intel_sanitize_crtc+0x2b3/0x600 [ 1.165045] [] ? hsw_write64+0x150/0x150 [ 1.165051] [] intel_modeset_setup_hw_state+0x57e/0xc40 [ 1.165057] [] ? drm_modeset_lock_all_crtcs+0xa1/0xb0 [ 1.165059] [] ? __drm_modeset_lock_all+0x118/0x140 [ 1.165062] [] intel_modeset_init+0x992/0x18d0 [ 1.165065] [] ? ironlake_irq_postinstall+0xca/0x1b0 [ 1.165069] [] i915_driver_load+0xd45/0x14c0 [ 1.165074] [] ? add_uevent_var+0x7b/0x130 [ 1.165078] [] ? kobject_uevent_env+0x170/0x540 [ 1.165083] [] ? devtmpfs_create_node+0x10d/0x150 [ 1.165086] [] ? get_device+0x17/0x30 [ 1.165088] [] ? klist_class_dev_get+0x15/0x20 [ 1.165093] [] ? klist_node_init+0x37/0x60 [ 1.165096] [] ? device_add+0x222/0x640 [ 1.165099] [] drm_dev_register+0xb5/0x110 [ 1.165102] [] drm_get_pci_dev+0xda/0x200 [ 1.165105] [] i915_pci_probe+0x3b/0x60 [ 1.165110] [] pci_device_probe+0x8c/0xf0 [ 1.165113] [] driver_probe_device+0x209/0x4c0 [ 1.165115] [] __driver_attach+0x9b/0xa0 [ 1.165117] [] ? __device_attach+0x40/0x40 [ 1.165120] [] bus_for_each_dev+0x73/0xc0 [ 1.165124] [] driver_attach+0x1e/0x20 [ 1.165127] [] bus_add_driver+0x180/0x250 [ 1.165129] [] driver_register+0x64/0xf0 [ 1.165133] [] __pci_register_driver+0x4b/0x50 [ 1.165136] [] drm_pci_init+0xf5/0x120 [ 1.165140] [] ? mipi_dsi_bus_init+0x12/0x12 [ 1.165143] [] i915_init+0xa0/0xa8 [ 1.165146] [] do_one_initcall+0xb8/0x200 [ 1.165150] [] kernel_init_freeable+0x174/0x215 [ 1.165153] [] ? rest_init+0x90/0x90 [ 1.165156] [] kernel_init+0xe/0xf0 [ 1.165160] [] ret_from_fork+0x42/0x70 [ 1.165164] [] ? rest_init+0x90/0x90 [ 1.165166] ---[ end trace a64e236dde5aab0b ]--- [ 1.165170] [drm:intel_pipe_config_compare] *ERROR* mismatch in cpu_transcoder (expected 0, found 3) [ 1.165174] [drm:intel_pipe_config_compare] *ERROR* mismatch in has_dp_encoder (expected 0, found 1) [ 1.165177] [drm:intel_pipe_config_compare] *ERROR* mismatch in dp_m_n.gmch_m (expected 0, found 4928307) [ 1.165180] [drm:intel_pipe_config_compare] *ERROR* mismatch in dp_m_n.gmch_n (expected 0, found 8388608) [ 1.165184] [drm:intel_pipe_config_compare] *ERROR* mismatch in dp_m_n.link_m (expected 0, found 273794) [ 1.165187] [drm:intel_pipe_config_compare] *ERROR* mismatch in dp_m_n.link_n (expected 0, found 524288) [ 1.165190] [drm:intel_pipe_config_compare] *ERROR* mismatch in dp_m_n.tu (expected 0, found 64) [ 1.165194] [drm:intel_pipe_config_compare] *ERROR* mismatch in pipe_bpp (expected 36, found 18) [ 1.165198] [drm:intel_pipe_config_compare] *ERROR* mismatch in port_clock (expected 140999, found 270000) [ 1.165210] [drm:intel_modeset_setup_hw_state] *ERROR* Failed to restore previous mode [ 1.172154] fbcon: inteldrmfb (fb0) is primary device [ 1.172223] ------------[ cut here ]------------ [ 1.172228] WARNING: CPU: 2 PID: 6 at drivers/gpu/drm/i915/intel_uncore.c:620 hsw_unclaimed_reg_debug+0x79/0xa0() [ 1.172229] Unclaimed register detected after writing to register 0x7129c [ 1.172230] Modules linked in: [ 1.172232] CPU: 2 PID: 6 Comm: kworker/u8:0 Tainted: G W I 4.1.0-2-ck #1 [ 1.172233] Hardware name: Notebook W840SU Series /W840SU Series , BIOS 4.6.5 11/26/2013 [ 1.172236] Workqueue: events_unbound async_run_entry_fn [ 1.172239] 0000000000000000 0000000041e39ea4 ffff880216a83678 ffffffff819e4af5 [ 1.172241] 0000000000000000 ffff880216a836d0 ffff880216a836b8 ffffffff810ea2aa [ 1.172243] ffff880216a836a8 ffff880215610000 000000000007129c ffff880215610080 [ 1.172243] Call Trace: [ 1.172247] [] dump_stack+0x4c/0x6e [ 1.172250] [] warn_slowpath_common+0x8a/0xc0 [ 1.172252] [] warn_slowpath_fmt+0x55/0x70 [ 1.172254] [] hsw_unclaimed_reg_debug+0x79/0xa0 [ 1.172256] [] hsw_write32+0x97/0x160 [ 1.172258] [] ? hsw_write64+0x150/0x150 [ 1.172261] [] ivb_disable_plane+0xab/0xd0 [ 1.172263] [] intel_disable_planes_on_crtc+0x73/0x90 [ 1.172265] [] intel_begin_crtc_commit+0x75/0x110 [ 1.172268] [] drm_atomic_helper_commit_planes_on_crtc+0x55/0x270 [ 1.172270] [] ? intel_pre_plane_update+0x1a0/0x210 [ 1.172272] [] intel_atomic_commit+0x720/0x970 [ 1.172274] [] ? drm_atomic_check_only+0x242/0x5a0 [ 1.172275] [] drm_atomic_commit+0x39/0x60 [ 1.172277] [] drm_atomic_helper_plane_set_property+0x8d/0xd0 [ 1.172281] [] drm_mode_plane_set_obj_prop+0x2d/0x90 [ 1.172283] [] restore_fbdev_mode+0x6b/0xf0 [ 1.172286] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [ 1.172288] [] drm_fb_helper_set_par+0x22/0x50 [ 1.172290] [] intel_fbdev_set_par+0x1a/0x60 [ 1.172292] [] fbcon_init+0x58f/0x610 [ 1.172295] [] visual_init+0xbc/0x120 [ 1.172298] [] do_bind_con_driver+0x1ce/0x400 [ 1.172300] [] do_take_over_console+0x120/0x1b0 [ 1.172302] [] ? printk+0x55/0x6b [ 1.172304] [] do_fbcon_takeover+0x5b/0xc0 [ 1.172306] [] fbcon_event_notify+0x6e5/0x7e0 [ 1.172310] [] notifier_call_chain+0x4f/0x80 [ 1.172312] [] __blocking_notifier_call_chain+0x4b/0x70 [ 1.172313] [] blocking_notifier_call_chain+0x16/0x20 [ 1.172315] [] fb_notifier_call_chain+0x1b/0x20 [ 1.172317] [] register_framebuffer+0x21a/0x380 [ 1.172320] [] drm_fb_helper_initial_config+0x273/0x460 [ 1.172322] [] intel_fbdev_initial_config+0x1b/0x20 [ 1.172323] [] async_run_entry_fn+0x4c/0x170 [ 1.172326] [] process_one_work+0x14e/0x470 [ 1.172327] [] worker_thread+0x48/0x4c0 [ 1.172329] [] ? process_one_work+0x470/0x470 [ 1.172331] [] kthread+0xd8/0xf0 [ 1.172334] [] ? kthread_worker_fn+0x170/0x170 [ 1.172336] [] ret_from_fork+0x42/0x70 [ 1.172338] [] ? kthread_worker_fn+0x170/0x170 [ 1.172339] ---[ end trace a64e236dde5aab0c ]--- [ 1.172567] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [ 1.172690] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input4 [ 1.172710] [drm] Initialized i915 1.6.0 20150522 for 0000:00:02.0 on minor 0 [ 1.174595] loop: module loaded [ 1.178843] [drm:intel_uncore_check_errors] *ERROR* Unclaimed register before interrupt