I can confirm the bug on my i7-3770k (onboard HD 4000). If I revert the commit that Carsten linked in comment #4, I get no such error in dmesg.
Section of dmsg under 3.11.2 without revert: [ 0.738132] fbcon: inteldrmfb (fb0) is primary device [ 0.939391] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting [ 1.022675] [drm:intel_pipe_config_compare] *ERROR* mismatch in pch_pfit.size (expected 0, found 167773600) [ 1.022675] ------------[ cut here ]------------ [ 1.022686] WARNING: CPU: 0 PID: 78 at drivers/gpu/drm/i915/intel_display.c:8299 check_crtc_state+0x59f/0x9d0 [i915]() [ 1.022687] pipe state doesn't match! [ 1.022689] Modules linked in: i915(+) video button i2c_algo_bit intel_agp intel_gtt drm_kms_helper drm i2c_core [ 1.022690] CPU: 0 PID: 78 Comm: modprobe Not tainted 3.11.2-1-custom #1 [ 1.022691] Hardware name: System manufacturer System Product Name/P8Z77-V PRO, BIOS 2104 08/13/2013 [ 1.022693] 0000000000000009 ffff880408647180 ffffffff8147721d ffff8804086471c8 [ 1.022694] ffff8804086471b8 ffffffff81048efd ffff880409a1b6d8 ffff8804085d6800 [ 1.022695] 0000000000000001 ffff8804085d6ca0 ffff880409a1b000 ffff880408647218 [ 1.022696] Call Trace: [ 1.022699] [<ffffffff8147721d>] dump_stack+0x54/0x8d [ 1.022701] [<ffffffff81048efd>] warn_slowpath_common+0x7d/0xa0 [ 1.022702] [<ffffffff81048f6c>] warn_slowpath_fmt+0x4c/0x50 [ 1.022711] [<ffffffffa00be91f>] check_crtc_state+0x59f/0x9d0 [i915] [ 1.022720] [<ffffffffa00c91e3>] intel_modeset_check_state+0x2c3/0x770 [i915] [ 1.022727] [<ffffffffa00c9725>] intel_set_mode+0x25/0x30 [i915] [ 1.022733] [<ffffffffa00c9f92>] intel_crtc_set_config+0x762/0x920 [i915] [ 1.022737] [<ffffffffa001dc5d>] drm_mode_set_config_internal+0x5d/0xe0 [drm] [ 1.022739] [<ffffffffa0064681>] drm_fb_helper_set_par+0x71/0xf0 [drm_kms_helper] [ 1.022741] [<ffffffff812bd2b4>] fbcon_init+0x504/0x580 [ 1.022743] [<ffffffff813180fc>] visual_init+0xbc/0x120 [ 1.022744] [<ffffffff8131a6a3>] do_bind_con_driver+0x163/0x380 [ 1.022745] [<ffffffff8131aea4>] do_take_over_console+0x114/0x1c0 [ 1.022747] [<ffffffff812bd393>] do_fbcon_takeover+0x63/0xd0 [ 1.022748] [<ffffffff812c1ae5>] fbcon_event_notify+0x605/0x720 [ 1.022750] [<ffffffff8148164c>] notifier_call_chain+0x4c/0x70 [ 1.022751] [<ffffffff8106fe3d>] __blocking_notifier_call_chain+0x4d/0x70 [ 1.022752] [<ffffffff8106fe76>] blocking_notifier_call_chain+0x16/0x20 [ 1.022754] [<ffffffff812b190b>] fb_notifier_call_chain+0x1b/0x20 [ 1.022755] [<ffffffff812b38dd>] register_framebuffer+0x1dd/0x310 [ 1.022757] [<ffffffffa006442f>] drm_fb_helper_initial_config+0x32f/0x510 [drm_kms_helper] [ 1.022760] [<ffffffffa001c75f>] ? drm_mode_config_reset+0xcf/0xf0 [drm] [ 1.022762] [<ffffffff8115dfc5>] ? kmem_cache_alloc_trace+0x225/0x270 [ 1.022763] [<ffffffffa00628a9>] ? drm_fb_helper_init+0x179/0x210 [drm_kms_helper] [ 1.022773] [<ffffffffa00ea551>] intel_fbdev_initial_config+0x21/0x30 [i915] [ 1.022781] [<ffffffffa0099351>] i915_driver_load+0xdc1/0xdf0 [i915] [ 1.022785] [<ffffffffa0019486>] drm_get_pci_dev+0x166/0x280 [drm] [ 1.022792] [<ffffffffa009471c>] i915_pci_probe+0x2c/0x70 [i915] [ 1.022794] [<ffffffff81289d7e>] local_pci_probe+0x3e/0x70 [ 1.022796] [<ffffffff81289f71>] pci_device_probe+0x111/0x120 [ 1.022798] [<ffffffff8133b927>] driver_probe_device+0x87/0x3a0 [ 1.022799] [<ffffffff8133bd13>] __driver_attach+0x93/0xa0 [ 1.022800] [<ffffffff8133bc80>] ? __device_attach+0x40/0x40 [ 1.022802] [<ffffffff81339843>] bus_for_each_dev+0x63/0xa0 [ 1.022803] [<ffffffff8133b37e>] driver_attach+0x1e/0x20 [ 1.022804] [<ffffffff8133af18>] bus_add_driver+0x1e8/0x2a0 [ 1.022805] [<ffffffffa012a000>] ? 0xffffffffa0129fff [ 1.022806] [<ffffffff8133c384>] driver_register+0x74/0x150 [ 1.022807] [<ffffffffa012a000>] ? 0xffffffffa0129fff [ 1.022808] [<ffffffff81289bfd>] __pci_register_driver+0x4d/0x50 [ 1.022811] [<ffffffffa00196ba>] drm_pci_init+0x11a/0x130 [drm] [ 1.022812] [<ffffffff8147ac8e>] ? mutex_unlock+0xe/0x10 [ 1.022813] [<ffffffffa012a000>] ? 0xffffffffa0129fff [ 1.022820] [<ffffffffa012a066>] i915_init+0x66/0x68 [i915] [ 1.022821] [<ffffffff810002c2>] do_one_initcall+0xf2/0x1a0 [ 1.022822] [<ffffffff8106fe48>] ? __blocking_notifier_call_chain+0x58/0x70 [ 1.022824] [<ffffffff810aa4c7>] load_module+0x1b17/0x25b0 [ 1.022825] [<ffffffff810a6f10>] ? store_uevent+0x40/0x40 [ 1.022827] [<ffffffff810ab0d6>] SyS_finit_module+0x86/0xb0 [ 1.022829] [<ffffffff81485546>] system_call_fastpath+0x1a/0x1f [ 1.022829] ---[ end trace 90f11c6df3f24fdf ]---
I can confirm the bug on my i7-3770k (onboard HD 4000). If I revert the commit that Carsten linked in comment #4, I get no such error in dmesg.
Section of dmsg under 3.11.2 without revert: dp_complete_ link_train] *ERROR* failed to train DP, aborting pipe_config_ compare] *ERROR* mismatch in pch_pfit.size (expected 0, found 167773600) gpu/drm/ i915/intel_ display. c:8299 check_crtc_ state+0x59f/ 0x9d0 [i915]() 21d>] dump_stack+ 0x54/0x8d efd>] warn_slowpath_ common+ 0x7d/0xa0 f6c>] warn_slowpath_ fmt+0x4c/ 0x50 91f>] check_crtc_ state+0x59f/ 0x9d0 [i915] 1e3>] intel_modeset_ check_state+ 0x2c3/0x770 [i915] 725>] intel_set_ mode+0x25/ 0x30 [i915] f92>] intel_crtc_ set_config+ 0x762/0x920 [i915] c5d>] drm_mode_ set_config_ internal+ 0x5d/0xe0 [drm] 681>] drm_fb_ helper_ set_par+ 0x71/0xf0 [drm_kms_helper] 2b4>] fbcon_init+ 0x504/0x580 0fc>] visual_ init+0xbc/ 0x120 6a3>] do_bind_ con_driver+ 0x163/0x380 ea4>] do_take_ over_console+ 0x114/0x1c0 393>] do_fbcon_ takeover+ 0x63/0xd0 ae5>] fbcon_event_ notify+ 0x605/0x720 64c>] notifier_ call_chain+ 0x4c/0x70 e3d>] __blocking_ notifier_ call_chain+ 0x4d/0x70 e76>] blocking_ notifier_ call_chain+ 0x16/0x20 90b>] fb_notifier_ call_chain+ 0x1b/0x20 8dd>] register_ framebuffer+ 0x1dd/0x310 42f>] drm_fb_ helper_ initial_ config+ 0x32f/0x510 [drm_kms_helper] 75f>] ? drm_mode_ config_ reset+0xcf/ 0xf0 [drm] fc5>] ? kmem_cache_ alloc_trace+ 0x225/0x270 8a9>] ? drm_fb_ helper_ init+0x179/ 0x210 [drm_kms_helper] 551>] intel_fbdev_ initial_ config+ 0x21/0x30 [i915] 351>] i915_driver_ load+0xdc1/ 0xdf0 [i915] 486>] drm_get_ pci_dev+ 0x166/0x280 [drm] 71c>] i915_pci_ probe+0x2c/ 0x70 [i915] d7e>] local_pci_ probe+0x3e/ 0x70 f71>] pci_device_ probe+0x111/ 0x120 927>] driver_ probe_device+ 0x87/0x3a0 d13>] __driver_ attach+ 0x93/0xa0 c80>] ? __device_ attach+ 0x40/0x40 843>] bus_for_ each_dev+ 0x63/0xa0 37e>] driver_ attach+ 0x1e/0x20 f18>] bus_add_ driver+ 0x1e8/0x2a0 000>] ? 0xffffffffa0129fff 384>] driver_ register+ 0x74/0x150 000>] ? 0xffffffffa0129fff bfd>] __pci_register_ driver+ 0x4d/0x50 6ba>] drm_pci_ init+0x11a/ 0x130 [drm] c8e>] ? mutex_unlock+ 0xe/0x10 000>] ? 0xffffffffa0129fff 066>] i915_init+0x66/0x68 [i915] 2c2>] do_one_ initcall+ 0xf2/0x1a0 e48>] ? __blocking_ notifier_ call_chain+ 0x58/0x70 4c7>] load_module+ 0x1b17/ 0x25b0 f10>] ? store_uevent+ 0x40/0x40 0d6>] SyS_finit_ module+ 0x86/0xb0 546>] system_ call_fastpath+ 0x1a/0x1f
[ 0.738132] fbcon: inteldrmfb (fb0) is primary device
[ 0.939391] [drm:intel_
[ 1.022675] [drm:intel_
[ 1.022675] ------------[ cut here ]------------
[ 1.022686] WARNING: CPU: 0 PID: 78 at drivers/
[ 1.022687] pipe state doesn't match!
[ 1.022689] Modules linked in: i915(+) video button i2c_algo_bit intel_agp intel_gtt drm_kms_helper drm i2c_core
[ 1.022690] CPU: 0 PID: 78 Comm: modprobe Not tainted 3.11.2-1-custom #1
[ 1.022691] Hardware name: System manufacturer System Product Name/P8Z77-V PRO, BIOS 2104 08/13/2013
[ 1.022693] 0000000000000009 ffff880408647180 ffffffff8147721d ffff8804086471c8
[ 1.022694] ffff8804086471b8 ffffffff81048efd ffff880409a1b6d8 ffff8804085d6800
[ 1.022695] 0000000000000001 ffff8804085d6ca0 ffff880409a1b000 ffff880408647218
[ 1.022696] Call Trace:
[ 1.022699] [<ffffffff81477
[ 1.022701] [<ffffffff81048
[ 1.022702] [<ffffffff81048
[ 1.022711] [<ffffffffa00be
[ 1.022720] [<ffffffffa00c9
[ 1.022727] [<ffffffffa00c9
[ 1.022733] [<ffffffffa00c9
[ 1.022737] [<ffffffffa001d
[ 1.022739] [<ffffffffa0064
[ 1.022741] [<ffffffff812bd
[ 1.022743] [<ffffffff81318
[ 1.022744] [<ffffffff8131a
[ 1.022745] [<ffffffff8131a
[ 1.022747] [<ffffffff812bd
[ 1.022748] [<ffffffff812c1
[ 1.022750] [<ffffffff81481
[ 1.022751] [<ffffffff8106f
[ 1.022752] [<ffffffff8106f
[ 1.022754] [<ffffffff812b1
[ 1.022755] [<ffffffff812b3
[ 1.022757] [<ffffffffa0064
[ 1.022760] [<ffffffffa001c
[ 1.022762] [<ffffffff8115d
[ 1.022763] [<ffffffffa0062
[ 1.022773] [<ffffffffa00ea
[ 1.022781] [<ffffffffa0099
[ 1.022785] [<ffffffffa0019
[ 1.022792] [<ffffffffa0094
[ 1.022794] [<ffffffff81289
[ 1.022796] [<ffffffff81289
[ 1.022798] [<ffffffff8133b
[ 1.022799] [<ffffffff8133b
[ 1.022800] [<ffffffff8133b
[ 1.022802] [<ffffffff81339
[ 1.022803] [<ffffffff8133b
[ 1.022804] [<ffffffff8133a
[ 1.022805] [<ffffffffa012a
[ 1.022806] [<ffffffff8133c
[ 1.022807] [<ffffffffa012a
[ 1.022808] [<ffffffff81289
[ 1.022811] [<ffffffffa0019
[ 1.022812] [<ffffffff8147a
[ 1.022813] [<ffffffffa012a
[ 1.022820] [<ffffffffa012a
[ 1.022821] [<ffffffff81000
[ 1.022822] [<ffffffff8106f
[ 1.022824] [<ffffffff810aa
[ 1.022825] [<ffffffff810a6
[ 1.022827] [<ffffffff810ab
[ 1.022829] [<ffffffff81485
[ 1.022829] ---[ end trace 90f11c6df3f24fdf ]---