Still valid for 3.19.3 FWIW, here is my journalctl output:

Mär 27 08:30:08 teefax kernel: [drm] Memory usable by graphics device = 256M
Mär 27 08:30:08 teefax kernel: checking generic (d0000000 130000) vs hw (d0000000 10000000)
Mär 27 08:30:08 teefax kernel: fb: switching to inteldrmfb from VESA VGA
Mär 27 08:30:08 teefax kernel: Console: switching to colour dummy device 80x25
Mär 27 08:30:08 teefax kernel: [drm] Replacing VGA console driver
Mär 27 08:30:08 teefax kernel: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
Mär 27 08:30:08 teefax kernel: [drm] Driver supports precise vblank timestamp query.
Mär 27 08:30:08 teefax kernel: vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
Mär 27 08:30:08 teefax kernel: [drm] initialized overlay support
Mär 27 08:30:08 teefax kernel: [drm] Initialized i915 1.6.0 20141121 for 0000:00:02.0 on minor 0
Mär 27 08:30:08 teefax kernel: ------------[ cut here ]------------
Mär 27 08:30:08 teefax kernel: WARNING: CPU: 0 PID: 80 at drivers/gpu/drm/drm_irq.c:1121 drm_wait_one_vblank+0x154/0x160 [drm]()
Mär 27 08:30:08 teefax kernel: vblank not available on crtc 0, ret=-22
Mär 27 08:30:08 teefax kernel: Modules linked in: i915 iTCO_wdt iTCO_vendor_support ppdev evdev drm_kms_helper gpio_ich mac_hid r8169 pa
Mär 27 08:30:08 teefax kernel: CPU: 0 PID: 80 Comm: kworker/u4:4 Not tainted 3.19.3-1-ck #1
Mär 27 08:30:08 teefax kernel: Hardware name:                  /D945GSEJT, BIOS JT94510H.86A.0045.2010.0519.1750 05/19/2010
Mär 27 08:30:08 teefax kernel: Workqueue: events_unbound async_run_entry_fn
Mär 27 08:30:08 teefax kernel:  c15df987 fe207313 00000000 f51ebab8 c1474bdd f51ebafc f51ebaec c10533ab
Mär 27 08:30:08 teefax kernel:  f84e18a8 f51ebb1c 00000050 f84df963 00000461 f84bc194 00000461 f84bc194
Mär 27 08:30:08 teefax kernel:  f5c60000 f5c78400 00000000 f51ebb08 c105341e 00000009 f51ebafc f84e18a8
Mär 27 08:30:08 teefax kernel: Call Trace:
Mär 27 08:30:08 teefax kernel:  [<c1474bdd>] dump_stack+0x48/0x69
Mär 27 08:30:08 teefax kernel:  [<c10533ab>] warn_slowpath_common+0x8b/0xc0
Mär 27 08:30:08 teefax kernel:  [<f84bc194>] ? drm_wait_one_vblank+0x154/0x160 [drm]
Mär 27 08:30:08 teefax kernel:  [<f84bc194>] ? drm_wait_one_vblank+0x154/0x160 [drm]
Mär 27 08:30:08 teefax kernel:  [<c105341e>] warn_slowpath_fmt+0x3e/0x60
Mär 27 08:30:08 teefax kernel:  [<f84bc194>] drm_wait_one_vblank+0x154/0x160 [drm]
Mär 27 08:30:08 teefax kernel:  [<f87fa6d2>] intel_enable_tv+0x22/0x60 [i915]
Mär 27 08:30:08 teefax kernel:  [<f87c7e6d>] i9xx_crtc_enable+0x35d/0x420 [i915]
Mär 27 08:30:08 teefax kernel:  [<f87c6775>] __intel_set_mode+0x8d5/0xab0 [i915]
Mär 27 08:30:08 teefax kernel:  [<f87cbcb6>] intel_set_mode+0x76/0xb0 [i915]
Mär 27 08:30:08 teefax kernel:  [<f87cbeed>] intel_get_load_detect_pipe+0x1fd/0x4a0 [i915]
Mär 27 08:30:08 teefax kernel:  [<f87fb236>] intel_tv_detect+0x106/0x5d0 [i915]
Mär 27 08:30:08 teefax kernel:  [<c1090001>] ? irq_create_mapping+0x1d1/0x220
Mär 27 08:30:08 teefax kernel:  [<f85a27f8>] drm_helper_probe_single_connector_modes_merge_bits+0x2c8/0x410 [drm_kms_helper]
Mär 27 08:30:08 teefax kernel:  [<f85a2957>] drm_helper_probe_single_connector_modes+0x17/0x20 [drm_kms_helper]
Mär 27 08:30:08 teefax kernel:  [<f85aba11>] drm_fb_helper_probe_connector_modes.isra.3+0x41/0x60 [drm_kms_helper]
Mär 27 08:30:08 teefax kernel:  [<f85acab8>] drm_fb_helper_initial_config+0x48/0x590 [drm_kms_helper]
Mär 27 08:30:08 teefax kernel:  [<c1073aa2>] ? finish_task_switch+0x42/0xd0
Mär 27 08:30:08 teefax kernel:  [<c1476135>] ? schedule+0x905/0x1040
Mär 27 08:30:08 teefax kernel:  [<f87da069>] intel_fbdev_initial_config+0x19/0x20 [i915]
Mär 27 08:30:08 teefax kernel:  [<c106f2ae>] async_run_entry_fn+0x4e/0x170
Mär 27 08:30:08 teefax kernel:  [<c1067ee0>] ? pwq_dec_nr_in_flight+0x40/0x90
Mär 27 08:30:08 teefax kernel:  [<c1068463>] process_one_work+0x113/0x370
Mär 27 08:30:08 teefax kernel:  [<c1099c5d>] ? try_to_del_timer_sync+0x4d/0x80
Mär 27 08:30:08 teefax kernel:  [<c10689d9>] worker_thread+0x39/0x420
Mär 27 08:30:08 teefax kernel:  [<c10689a0>] ? init_pwq.part.31+0x10/0x10
Mär 27 08:30:08 teefax kernel:  [<c106cc36>] kthread+0xa6/0xc0
Mär 27 08:30:08 teefax kernel:  [<c1479cc1>] ret_from_kernel_thread+0x21/0x30
Mär 27 08:30:08 teefax kernel:  [<c106cb90>] ? kthread_create_on_node+0x130/0x130
Mär 27 08:30:08 teefax kernel: ---[ end trace 1814e8df15ec21a8 ]---
Mär 27 08:30:08 teefax kernel: i915 0000:00:02.0: No connectors reported connected with modes
Mär 27 08:30:08 teefax kernel: [drm] Cannot find any crtc or sizes - going 1024x768
Mär 27 08:30:08 teefax kernel: fbcon: inteldrmfb (fb0) is primary device
Mär 27 08:30:08 teefax kernel: Console: switching to colour frame buffer device 128x48
Mär 27 08:30:08 teefax kernel: i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
Mär 27 08:30:08 teefax kernel: i915 0000:00:02.0: registered panic notifier