same here
Linux sugar 3.16.0-24-generic #32-Ubuntu SMP Tue Oct 28 13:07:32 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux                                                                                                             

Dec  9 23:37:03 sugar kernel: [ 2059.554998] ------------[ cut here ]------------
Dec  9 23:37:03 sugar kernel: [ 2059.555043] WARNING: CPU: 3 PID: 1494 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]()
Dec  9 23:37:03 sugar kernel: [ 2059.555045] Modules linked in: md4 nls_utf8 cifs fscache ctr ccm bbswitch(OE) pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep binfmt_misc snd_hda_codec_h
dmi uvcvideo videobuf2_vmalloc videobuf2_memops hid_generic videobuf2_core v4l2_common usbhid videodev hid media ath3k btusb bluetooth 6lowpan_iphc acer_wmi sparse_keymap intel_rapl x86_pkg_temp_thermal intel_powe
rclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel arc4 aesni_intel aes_x86_64 lrw ath9k gf128mul glue_helper ablk_helper ath9k_common cryptd ath9k_hw ath mac80211 joydev serio_raw rts
x_pci_ms memstick snd_hda_codec_realtek lpc_ich snd_hda_codec_generic cfg80211 i915 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep drm_kms_helper snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_s
eq parport_pc wmi video snd_seq_device drm snd_timer ppdev snd mei_me i2c_algo_bit lp parport intel_smartconnect soc_button_array mac_hid mei shpchp soundcore rtsx_pci_sdmmc psmouse ahci libahci r8169 rtsx_pci mii
Dec  9 23:37:03 sugar kernel: [ 2059.555106] CPU: 3 PID: 1494 Comm: Xorg Tainted: G          IOE 3.16.0-24-generic #32-Ubuntu
Dec  9 23:37:03 sugar kernel: [ 2059.555108] Hardware name: Acer Aspire V5-573G/Dazzle_HW, BIOS V2.25 11/28/2013
Dec  9 23:37:03 sugar kernel: [ 2059.555110]  0000000000000009 ffff880340a03c18 ffffffff8177fcbc 0000000000000000
Dec  9 23:37:03 sugar kernel: [ 2059.555113]  ffff880340a03c50 ffffffff8106fd8d 0000000000000000 ffff88034c73b000
Dec  9 23:37:03 sugar kernel: [ 2059.555116]  ffff88034ade8210 ffff88034ac49800 ffff88034ac49800 ffff880340a03c60
Dec  9 23:37:03 sugar kernel: [ 2059.555120] Call Trace:
Dec  9 23:37:03 sugar kernel: [ 2059.555128]  [<ffffffff8177fcbc>] dump_stack+0x45/0x56
Dec  9 23:37:03 sugar kernel: [ 2059.555134]  [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0
Dec  9 23:37:03 sugar kernel: [ 2059.555138]  [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20
Dec  9 23:37:03 sugar kernel: [ 2059.555162]  [<ffffffffc052fffc>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
Dec  9 23:37:03 sugar kernel: [ 2059.555169]  [<ffffffff810b9590>] ? prepare_to_wait_event+0x100/0x100
Dec  9 23:37:03 sugar kernel: [ 2059.555189]  [<ffffffffc0532ac3>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
Dec  9 23:37:03 sugar kernel: [ 2059.555193]  [<ffffffff81784e5b>] ? __ww_mutex_lock+0x1b/0xb0
Dec  9 23:37:03 sugar kernel: [ 2059.555210]  [<ffffffffc0533a17>] haswell_crtc_disable+0x57/0x2e0 [i915]
Dec  9 23:37:03 sugar kernel: [ 2059.555213]  [<ffffffff81785ab2>] ? mutex_lock+0x12/0x30
Dec  9 23:37:03 sugar kernel: [ 2059.555230]  [<ffffffffc0534457>] intel_crtc_update_dpms+0x67/0xa0 [i915]
Dec  9 23:37:03 sugar kernel: [ 2059.555248]  [<ffffffffc0538ac9>] intel_connector_dpms+0x59/0x70 [i915]
Dec  9 23:37:03 sugar kernel: [ 2059.555266]  [<ffffffffc0408e19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
Dec  9 23:37:03 sugar kernel: [ 2059.555281]  [<ffffffffc0408e50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
Dec  9 23:37:03 sugar kernel: [ 2059.555291]  [<ffffffffc03f7a4f>] drm_ioctl+0x1df/0x680 [drm]
Dec  9 23:37:03 sugar kernel: [ 2059.555298]  [<ffffffff81414d4c>] ? backlight_generate_event+0x5c/0x80
Dec  9 23:37:03 sugar kernel: [ 2059.555300]  [<ffffffff8141559e>] ? brightness_store+0xce/0x100
Dec  9 23:37:03 sugar kernel: [ 2059.555305]  [<ffffffff8121f9bc>] ? fsnotify+0x27c/0x350
Dec  9 23:37:03 sugar kernel: [ 2059.555308]  [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0
Dec  9 23:37:03 sugar kernel: [ 2059.555311]  [<ffffffff811e31a1>] ? __sb_end_write+0x31/0x60
Dec  9 23:37:03 sugar kernel: [ 2059.555316]  [<ffffffff811e0d12>] ? vfs_write+0x1b2/0x1f0
Dec  9 23:37:03 sugar kernel: [ 2059.555318]  [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0
Dec  9 23:37:03 sugar kernel: [ 2059.555322]  [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f
Dec  9 23:37:03 sugar kernel: [ 2059.555324] ---[ end trace fa355f174d27385e ]---