Linux 3.16.0-25-generic #33-Ubuntu SMP Tue Nov 4 12:06:54 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

[ 6125.090103] WARNING: CPU: 2 PID: 1499 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]()
[ 6125.090105] Modules linked in: uas usb_storage nf_conntrack_netlink nf_conntrack nfnetlink iptable_filter ip_tables x_tables rfcomm bnep bluetooth 6lowpan_iphc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic hid_generic eeepc_wmi asus_wmi sparse_keymap usbhid hid intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw snd_hda_intel gf128mul snd_hda_controller glue_helper ablk_helper cryptd snd_hda_codec snd_hwdep snd_pcm serio_raw snd_seq_midi snd_seq_midi_event i915 snd_rawmidi snd_seq snd_seq_device snd_timer video drm_kms_helper snd mac_hid parport_pc drm lpc_ich ppdev wmi mei_me mei soundcore shpchp i2c_algo_bit intel_smartconnect aoe lp
[ 6125.090156]  parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq r8169 raid1 ahci libahci mii raid0 multipath linear
[ 6125.090172] CPU: 2 PID: 1499 Comm: Xorg Not tainted 3.16.0-25-generic #33-Ubuntu
[ 6125.090174] Hardware name: System manufacturer System Product Name/P8Z77-V LX, BIOS 2501 07/21/2014
[ 6125.090177]  0000000000000009 ffff8801186c7bf8 ffffffff8178015c 0000000000000000
[ 6125.090180]  ffff8801186c7c30 ffffffff8106fd7d 0000000000000000 ffff88011983e000
[ 6125.090183]  ffff8800b6558210 ffff880036714800 ffff880036714800 ffff8801186c7c40
[ 6125.090187] Call Trace:
[ 6125.090195]  [<ffffffff8178015c>] dump_stack+0x45/0x56
[ 6125.090201]  [<ffffffff8106fd7d>] warn_slowpath_common+0x7d/0xa0
[ 6125.090204]  [<ffffffff8106fe5a>] warn_slowpath_null+0x1a/0x20
[ 6125.090225]  [<ffffffffc02ec04c>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
[ 6125.090231]  [<ffffffff810b9580>] ? prepare_to_wait_event+0x100/0x100
[ 6125.090250]  [<ffffffffc02eeb13>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
[ 6125.090268]  [<ffffffffc02ef0e0>] ironlake_crtc_disable+0x50/0x980 [i915]
[ 6125.090287]  [<ffffffffc0204f53>] ? drm_modeset_lock+0x33/0xf0 [drm]
[ 6125.090291]  [<ffffffff81785f42>] ? mutex_lock+0x12/0x30
[ 6125.090310]  [<ffffffffc02f04a7>] intel_crtc_update_dpms+0x67/0xa0 [i915]
[ 6125.090330]  [<ffffffffc02f4b19>] intel_connector_dpms+0x59/0x70 [i915]
[ 6125.090345]  [<ffffffffc01fbe19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
[ 6125.090359]  [<ffffffffc01fbe50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
[ 6125.090370]  [<ffffffffc01eaa4f>] drm_ioctl+0x1df/0x680 [drm]
[ 6125.090376]  [<ffffffff8121fa3c>] ? fsnotify+0x27c/0x350
[ 6125.090380]  [<ffffffff8121fa3c>] ? fsnotify+0x27c/0x350
[ 6125.090384]  [<ffffffff811f4c28>] do_vfs_ioctl+0x2c8/0x4a0
[ 6125.090387]  [<ffffffff811e3201>] ? __sb_end_write+0x31/0x60
[ 6125.090391]  [<ffffffff811e0d72>] ? vfs_write+0x1b2/0x1f0
[ 6125.090395]  [<ffffffff811f4e81>] SyS_ioctl+0x81/0xa0
[ 6125.090399]  [<ffffffff817881ad>] system_call_fastpath+0x1a/0x1f
[ 6125.090401] ---[ end trace a97300c7887498e8 ]---