Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 757 at drivers/gpu/drm/i915/intel_display.c:3361 intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]()
Modules linked in: fuse coretemp kvm_intel kvm snd_hda_codec_conexant snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec uvcvideo videobuf2_vmalloc snd_hwdep videobuf2_memops videobuf2_core iTCO_wdt iTCO_vendor_support v4l2_common videodev ppdev arc4 iwldvm mac80211 snd_seq snd_seq_device snd_pcm media joydev r592 memstick lpc_ich sdhci_pci serio_raw sdhci mmc_core i2c_i801 snd_timer mfd_core thinkpad_acpi iwlwifi parport_pc snd wmi parport soundcore cfg80211 mei_me mei rfkill tpm_tis tpm acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd sunrpc binfmt_misc radeon i915 ttm firewire_ohci e1000e yenta_socket firewire_core crc_itu_t ptp i2c_algo_bit drm_kms_helper pps_core drm video
CPU: 0 PID: 757 Comm: Xorg.bin Not tainted 3.17.7-300.fc21.i686+PAE #1
Hardware name: LENOVO 20828XG/20828XG, BIOS 7VET94WW (3.24 ) 12/13/2011
 00000000 4258039c 00000000 edec3cd8 c0a5d45f 00000000 edec3d0c c0463b22
 c0c19e18 00000000 000002f5 f875f8e8 00000d21 f870d71a 00000d21 f870d71a
 00000000 f6a84540 f176a000 edec3d1c c0463c12 00000009 00000000 edec3d4c
Call Trace:
 [<c0a5d45f>] dump_stack+0x41/0x52
 [<c0463b22>] warn_slowpath_common+0x82/0xa0
 [<f870d71a>] ? intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<f870d71a>] ? intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<c0463c12>] warn_slowpath_null+0x22/0x30
 [<f870d71a>] intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<c049c520>] ? abort_exclusive_wait+0x90/0x90
 [<f87145f3>] intel_crtc_disable_planes+0x33/0x130 [i915]
 [<f86c6a89>] ? intel_set_memory_cxsr+0x89/0x190 [i915]
 [<f871473c>] i9xx_crtc_disable+0x4c/0x570 [i915]
 [<f870ee99>] intel_crtc_control+0x49/0x110 [i915]
 [<f870efbc>] intel_crtc_update_dpms+0x5c/0x70 [i915]
 [<f8717589>] intel_connector_dpms+0x59/0x70 [i915]
 [<f829462a>] drm_mode_obj_set_property_ioctl+0x44a/0x470 [drm]
 [<c0487b21>] ? ttwu_do_activate.constprop.99+0x51/0x60
 [<f829468f>] drm_mode_connector_property_set_ioctl+0x3f/0x60 [drm]
 [<f8294650>] ? drm_mode_obj_set_property_ioctl+0x470/0x470 [drm]
 [<f8286555>] drm_ioctl+0x1f5/0x560 [drm]
 [<c0477617>] ? __queue_work+0xf7/0x2d0
 [<f8294650>] ? drm_mode_obj_set_property_ioctl+0x470/0x470 [drm]
 [<c0603909>] ? sysfs_notify+0x49/0x80
 [<c0751cb6>] ? backlight_generate_event+0x56/0x80
 [<c07523df>] ? brightness_store+0xbf/0x110
 [<f8286360>] ? drm_copy_field+0x70/0x70 [drm]
 [<c05ade22>] do_vfs_ioctl+0x302/0x4f0
 [<c059de11>] ? __sb_end_write+0x31/0x70
 [<c059c0f5>] ? vfs_write+0x165/0x1e0
 [<c05ae070>] SyS_ioctl+0x60/0x90
 [<c0a6359f>] sysenter_do_call+0x12/0x12