Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 1 PID: 23392 at drivers/gpu/drm/i915/intel_display.c:3313 intel_crtc_wait_for_pending_flips+0x198/0x1a0 [i915]()
Modules linked in: fuse dm_thin_pool dm_persistent_data dm_bio_prison libcrc32c loop bridge stp llc hp_accel lis3lv02d bnep input_polldev dm_crypt x86_pkg_temp_thermal uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev coretemp kvm_intel media btusb kvm bluetooth iTCO_wdt iTCO_vendor_support crct10dif_pclmul sdhci_pci sdhci crc32_pclmul arc4 snd_hda_codec_hdmi mmc_core snd_hda_codec_realtek snd_hda_codec_generic iwldvm snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq mac80211 iwlwifi crc32c_intel joydev lpc_ich mfd_core serio_raw thinkpad_acpi mei_me snd_seq_device snd_pcm snd_timer ghash_clmulni_intel microcode i2c_i801 cfg80211 shpchp mei wmi snd soundcore rfkill tpm_tis binfmt_misc i915 i2c_algo_bit e1000e drm_kms_helper drm ptp pps_core
i2c_core video ecryptfs encrypted_keys trusted tpm [last unloaded: iptable_raw]
CPU: 1 PID: 23392 Comm: Xorg Not tainted 3.16.2-201.fc20.x86_64 #1
Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET37WW (1.12 ) 05/29/2012
0000000000000000 00000000e34d3225 ffff88001a5bb950 ffffffff81706e31
0000000000000000 ffff88001a5bb988 ffffffff8108d0ad 0000000000000000
ffff880309f26000 ffff8803090c8210 ffff880036c84000 ffff880036c84368
Call Trace:
[<ffffffff81706e31>] dump_stack+0x45/0x56
[<ffffffff8108d0ad>] warn_slowpath_common+0x7d/0xa0
[<ffffffff8108d1da>] warn_slowpath_null+0x1a/0x20
[<ffffffffa0163db8>] intel_crtc_wait_for_pending_flips+0x198/0x1a0 [i915]
[<ffffffff810d4600>] ? abort_exclusive_wait+0xb0/0xb0
[<ffffffffa016d6f9>] intel_crtc_set_config+0x959/0xdb0 [i915]
[<ffffffffa00726a1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
[<ffffffffa00c5ca3>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
[<ffffffffa00c5cf3>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
[<ffffffffa00c7928>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
[<ffffffff813ce807>] fb_set_var+0x197/0x440
[<ffffffff811eaa41>] ? mem_cgroup_bad_page_check+0x21/0x30
[<ffffffff81184a7b>] ? free_pages_prepare+0xab/0x1b0
[<ffffffff81186136>] ? free_hot_cold_page_list+0x46/0xa0
[<ffffffff813c4f01>] fbcon_blank+0x1f1/0x2f0
[<ffffffff81445ba8>] do_unblank_screen+0xb8/0x1f0
[<ffffffff8143cbbe>] vt_ioctl+0x110e/0x1190
[<ffffffff814305a9>] tty_ioctl+0x289/0xb70
[<ffffffff8146928c>] ? vga_arb_release+0xcc/0x120
[<ffffffff8120a254>] ? dput+0x24/0x170
[<ffffffff81206820>] do_vfs_ioctl+0x2e0/0x4a0
[<ffffffff811f54fe>] ? ____fput+0xe/0x10
[<ffffffff810acfdc>] ? task_work_run+0xac/0xe0
[<ffffffff81206a61>] SyS_ioctl+0x81/0xa0
[<ffffffff8170e469>] system_call_fastpath+0x16/0x1b