Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 1 PID: 1392 at drivers/gpu/drm/i915/intel_display.c:1278 assert_plane.constprop.78+0x6b/0x70 [i915]()
plane A assertion failure (expected on, current off)
Modules linked in: fuse ccm xt_CHECKSUM ipt_MASQUERADE tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw arc4 binfmt_misc bnep iwlmvm mac80211 x86_pkg_temp_thermal coretemp kvm_intel iwlwifi kvm iTCO_wdt iTCO_vendor_support cfg80211 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi uvcvideo snd_hda_intel snd_hda_controller videobuf2_vmalloc videobuf2_memops snd_hda_codec videobuf2_core snd_hwdep btusb snd_seq serio_raw
 i2c_i801 lpc_ich bluetooth v4l2_common videodev snd_seq_device thinkpad_acpi media tpm_tis tpm snd_pcm rtsx_pci_ms rfkill memstick wmi mei_me snd_timer shpchp snd mei soundcore dm_crypt i915 rtsx_pci_sdmmc mmc_core crct10dif_pclmul i2c_algo_bit crc32_pclmul drm_kms_helper crc32c_intel drm e1000e ghash_clmulni_intel rtsx_pci ptp mfd_core pps_core video
CPU: 1 PID: 1392 Comm: Xorg.bin Not tainted 3.17.3-300.fc21.x86_64 #1
Hardware name: LENOVO 20ARS19C0B/20ARS19C0B, BIOS GJET79WW (2.29 ) 09/03/2014
 0000000000000000 00000000be230bbe ffff8802fa7d3760 ffffffff8173f509
 ffff8802fa7d37a8 ffff8802fa7d3798 ffffffff810970ad 0000000000000000
 ffff88030cd8a000 ffff88030cdf6800 ffff880309510000 0000000000000000
Call Trace:
 [<ffffffff8173f509>] dump_stack+0x45/0x56
 [<ffffffff810970ad>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8109712c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa0183fdb>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa0189341>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa018fc39>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa0190b57>] haswell_crtc_disable+0x57/0x340 [i915]
 [<ffffffffa018a7e1>] __intel_set_mode+0x7e1/0x16f0 [i915]
 [<ffffffff81387702>] ? radix_tree_lookup_slot+0x22/0x50
 [<ffffffffa0193106>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa019425a>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa00a0a34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa0102153>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
 [<ffffffffa01021a3>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
 [<ffffffffa0103ca8>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
 [<ffffffffa019edda>] intel_fbdev_set_par+0x1a/0x60 [i915]
 [<ffffffff813f3fb0>] fb_set_var+0x190/0x420
 [<ffffffff8119c3b6>] ? free_hot_cold_page_list+0x46/0xa0
 [<ffffffff813ea5d9>] fbcon_blank+0x259/0x340
 [<ffffffff8146beda>] do_unblank_screen+0xba/0x1f0
 [<ffffffff81462f41>] vt_ioctl+0x13b1/0x1430
 [<ffffffff81310327>] ? avc_alloc_node+0x27/0x130
 [<ffffffff8145666d>] tty_ioctl+0x2ad/0xbf0
 [<ffffffff81310ae9>] ? avc_has_perm+0xd9/0x1a0
 [<ffffffff81220630>] do_vfs_ioctl+0x2d0/0x4b0
 [<ffffffff8120e0ce>] ? ____fput+0xe/0x10
 [<ffffffff81220891>] SyS_ioctl+0x81/0xa0
 [<ffffffff817466a9>] system_call_fastpath+0x16/0x1b