Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 1 PID: 1793 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: vhost_net vhost macvtap macvlan tun rfcomm fuse xt_CHECKSUM ipt_MASQUERADE ccm 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 bnep arc4 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm iwlmvm mac80211 uvcvideo btusb snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic bluetooth videobuf2_vmalloc iwlwifi videobuf2_memops videobuf2_core serio_raw cfg80211 v4l2_common snd_hda_intel
 snd_hda_controller i2c_i801 snd_hda_codec lpc_ich rtsx_pci_ms memstick videodev snd_hwdep snd_seq media snd_seq_device thinkpad_acpi snd_pcm shpchp wmi tpm_tis tpm rfkill mei_me snd_timer mei snd soundcore nfsd auth_rpcgss nfs_acl lockd sunrpc dm_crypt i915 rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper e1000e ghash_clmulni_intel drm rtsx_pci mfd_core ptp pps_core video
CPU: 1 PID: 1793 Comm: Xorg.bin Not tainted 3.17.8-300.fc21.x86_64 #1
Hardware name: LENOVO 20ARS0LE00/20ARS0LE00, BIOS GJET75WW (2.25 ) 03/28/2014
 0000000000000000 000000007e3c1d0f ffff8802f9867760 ffffffff81741aea
 ffff8802f98677a8 ffff8802f9867798 ffffffff810970bd 0000000000000000
 ffff88030cd36000 ffff8800c8fd8000 ffff880309a80000 0000000000000000
Call Trace:
 [<ffffffff81741aea>] dump_stack+0x45/0x56
 [<ffffffff810970bd>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8109713c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa0182fab>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa0188311>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa018ec09>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa0139e16>] ? intel_update_fbc+0x196/0x660 [i915]
 [<ffffffffa018fb17>] haswell_crtc_disable+0x57/0x330 [i915]
 [<ffffffffa01897b1>] __intel_set_mode+0x7e1/0x16f0 [i915]
 [<ffffffff811ec568>] ? get_partial_node.isra.47+0x118/0x290
 [<ffffffffa01920d6>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa019322a>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa003ea34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa00e4153>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
 [<ffffffffa00e41a3>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
 [<ffffffffa00e5ca8>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
 [<ffffffffa019ddaa>] intel_fbdev_set_par+0x1a/0x60 [i915]
 [<ffffffff813f4e00>] fb_set_var+0x190/0x420
 [<ffffffff8119c726>] ? free_hot_cold_page_list+0x46/0xa0
 [<ffffffff813eb429>] fbcon_blank+0x259/0x340
 [<ffffffff8146cd3a>] do_unblank_screen+0xba/0x1f0
 [<ffffffff81463da1>] vt_ioctl+0x13b1/0x1430
 [<ffffffff813110c7>] ? avc_alloc_node+0x27/0x130
 [<ffffffff814574cd>] tty_ioctl+0x2ad/0xbf0
 [<ffffffff81311889>] ? avc_has_perm+0xd9/0x1a0
 [<ffffffff812211c0>] do_vfs_ioctl+0x2d0/0x4b0
 [<ffffffff8120ec5e>] ? ____fput+0xe/0x10
 [<ffffffff81221421>] SyS_ioctl+0x81/0xa0
 [<ffffffff81748ca9>] system_call_fastpath+0x16/0x1b