Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 2 PID: 1182 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: 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 x86_pkg_temp_thermal iwlmvm mac80211 snd_usb_audio snd_usbmidi_lib iTCO_wdt snd_rawmidi iTCO_vendor_support coretemp kvm snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_controller snd_hda_codec iwlwifi thinkpad_acpi snd_hwdep serio_raw cfg80211 snd_seq snd_seq_device snd_pcm wmi rfkill snd_timer
 snd mei_me i2c_i801 lpc_ich soundcore mfd_core mei shpchp dm_crypt ax88179_178a usbnet btrfs xor radeon i915 raid6_pq crct10dif_pclmul i2c_algo_bit crc32_pclmul crc32c_intel drm_kms_helper ttm drm ghash_clmulni_intel r8169 mii video
CPU: 2 PID: 1182 Comm: Xorg.bin Not tainted 3.17.2-300.fc21.x86_64 #1
Hardware name: LENOVO 20B3CTO1WW/20B3CTO1WW, BIOS GPET58WW (1.58 ) 06/16/2014
 0000000000000000 00000000d1b8fea5 ffff8800ad5b7848 ffffffff8173db01
 ffff8800ad5b7890 ffff8800ad5b7880 ffffffff81096e8d 0000000000000000
 ffff88022310b000 ffff88003659c000 ffff880220470000 0000000000000000
Call Trace:
 [<ffffffff8173db01>] dump_stack+0x45/0x56
 [<ffffffff81096e8d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff81096f0c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa018bf5b>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa01912c1>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa0197bb9>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa0198ad7>] haswell_crtc_disable+0x57/0x340 [i915]
 [<ffffffffa0192761>] __intel_set_mode+0x7e1/0x16f0 [i915]
 [<ffffffffa019b086>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa019c1da>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa0047a34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa012a153>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
 [<ffffffffa012a1a3>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
 [<ffffffffa01a80ce>] intel_fbdev_restore_mode+0x1e/0x50 [i915]
 [<ffffffffa01ce4ed>] i915_driver_lastclose+0x3d/0x50 [i915]
 [<ffffffffa003c064>] drm_lastclose+0x34/0x1a0 [drm]
 [<ffffffffa003c488>] drm_release+0x2b8/0x490 [drm]
 [<ffffffff8120db8c>] __fput+0xdc/0x1f0
 [<ffffffff8120dcee>] ____fput+0xe/0x10
 [<ffffffff810b3744>] task_work_run+0xd4/0xf0
 [<ffffffff81099682>] do_exit+0x392/0xaa0
 [<ffffffff81099e13>] do_group_exit+0x43/0xc0
 [<ffffffff810a5895>] get_signal+0x2a5/0x6b0
 [<ffffffff810135d7>] do_signal+0x37/0x6f0
 [<ffffffff810a2597>] ? recalc_sigpending+0x17/0x60
 [<ffffffff810a30e1>] ? __set_task_blocked+0x41/0xa0
 [<ffffffff81013cf9>] do_notify_resume+0x69/0xb0
 [<ffffffff817458df>] retint_signal+0x48/0x89