Description of problem:
immediately after system boot.  I did nothing.

Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 2 PID: 1298 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: uas usb_storage usblp rfcomm fuse 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 x86_pkg_temp_thermal coretemp iwlmvm mac80211 kvm iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek uvcvideo snd_hda_codec_generic snd_hda_codec_hdmi snd_usb_audio iwlwifi snd_hda_intel videobuf2_vmalloc videobuf2_memops videobuf2_core snd_usbmidi_lib v4l2_common snd_rawmidi serio_raw videodev snd_hda_controller i2c_i801
 snd_hda_codec media cfg80211 snd_hwdep snd_seq cdc_ether usbnet mii snd_seq_device btusb snd_pcm joydev bluetooth lpc_ich mfd_core mei_me mei snd_timer shpchp thinkpad_acpi wmi snd i2c_designware_platform soundcore i2c_designware_core tpm_tis rfkill tpm binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul i2c_algo_bit crc32c_intel drm_kms_helper drm e1000e ghash_clmulni_intel ptp pps_core video
CPU: 2 PID: 1298 Comm: Xorg.bin Not tainted 3.17.7-300.fc21.x86_64 #1
Hardware name: LENOVO 20A8S1BC00/20A8S1BC00, BIOS GRET39WW (1.16 ) 06/06/2014
 0000000000000000 000000005315a08c ffff880208733760 ffffffff817401ea
 ffff8802087337a8 ffff880208733798 ffffffff810970bd 0000000000000000
 ffff880212ee1000 ffff880210520800 ffff8800362f0000 0000000000000000
Call Trace:
 [<ffffffff817401ea>] dump_stack+0x45/0x56
 [<ffffffff810970bd>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8109713c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa0150fab>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa0156311>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa015cc09>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa015db17>] haswell_crtc_disable+0x57/0x330 [i915]
 [<ffffffffa01577b1>] __intel_set_mode+0x7e1/0x16f0 [i915]
 [<ffffffff811ec398>] ? get_partial_node.isra.47+0x118/0x290
 [<ffffffffa01600d6>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa016122a>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa008ca34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa00e7153>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
 [<ffffffffa00e71a3>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
 [<ffffffffa00e8ca8>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
 [<ffffffffa016bdaa>] intel_fbdev_set_par+0x1a/0x60 [i915]
 [<ffffffff813f4aa0>] fb_set_var+0x190/0x420
 [<ffffffff8119c556>] ? free_hot_cold_page_list+0x46/0xa0
 [<ffffffff813eb0c9>] fbcon_blank+0x259/0x340
 [<ffffffff8146c9da>] do_unblank_screen+0xba/0x1f0
 [<ffffffff81463a41>] vt_ioctl+0x13b1/0x1430
 [<ffffffff81310d57>] ? avc_alloc_node+0x27/0x130
 [<ffffffff8145716d>] tty_ioctl+0x2ad/0xbf0
 [<ffffffff81311519>] ? avc_has_perm+0xd9/0x1a0
 [<ffffffff81220ff0>] do_vfs_ioctl+0x2d0/0x4b0
 [<ffffffff8120ea8e>] ? ____fput+0xe/0x10
 [<ffffffff81221251>] SyS_ioctl+0x81/0xa0
 [<ffffffff817473a9>] system_call_fastpath+0x16/0x1b