Description of problem:
This happened after my laptop got out of suspend mode.

Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 988 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: pn544_mei mei_phy pn544 hci nfc fuse xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat bridge stp llc snd_usb_audio snd_usbmidi_lib snd_rawmidi nf_log_ipv6 nf_log_ipv4 nf_log_common xt_pkttype xt_LOG xt_comment nf_conntrack_ipv6 nf_conntrack_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 xt_conntrack nf_conntrack ip6table_filter ip6_tables bnep arc4 vfat fat x86_pkg_temp_thermal iTCO_wdt iTCO_vendor_support coretemp kvm_intel iwlmvm dell_wmi sparse_keymap ppdev kvm mac80211 crct10dif_pclmul crc32_pclmul crc32c_intel iwlwifi ghash_clmulni_intel dell_laptop cfg80211 dcdbas uvcvideo btusb bluetooth videobuf2_vmalloc serio_raw videobuf2_memops videobuf2_core lpc_ich mfd_core v4l2_common i2c_i801 snd_hda_codec_realtek snd_hda_codec_generic videodev media rfkill
 qcserial sdhci_pci snd_hda_codec_hdmi usb_wwan snd_hda_intel shpchp snd_hda_controller snd_hda_codec mei_me mei snd_hwdep snd_seq wmi snd_seq_device snd_pcm parport_pc parport dw_dmac dw_dmac_core i2c_hid i2c_designware_platform i2c_designware_core snd_timer snd soundcore cdc_mbim cdc_wdm cdc_ncm usbnet mii hid_logitech_dj i915 i2c_algo_bit drm_kms_helper drm e1000e ptp pps_core sdhci_acpi sdhci mmc_core video
CPU: 0 PID: 988 Comm: Xorg.bin Not tainted 3.17.7-300.fc21.x86_64 #1
Hardware name: Dell Inc. Latitude E7240/05PTPV, BIOS A08 02/18/2014
 0000000000000000 00000000d6ecf2d9 ffff880200a938a8 ffffffff817401ea
 ffff880200a938f0 ffff880200a938e0 ffffffff810970bd 0000000000000000
 ffff8800d4c5d000 ffff88021005b800 ffff880210390000 0000000000000000
Call Trace:
 [<ffffffff817401ea>] dump_stack+0x45/0x56
 [<ffffffff810970bd>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8109713c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa0161fab>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa0167311>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa016dc09>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa0118e16>] ? intel_update_fbc+0x196/0x660 [i915]
 [<ffffffffa016eb17>] haswell_crtc_disable+0x57/0x330 [i915]
 [<ffffffffa01687b1>] __intel_set_mode+0x7e1/0x16f0 [i915]
 [<ffffffff8101f3d7>] ? __switch_to_xtra+0x167/0x1a0
 [<ffffffffa01710d6>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa017222a>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa00a5a34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa0100df5>] drm_fb_helper_pan_display+0x95/0xf0 [drm_kms_helper]
 [<ffffffff813f44fa>] fb_pan_display+0x9a/0x160
 [<ffffffff813ee5a0>] bit_update_start+0x20/0x50
 [<ffffffff813eca9e>] fbcon_switch+0x3ae/0x5e0
 [<ffffffff8146bea9>] redraw_screen+0x1a9/0x250
 [<ffffffff814625ef>] complete_change_console+0x3f/0xe0
 [<ffffffff8146382d>] vt_ioctl+0x119d/0x1430
 [<ffffffff8145716d>] tty_ioctl+0x2ad/0xbf0
 [<ffffffff811ed33e>] ? kfree+0x14e/0x160
 [<ffffffff81220ff0>] do_vfs_ioctl+0x2d0/0x4b0
 [<ffffffff81221251>] SyS_ioctl+0x81/0xa0
 [<ffffffff817473a9>] system_call_fastpath+0x16/0x1b