Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 3 PID: 1121 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: binfmt_misc bnep fuse xt_CHECKSUM ipt_MASQUERADE tun nfnetlink_queue nfnetlink_log nfnetlink 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 vfat fat x86_pkg_temp_thermal coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel arc4 ath9k ghash_clmulni_intel ath9k_common uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev iTCO_wdt iTCO_vendor_support media snd_hda_codec_realtek snd_hda_codec_hdmi
 snd_hda_codec_generic snd_hda_intel snd_hda_controller ath9k_hw snd_hda_codec ath acer_wmi sparse_keymap mac80211 joydev snd_hwdep mei_me ath3k btusb cfg80211 bluetooth sdhci_pci snd_seq serio_raw lpc_ich mei snd_seq_device snd_pcm i2c_hid mfd_core snd_timer snd rfkill i2c_i801 i2c_designware_platform dw_dmac i2c_designware_core dw_dmac_core soundcore shpchp wmi i915 i2c_algo_bit drm_kms_helper drm tg3 ptp pps_core sdhci_acpi sdhci mmc_core video
CPU: 3 PID: 1121 Comm: Xorg.bin Not tainted 3.17.6-300.fc21.x86_64 #1
Hardware name: Acer Aspire E1-572/EA50_HW   , BIOS V2.14 01/15/2014
 0000000000000000 00000000eea402cf ffff880089d4ba20 ffffffff8173f8aa
 ffff880089d4ba68 ffff880089d4ba58 ffffffff810970bd 0000000000000000
 ffff880098375000 ffff88003fb62800 ffff880157090000 0000000000000000
Call Trace:
 [<ffffffff8173f8aa>] dump_stack+0x45/0x56
 [<ffffffff810970bd>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8109713c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffa014bfab>] assert_plane.constprop.78+0x6b/0x70 [i915]
 [<ffffffffa0151311>] hsw_disable_ips+0x41/0x190 [i915]
 [<ffffffffa0157c09>] intel_crtc_disable_planes+0x49/0x160 [i915]
 [<ffffffffa0158b27>] haswell_crtc_disable+0x57/0x340 [i915]
 [<ffffffffa0152298>] __intel_set_mode+0x2c8/0x16f0 [i915]
 [<ffffffffa015b0f6>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa015c24a>] intel_crtc_set_config+0xa9a/0xeb0 [i915]
 [<ffffffffa008fa34>] drm_mode_set_config_internal+0x64/0xe0 [drm]
 [<ffffffffa009414b>] drm_mode_setcrtc+0x2ab/0x5b0 [drm]
 [<ffffffffa0085e6f>] drm_ioctl+0x1df/0x680 [drm]
 [<ffffffff81220910>] do_vfs_ioctl+0x2d0/0x4b0
 [<ffffffff81220b71>] SyS_ioctl+0x81/0xa0
 [<ffffffff81135d96>] ? __audit_syscall_exit+0x1f6/0x2a0
 [<ffffffff81746a69>] system_call_fastpath+0x16/0x1b