Description of problem:
Unplugged monitor from the displayport

Additional info:
reporter:       libreport-2.1.12
WARNING: CPU: 2 PID: 3165 at drivers/gpu/drm/i915/intel_display.c:844 intel_wait_for_pipe_off+0x108/0x1e0 [i915]()
pipe_off wait timed out
Modules linked in: nf_nat_h323 nf_conntrack_h323 nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_sip nf_conntrack_sip nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp tcp_lp rndis_host cdc_ether usbnet mii ipt_MASQUERADE rfcomm xt_CHECKSUM tun fuse 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 snd_hda_codec_hdmi snd_hda_codec_conexant iTCO_wdt arc4 iTCO_vendor_support coretemp kvm_intel iwldvm mxm_wmi mac80211 kvm uvcvideo snd_hda_intel snd_hda_codec videobuf2_vmalloc videobuf2_memops snd_hwdep videobuf2_core joydev snd_seq microcode videodev snd_seq_device media serio_raw iwlwifi lpc_ich intel_ips snd_pcm e1000e btusb i2c_i801 sdhci_pci mfd_core cfg80211 bluetooth sdhci mmc_core ptp mei_me snd_page_alloc thinkpad_acpi mei snd_timer pps_core shpchp snd soundcore rfkill wmi acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd binfmt_misc sunrpc dm_crypt btrfs libcrc32c xor raid6_pq crct10dif_pclmul crc32_pclmul crc32c_intel i915 usb_storage ghash_clmulni_intel i2c_algo_bit drm_kms_helper firewire_ohci drm firewire_core crc_itu_t i2c_core video loop
CPU: 2 PID: 3165 Comm: Xorg Not tainted 3.12.9-301.fc20.x86_64 #1
Hardware name: LENOVO 2522BQ9/2522BQ9, BIOS 6IET85WW (1.45 ) 02/14/2013
 0000000000000009 ffff8800b1131bb8 ffffffff81667af7 ffff8800b1131c00
 ffff8800b1131bf0 ffffffff8106918d 0000000000070008 ffff88022d66c000
 0000000102412161 ffff8800b1131fd8 ffff88022daafc18 ffff8800b1131c50
Call Trace:
 [<ffffffff81667af7>] dump_stack+0x45/0x56
 [<ffffffff8106918d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff810691fc>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffffa0105098>] intel_wait_for_pipe_off+0x108/0x1e0 [i915]
 [<ffffffffa0105202>] intel_disable_pipe+0x92/0xa0 [i915]
 [<ffffffffa0107f46>] ironlake_crtc_disable+0xd6/0x950 [i915]
 [<ffffffffa010c37f>] intel_crtc_update_dpms+0x6f/0xa0 [i915]
 [<ffffffffa010fcc9>] intel_connector_dpms+0x59/0x70 [i915]
 [<ffffffffa004f778>] drm_mode_obj_set_property_ioctl+0x308/0x320 [drm]
 [<ffffffffa004f7c0>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
 [<ffffffffa003ec32>] drm_ioctl+0x502/0x630 [drm]
 [<ffffffff811cc9ee>] ? mntput_no_expire+0x3e/0x120
 [<ffffffff811c111d>] do_vfs_ioctl+0x2dd/0x4b0
 [<ffffffff811b055e>] ? ____fput+0xe/0x10
 [<ffffffff81087cbc>] ? task_work_run+0xac/0xe0
 [<ffffffff811c1371>] SyS_ioctl+0x81/0xa0
 [<ffffffff81676aa9>] system_call_fastpath+0x16/0x1b