Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/i915/intel_display.c:9916 intel_check_page_flip+0xa7/0xb0 [i915]()
Kicking stuck page flip: queued at 688523, now 688524
Modules linked in: bnep bluetooth rfkill fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 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 snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt gspca_zc3xx gspca_main videodev media snd_hda_intel snd_hda_controller snd_hda_codec coretemp snd_hwdep gpio_ich iTCO_vendor_support snd_seq snd_seq_device snd_pcm ppdev snd_timer
 snd soundcore i2c_i801 serio_raw tpm_tis lpc_ich mfd_core tpm parport_pc mei_me parport mei acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc hid_logitech_dj ata_generic pata_acpi e1000e i915 uas firewire_ohci usb_storage firewire_core i2c_algo_bit video crc_itu_t drm_kms_helper ptp drm pata_marvell pps_core
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.2-200.fc21.i686+PAE #1
Hardware name:                  /DQ35JO, BIOS JOQ3510J.86A.1143.2010.1209.0048 12/09/2010
 00000000 89f66442 00000000 f2c0be9c c0a68c8d f2c0bee0 f2c0bed0 c0464332
 f80ac75c f2c0bf00 00000000 f80aa354 000026bc f8060187 000026bc f8060187
 f27df400 f27df4fc f2609000 f2c0beec c046438e 00000009 f2c0bee0 f80ac75c
Call Trace:
 [<c0a68c8d>] dump_stack+0x41/0x52
 [<c0464332>] warn_slowpath_common+0x82/0xa0
 [<f8060187>] ? intel_check_page_flip+0xa7/0xb0 [i915]

Potential duplicate: bug 1046975