Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 0 PID: 1154 at drivers/gpu/drm/i915/intel_display.c:3361 intel_crtc_wait_for_pending_flips+0x1a5/0x1b0 [i915]()
Modules linked in: rfcomm rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache fuse ipt_MASQUERADE xt_CHECKSUM tun ccm radeon ttm ip6t_rpfilter ip6t_REJECT xt_conntrack bnep 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 btrfs xor raid6_pq btusb bluetooth arc4 iwldvm mac80211 x86_pkg_temp_thermal coretemp kvm_intel kvm snd_hda_codec_hdmi rtsx_pci_sdmmc rtsx_pci_ms mmc_core memstick iTCO_wdt hp_wmi iTCO_vendor_support sparse_keymap uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media iwlwifi
snd_hda_codec_idt snd_hda_codec_generic cfg80211 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq r8169 rfkill rtsx_pci mii snd_seq_device snd_pcm microcode mei_me mei joydev snd_timer snd serio_raw lpc_ich i2c_i801 soundcore mfd_core shpchp hp_accel lis3lv02d input_polldev wmi nfsd auth_rpcgss nfs_acl lockd sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit ghash_clmulni_intel drm_kms_helper drm video
CPU: 0 PID: 1154 Comm: Xorg Not tainted 3.17.7-200.fc20.x86_64 #1
Hardware name: Hewlett-Packard HP Pavilion dv6 Notebook PC/3388, BIOS F.1A 07/20/2011
0000000000000000 00000000da4af2fa ffff8802530e3908 ffffffff8172758c
0000000000000000 ffff8802530e3940 ffffffff81092e7d 0000000000000000
ffff880253c84000 ffff8802509682c0 ffff88025169a000 ffff88025169a360
Call Trace:
[<ffffffff8172758c>] dump_stack+0x45/0x56
[<ffffffff81092e7d>] warn_slowpath_common+0x7d/0xa0
[<ffffffff81092faa>] warn_slowpath_null+0x1a/0x20
[<ffffffffa01197b5>] intel_crtc_wait_for_pending_flips+0x1a5/0x1b0 [i915]
[<ffffffff810d1840>] ? prepare_to_wait_event+0xf0/0xf0
[<ffffffffa01250a8>] intel_crtc_set_config+0x9a8/0xe60 [i915]
[<ffffffffa001d584>] drm_mode_set_config_internal+0x64/0xf0 [drm]
[<ffffffffa0076c13>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
[<ffffffffa0076c63>] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper]
[<ffffffffa0078878>] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper]
[<ffffffffa012fdaa>] intel_fbdev_set_par+0x1a/0x60 [i915]
[<ffffffff813e0886>] ? fb_set_var+0x206/0x440
[<ffffffff813e0817>] fb_set_var+0x197/0x440
[<ffffffff810c8c17>] ? enqueue_entity+0x237/0x8c0
[<ffffffff810c7c8a>] ? check_preempt_wakeup+0x12a/0x220
[<ffffffff810c6ba7>] ? update_curr+0x67/0x160
[<ffffffff813d71b1>] fbcon_blank+0x1f1/0x2f0
[<ffffffff81457ec8>] do_unblank_screen+0xb8/0x1f0
[<ffffffff8144dd3a>] complete_change_console+0x5a/0xe0
[<ffffffff8144ed95>] vt_ioctl+0xfd5/0x1190
[<ffffffffa0013cac>] ? drm_ioctl+0x8c/0x660 [drm]
[<ffffffff81442939>] tty_ioctl+0x289/0xb70
[<ffffffff8123e8a8>] ? fsnotify+0x238/0x310
[<ffffffff81213500>] do_vfs_ioctl+0x2e0/0x4a0
[<ffffffff81213741>] SyS_ioctl+0x81/0xa0
[<ffffffff8112f426>] ? __audit_syscall_exit+0x1f6/0x2a0
[<ffffffff8172ec69>] system_call_fastpath+0x16/0x1b