Description of problem:
browsing using firefox then GUI freeze

Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 0 PID: 11476 at drivers/gpu/drm/drm_irq.c:1130 drm_wait_one_vblank+0x1aa/0x1b0 [drm]()
vblank wait timed out on crtc 0
Modules linked in: tcp_lp fuse bnep bluetooth ip6t_rpfilter cfg80211 rfkill 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 it87 hwmon_vid hp_accel lis3lv02d input_polldev snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm uvcvideo videobuf2_vmalloc videobuf2_core ppdev videobuf2_memops v4l2_common gpio_ich videodev iTCO_wdt iTCO_vendor_support media coretemp kvm_intel kvm serio_raw parport_pc lpc_ich
mfd_core r8169 parport i2c_i801 mii shpchp acpi_cpufreq snd_timer snd soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt i915 i2c_algo_bit video drm_kms_helper drm ata_generic pata_acpi
CPU: 0 PID: 11476 Comm: Xorg Not tainted 3.19.3-100.fc20.x86_64 #1
Hardware name: Gigabyte Technology Co., Ltd. G41MT-ES2L/G41MT-ES2L, BIOS F5 05/28/2010
0000000000000000 00000000f71fb001 ffff88005f273758 ffffffff8175affa
0000000000000000 ffff88005f2737b0 ffff88005f273798 ffffffff8109ad5a
ffff880036c88000 0000000000000000 ffff880036eec000 0000000000000000
Call Trace:
[<ffffffff8175affa>] dump_stack+0x45/0x57
[<ffffffff8109ad5a>] warn_slowpath_common+0x8a/0xc0
[<ffffffff8109ade5>] warn_slowpath_fmt+0x55/0x70
[<ffffffff810feb40>] ? internal_add_timer+0xb0/0xb0
[<ffffffff810dbc36>] ? finish_wait+0x56/0x70
[<ffffffffa002789a>] drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[<ffffffff810dbea0>] ? prepare_to_wait_event+0xf0/0xf0
[<ffffffffa0104980>] intel_pipe_set_base+0x140/0x230 [i915]
[<ffffffffa0110635>] intel_crtc_set_config+0xbc5/0xfb0 [i915]
[<ffffffffa00308ef>] drm_mode_set_config_internal+0x6f/0x110 [drm]
[<ffffffffa0090888>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
[<ffffffffa00927a9>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
[<ffffffffa0092822>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
[<ffffffffa011dd0a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[<ffffffff813fdec6>] ? fb_set_var+0x206/0x440
[<ffffffff813fde57>] fb_set_var+0x197/0x440
[<ffffffff810d1f7a>] ? check_preempt_wakeup+0x12a/0x220
[<ffffffff810d0e57>] ? update_curr+0x67/0x160
[<ffffffff813f4624>] fbcon_blank+0x1f4/0x2f0
[<ffffffff810c3ddd>] ? ttwu_do_activate.constprop.90+0x5d/0x70
[<ffffffff81477d38>] do_unblank_screen+0xb8/0x1f0
[<ffffffff8146d91e>] complete_change_console+0x5e/0xf0
[<ffffffff8146e985>] vt_ioctl+0xfd5/0x1190
[<ffffffffa002a117>] ? drm_dropmaster_ioctl+0x77/0xa0 [drm]
[<ffffffff81461388>] tty_ioctl+0x208/0xc50
[<ffffffff81062d22>] ? __do_page_fault+0x202/0x5a0
[<ffffffff81225448>] do_vfs_ioctl+0x2f8/0x4f0
[<ffffffff81214001>] ? kill_litter_super+0x21/0x40
[<ffffffff812256c1>] SyS_ioctl+0x81/0xa0
[<ffffffff81762389>] system_call_fastpath+0x12/0x17