Dmsg.txt:
[ 676.628722] WARNING: CPU: 0 PID: 1267 at /build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_display.c:4195 intel_modeset_check_state+0x73c/0x750 [i915]()
[ 676.628726] wrong connector dpms state
[ 676.628728] Modules linked in: cuse snd_hda_codec_idt snd_hda_codec_hdmi hid_generic gpio_ich dell_wmi sparse_keymap bnep rfcomm dell_laptop dcdbas usbhid hid snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq_midi coretemp snd_seq_midi_event snd_rawmidi joydev serio_raw snd_seq r852 sm_common snd_seq_device nand snd_timer nand_ecc nand_bch btusb snd bluetooth bch r592 wl(POX) i915 lpc_ich nand_ids memstick drm_kms_helper drm mtd cfg80211 soundcore shpchp mac_hid i2c_algo_bit wmi parport_pc video ppdev lp parport sdhci_pci firewire_ohci psmouse ahci firewire_core libahci crc_itu_t pata_acpi sdhci sky2
[ 676.628809] CPU: 0 PID: 1267 Comm: Xorg Tainted: P W OX 3.13.0-49-generic #81-Ubuntu
[ 676.628813] Hardware name: Dell Inc. Inspiron 1525 / , BIOS A17 10/27/2009
[ 676.628816] 00000000 00000000 eb6b3b58 c1656658 eb6b3b98 eb6b3b88 c1056a7e f9b4ff36
[ 676.628827] eb6b3bb4 000004f3 f9b45b34 00001063 f9afdb6c f9afdb6c ec18ac00 ec189000
[ 676.628838] f68c9dc0 eb6b3ba0 c1056ad3 00000009 eb6b3b98 f9b4ff36 eb6b3bb4 eb6b3bf4
[ 676.628848] Call Trace:
[ 676.628859] [<c1656658>] dump_stack+0x41/0x52
[ 676.628867] [<c1056a7e>] warn_slowpath_common+0x7e/0xa0