[   77.780232] ------------[ cut here ]------------
[   77.780263] WARNING: CPU: 0 PID: 3115 at drivers/gpu/drm/i915/intel_display.c:1843 intel_enable_primary_plane+0x49/0xb7 [i915]()
[   77.780266] Primary plane already enabled
[   77.780268] Modules linked in: ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables bnep bluetooth rfkill snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm pcspkr snd_page_alloc snd_timer snd soundcore battery acpi_cpufreq ac freq_table uinput ipv6 i915 drm_kms_helper drm video button
[   77.780298] CPU: 0 PID: 3115 Comm: X Not tainted 3.12.0-rc4_unstable_20131010+ #1
[   77.780301] Hardware name: Intel Corp. VALLEYVIEW B3 PLATFORM/NOTEBOOK, BIOS BBAYCRB1.X64.0063.D20.1310011632 BBAY_X64_D_V63_20 10/01/2013
[   77.780304]  0000000000000000 ffffffffa00cab6e ffffffff81708d3c ffff880077bd1a88
[   77.780309]  ffffffff8103329c 00000000fffc9bf3 ffffffffa00822c6 ffffffff81c52080
[   77.780313]  ffff88003faac000 0000000000000001 0000000000000001 ffff88003f893000
[   77.780317] Call Trace:
[   77.780327]  [<ffffffff81708d3c>] ? dump_stack+0x41/0x51
[   77.780334]  [<ffffffff8103329c>] ? warn_slowpath_common+0x74/0x8d
[   77.780351]  [<ffffffffa00822c6>] ? intel_enable_primary_plane+0x49/0xb7 [i915]
[   77.780356]  [<ffffffff8103334d>] ? warn_slowpath_fmt+0x45/0x4a
[   77.780373]  [<ffffffffa0081d01>] ? assert_pipe+0x64/0xba [i915]
[   77.780390]  [<ffffffffa00822c6>] ? intel_enable_primary_plane+0x49/0xb7 [i915]
[   77.780406]  [<ffffffffa0086228>] ? valleyview_crtc_enable+0x2fb/0x381 [i915]
[   77.780423]  [<ffffffffa00889a6>] ? __intel_set_mode+0x101d/0x10e1 [i915]
[   77.780431]  [<ffffffff812d2744>] ? snprintf+0x39/0x3e
[   77.780448]  [<ffffffffa008a2e4>] ? intel_set_mode+0xd/0x27 [i915]
[   77.780465]  [<ffffffffa008a978>] ? intel_crtc_set_config+0x67a/0x7d8 [i915]
[   77.780478]  [<ffffffffa001a40a>] ? drm_mode_set_config_internal+0x44/0xae [drm]
[   77.780489]  [<ffffffffa001bf65>] ? drm_mode_setcrtc+0x3f6/0x448 [drm]
[   77.780499]  [<ffffffffa0010015>] ? drm_ioctl+0x2ad/0x3b1 [drm]
[   77.780505]  [<ffffffff8117674c>] ? ext4_file_write+0x2ef/0x34b
[   77.780516]  [<ffffffffa001bb6f>] ? drm_mode_setplane+0x334/0x334 [drm]
[   77.780522]  [<ffffffff810e967d>] ? do_vfs_ioctl+0x3f5/0x436
[   77.780527]  [<ffffffff810dcb9c>] ? __sb_end_write+0x25/0x53
[   77.780531]  [<ffffffff810e9713>] ? SyS_ioctl+0x55/0x7a
[   77.780536]  [<ffffffff81713622>] ? system_call_fastpath+0x16/0x1b
[   77.780539] ---[ end trace f8feca3e18ca97c2 ]---