Linux xavier 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Ubuntu 16.04.1 LTS (Xenial Xerus). Using external monitor and laptop lip closed.

[52362.767655] WARNING: CPU: 0 PID: 2811 at /build/linux-dcxD3m/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:3968 intel_crtc_wait_for_pending_flips+0x233/0x240 [i915]()
[52362.767656] Removing stuck page flip
[52362.767657] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid hidp nvram rfcomm msr bnep btusb btrtl btbcm btintel bluetooth joydev input_leds bcm5974 binfmt_misc applesmc input_polldev nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul snd_hda_codec_hdmi aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd thunderbolt brcmfmac brcmutil cfg80211 lpc_ich intel_pch_thermal bdc_pci mei_me snd_hda_codec_cirrus snd_hda_codec_generic mei shpchp snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq sbs snd_seq_device sbshc snd_timer acpi_als kfifo_buf snd industrialio apple_bl soundcore spi_pxa2xx_platform mac_hid parport_pc ppdev lp parport autofs4 uas usb_storage hid_apple hid_generic i915 i2c_algo_bit ahci drm_kms_helper libahci usbhid syscopyarea sysfillrect hid sysimgblt fb_sys_fops drm fjes video
[52362.767706] CPU: 0 PID: 2811 Comm: Xorg Tainted: G        W       4.4.0-31-generic #50-Ubuntu
[52362.767707] Hardware name: Apple Inc. MacBookPro12,1/Mac-E43C1C25D4880AD6, BIOS MBP121.88Z.0167.B15.1510261437 10/26/2015
[52362.767708]  0000000000200086 000000005bb1e7d4 ffff88026295faa0 ffffffff813f1143
[52362.767711]  ffff88026295fae8 ffffffffc0213a70 ffff88026295fad8 ffffffff81081102
[52362.767714]  ffff8800358341a8 ffff88025ee19008 ffff880264827000 ffff880035834000
[52362.767717] Call Trace:
[52362.767720]  [<ffffffff813f1143>] dump_stack+0x63/0x90
[52362.767724]  [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0
[52362.767727]  [<ffffffff8108119c>] warn_slowpath_fmt+0x5c/0x80
[52362.767730]  [<ffffffff810c3805>] ? finish_wait+0x55/0x70
[52362.767756]  [<ffffffffc01ae1d3>] intel_crtc_wait_for_pending_flips+0x233/0x240 [i915]
[52362.767759]  [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60
[52362.767786]  [<ffffffffc01af401>] intel_pre_plane_update+0x111/0x140 [i915]
[52362.767811]  [<ffffffffc01afbd2>] intel_atomic_commit+0x352/0x6f0 [i915]
[52362.767829]  [<ffffffffc003c7de>] ? drm_atomic_check_only+0x18e/0x590 [drm]
[52362.767846]  [<ffffffffc003cc17>] drm_atomic_commit+0x37/0x60 [drm]
[52362.767854]  [<ffffffffc00fc699>] drm_atomic_helper_disable_plane+0xa9/0xf0 [drm_kms_helper]
[52362.767868]  [<ffffffffc002c219>] __setplane_internal+0x169/0x250 [drm]
[52362.767885]  [<ffffffffc003b4aa>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
[52362.767900]  [<ffffffffc002ff16>] drm_mode_setplane+0x136/0x1b0 [drm]
[52362.767911]  [<ffffffffc0021742>] drm_ioctl+0x152/0x540 [drm]
[52362.767925]  [<ffffffffc002fde0>] ? drm_plane_check_pixel_format+0x50/0x50 [drm]
[52362.767929]  [<ffffffff81220c0f>] do_vfs_ioctl+0x29f/0x490
[52362.767932]  [<ffffffff8120f7e1>] ? __sb_end_write+0x21/0x30
[52362.767935]  [<ffffffff8120d3ed>] ? vfs_write+0x15d/0x1a0
[52362.767938]  [<ffffffff81220e79>] SyS_ioctl+0x79/0x90
[52362.767940]  [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71