Running 4.4.0-23-generic, I see the same errors as https://bugs.freedesktop.org/show_bug.cgi?id=89055

I see 
[ 1248.953987] PM: early resume of devices complete after 6.795 msecs
[ 1248.956059] rtc_cmos 00:02: System wakeup disabled by ACPI
[ 1249.227488] usb 1-8: reset high-speed USB device number 3 using xhci_hcd
[ 1249.393400] ------------[ cut here ]------------
[ 1249.393456] WARNING: CPU: 2 PID: 5122 at /build/linux-L7iE5S/linux-4.4.0/ubuntu/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
[ 1249.393458] WARN_ON(!wm_changed)
[ 1249.393514] Modules linked in: drbg ansi_cprng ctr ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables overlay bnep snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic joydev binfmt_misc arc4 acer_wmi sparse_keymap nls_iso8859_1 intel_rapl snd_soc_skl x86_pkg_temp_thermal uvcvideo intel_powerclamp coretemp videobuf2_vmalloc snd_soc_skl_ipc videobuf2_memops crct10dif_pclmul videobuf2_v4l2 snd_hda_ext_core crc32_pclmul videobuf2_core snd_soc_sst_ipc v4l2_common snd_soc_sst_dsp videodev aesni_intel snd_soc_core media snd_compress ac97_bus snd_pcm_dmaengine
[ 1249.393565]  dw_dmac_core aes_x86_64 lrw gf128mul snd_hda_intel glue_helper ablk_helper cryptd snd_hda_codec snd_hda_core snd_hwdep iwlmvm snd_pcm input_leds mac80211 serio_raw btusb thinkpad_acpi btrtl btbcm btintel nvram bluetooth iwlwifi snd_seq_midi snd_seq_midi_event cfg80211 snd_rawmidi mei_me mei snd_seq shpchp snd_seq_device snd_timer snd soundcore mac_hid tpm_crb kvm_intel kvm irqbypass parport_pc ppdev sunrpc lp parport autofs4 i915_bpo intel_ips i2c_algo_bit drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops drm nvme wmi video fjes
[ 1249.393570] CPU: 2 PID: 5122 Comm: kworker/u16:12 Tainted: G     U  W       4.4.0-23-generic #41-Ubuntu
[ 1249.393572] Hardware name: LENOVO 20FBCTO1WW/20FBCTO1WW, BIOS N1FET40W (1.14 ) 04/18/2016
[ 1249.393581] Workqueue: events_unbound async_run_entry_fn
[ 1249.393587]  0000000000000286 00000000280ea446 ffff88040bb6f900 ffffffff813eaa03
[ 1249.393590]  ffff88040bb6f948 ffffffffc0224c98 ffff88040bb6f938 ffffffff810810d2
[ 1249.393594]  ffff8804093ff000 ffff8804086f9d9c ffff8804093f9000 ffff88040e53eb78
[ 1249.393595] Call Trace:
[ 1249.393605]  [<ffffffff813eaa03>] dump_stack+0x63/0x90
[ 1249.393611]  [<ffffffff810810d2>] warn_slowpath_common+0x82/0xc0
[ 1249.393615]  [<ffffffff8108116c>] warn_slowpath_fmt+0x5c/0x80
[ 1249.393656]  [<ffffffffc015667c>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
[ 1249.393693]  [<ffffffffc0156816>] skl_update_wm+0x186/0x5f0 [i915_bpo]
[ 1249.393749]  [<ffffffffc01e248f>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
[ 1249.393786]  [<ffffffffc015a53e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
[ 1249.393841]  [<ffffffffc01c6521>] haswell_crtc_enable+0x321/0x8c0 [i915_bpo]
[ 1249.393893]  [<ffffffffc01b2b9e>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
[ 1249.393911]  [<ffffffffc010c434>] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper]
[ 1249.393963]  [<ffffffffc01c2ed8>] intel_atomic_commit+0x5f8/0xdc0 [i915_bpo]
[ 1249.394009]  [<ffffffffc007e7be>] ? drm_atomic_check_only+0x18e/0x590 [drm]
[ 1249.394047]  [<ffffffffc007ebf7>] drm_atomic_commit+0x37/0x60 [drm]
[ 1249.394099]  [<ffffffffc01cc6b4>] intel_display_resume+0xc4/0x160 [i915_bpo]
[ 1249.394128]  [<ffffffffc0145acd>] i915_drm_resume+0xdd/0x160 [i915_bpo]
[ 1249.394157]  [<ffffffffc0145b75>] i915_pm_resume+0x25/0x30 [i915_bpo]
[ 1249.394162]  [<ffffffff8143b5c4>] pci_pm_resume+0x64/0xa0
[ 1249.394164]  [<ffffffff8143b560>] ? pci_pm_thaw+0x90/0x90
[ 1249.394171]  [<ffffffff8155a29e>] dpm_run_callback+0x4e/0x140
[ 1249.394176]  [<ffffffff8155a843>] device_resume+0xd3/0x1f0
[ 1249.394181]  [<ffffffff8155a97d>] async_resume+0x1d/0x50
[ 1249.394186]  [<ffffffff810a30a8>] async_run_entry_fn+0x48/0x150
[ 1249.394191]  [<ffffffff8109a175>] process_one_work+0x165/0x480
[ 1249.394196]  [<ffffffff8109a4db>] worker_thread+0x4b/0x4c0
[ 1249.394200]  [<ffffffff8109a490>] ? process_one_work+0x480/0x480
[ 1249.394203]  [<ffffffff810a06a8>] kthread+0xd8/0xf0
[ 1249.394207]  [<ffffffff810a05d0>] ? kthread_create_on_node+0x1e0/0x1e0
[ 1249.394212]  [<ffffffff81825e4f>] ret_from_fork+0x3f/0x70
[ 1249.394215]  [<ffffffff810a05d0>] ? kthread_create_on_node+0x1e0/0x1e0
[ 1249.394218] ---[ end trace 1135ec8b42e2923e ]---