The only suspicious entries in my /var/log/syslog from the time of the crash, are a few entries like: May 31 14:05:16 caius kernel: [74723.170104] WARNING: CPU: 0 PID: 1479 at /build/linux-0XAgc4/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]() May 31 14:05:16 caius kernel: [74723.170105] WARN_ON(!wm_changed) May 31 14:05:16 caius kernel: [74723.170124] Modules linked in: btusb btrtl cdc_acm drbg ansi_cprng ctr ccm nvram msr rfcomm cmac bnep binfmt_misc arc4 hid_multitouch uvcvideo i2c_designware_platform dell_wmi i2 c_designware_core videobuf2_vmalloc videobuf2_memops cdc_ether videobuf2_v4l2 videobuf2_core usbnet v4l2_common videodev r8152 mii media dcdbas dell_smm_hwmon intel_rapl x86_pkg_temp_thermal intel_powerclamp cor etemp snd_hda_codec_hdmi(OE) dell_led kvm_intel kvm irqbypass snd_hda_codec_realtek(OE) snd_hda_codec_generic(OE) ath10k_pci ath10k_core snd_hda_intel(OE) snd_hda_codec(OE) crct10dif_pclmul crc32_pclmul ath snd_ hda_core(OE) mac80211 ghash_clmulni_intel aesni_intel snd_hwdep aes_x86_64 lrw gf128mul glue_helper snd_pcm cfg80211 snd_seq_midi snd_seq_midi_event snd_rawmidi ablk_helper snd_seq cryptd rtsx_pci_ms memstick sn d_seq_device snd_timer mei_me hci_uart snd mei idma64 shpchp virt_dma soundcore joydev input_leds serio_raw btbcm btqca btintel intel_lpss_pci bluetooth processor_thermal_device intel_soc_dts_iosf acpi_als intel _hid(OE) kfifo_buf industrialio intel_lpss_acpi int3403_thermal int3400_thermal int340x_thermal_zone acpi_thermal_rel intel_lpss sparse_keymap dell_smo8800 acpi_pad mac_hid sunrpc parport_pc ppdev lp parport aut ofs4 btrfs xor hid_apple raid6_pq hid_generic usbhid rtsx_pci_sdmmc i915_bpo psmouse intel_ips i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci drm rtsx_pci libahci wmi i2c_hid hid pinctrl_sunrisepoint video pinctrl_intel fjes [last unloaded: btrtl] May 31 14:05:16 caius kernel: [74723.170142] CPU: 0 PID: 1479 Comm: Xorg Tainted: G W OE 4.4.0-78-generic #99-Ubuntu May 31 14:05:16 caius kernel: [74723.170142] Hardware name: Dell Inc. Precision 5520/0GPNW9, BIOS 1.0.2 12/28/2016 May 31 14:05:16 caius kernel: [74723.170144] 0000000000000286 00000000d1399a48 ffff880851797650 ffffffff813f8dd3 May 31 14:05:16 caius kernel: [74723.170145] ffff880851797698 ffffffffc0287b58 ffff880851797688 ffffffff81081302 May 31 14:05:16 caius kernel: [74723.170146] ffff88085425d000 ffff88085355a148 ffff88085425c000 ffff880853500b78 May 31 14:05:16 caius kernel: [74723.170146] Call Trace: May 31 14:05:16 caius kernel: [74723.170148] [] dump_stack+0x63/0x90 May 31 14:05:16 caius kernel: [74723.170150] [] warn_slowpath_common+0x82/0xc0 May 31 14:05:16 caius kernel: [74723.170151] [] warn_slowpath_fmt+0x5c/0x80 May 31 14:05:16 caius kernel: [74723.170163] [] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170174] [] skl_update_wm+0x185/0x610 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170191] [] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170202] [] intel_update_watermarks+0x1e/0x30 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170218] [] haswell_crtc_enable+0x761/0x8e0 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170234] [] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170240] [] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper] May 31 14:05:16 caius kernel: [74723.170256] [] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170269] [] ? drm_atomic_check_only+0x18e/0x590 [drm] May 31 14:05:16 caius kernel: [74723.170279] [] drm_atomic_commit+0x37/0x60 [drm] May 31 14:05:16 caius kernel: [74723.170284] [] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper] May 31 14:05:16 caius kernel: [74723.170294] [] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm] May 31 14:05:16 caius kernel: [74723.170300] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper] May 31 14:05:16 caius kernel: [74723.170304] [] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper] May 31 14:05:16 caius kernel: [74723.170320] [] intel_fbdev_set_par+0x1a/0x60 [i915_bpo] May 31 14:05:16 caius kernel: [74723.170322] [] ? fb_set_var+0x2ef/0x460 May 31 14:05:16 caius kernel: [74723.170323] [] fb_set_var+0x236/0x460 May 31 14:05:16 caius kernel: [74723.170325] [] ? sock_poll+0x107/0x120 May 31 14:05:16 caius kernel: [74723.170327] [] ? check_preempt_wakeup+0x193/0x220 May 31 14:05:16 caius kernel: [74723.170327] [] ? update_curr+0x79/0x160 May 31 14:05:16 caius kernel: [74723.170330] [] fbcon_blank+0x30f/0x350 May 31 14:05:16 caius kernel: [74723.170331] [] ? __switch_to+0x437/0x5c0 May 31 14:05:16 caius kernel: [74723.170334] [] do_unblank_screen+0xd3/0x1a0 May 31 14:05:16 caius kernel: [74723.170335] [] complete_change_console+0x59/0xe0 May 31 14:05:16 caius kernel: [74723.170336] [] vt_ioctl+0x710/0x12f0 May 31 14:05:16 caius kernel: [74723.170343] [] ? drm_ioctl+0x189/0x540 [drm] May 31 14:05:16 caius kernel: [74723.170344] [] tty_ioctl+0x35f/0xc40 May 31 14:05:16 caius kernel: [74723.170346] [] ? handle_mm_fault+0xce0/0x1820 May 31 14:05:16 caius kernel: [74723.170347] [] ? __switch_to+0x437/0x5c0 May 31 14:05:16 caius kernel: [74723.170349] [] do_vfs_ioctl+0x29f/0x490 May 31 14:05:16 caius kernel: [74723.170350] [] ? __do_page_fault+0x1b4/0x400 May 31 14:05:16 caius kernel: [74723.170351] [] ? schedule+0x35/0x80 May 31 14:05:16 caius kernel: [74723.170352] [] SyS_ioctl+0x79/0x90 May 31 14:05:16 caius kernel: [74723.170354] [] entry_SYSCALL_64_fastpath+0x16/0x71 May 31 14:05:16 caius kernel: [74723.170362] ---[ end trace 4186c97217dc5c88 ]--- May 31 14:05:16 caius kernel: [74723.224341] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 154 May 31 14:05:16 caius kernel: [74723.224342] Raw EDID: May 31 14:05:16 caius kernel: [74723.224343] 00 ff ff ff ff ff ff 00 1e 6d 91 57 01 01 01 01 May 31 14:05:16 caius kernel: [74723.224344] 01 13 01 03 80 33 1d 78 ea c6 65 a0 59 59 58 9d May 31 14:05:16 caius kernel: [74723.224345] 27 0e 50 54 21 08 00 71 40 81 40 81 80 b3 00 01 May 31 14:05:16 caius kernel: [74723.224346] 01 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 May 31 14:05:16 caius kernel: [74723.224347] 2c 45 00 fe 22 11 00 00 1e 00 00 00 fd 00 38 3d May 31 14:05:16 caius kernel: [74723.224348] 1e 53 0f 00 0a 20 20 20 20 20 20 00 00 00 fc 00 May 31 14:05:16 caius kernel: [74723.224349] 45 32 33 35 30 0a 20 20 20 20 20 20 20 00 00 00 May 31 14:05:16 caius kernel: [74723.224350] ff 00 0a 20 20 20 20 20 20 20 20 20 20 20 20 01