The dmesg includes a section that seems related. Seems like something in i915 crashed:
[70806.923660] ------------[ cut here ]------------ [70806.923752] WARNING: CPU: 1 PID: 2941 at /build/linux-dcxD3m/linux-4.4.0/ubuntu/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]() [70806.923758] WARN_ON(!wm_changed) [70806.923763] Modules linked in: [70806.923769] ses enclosure uas usb_storage btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm bnep arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common iwlmvm videodev media mac80211 input_leds joydev snd_hda_codec_hdmi serio_raw snd_hda_codec_realtek snd_soc_skl btusb snd_hda_codec_generic snd_soc_skl_ipc btrtl btbcm snd_hda_ext_core btintel snd_soc_sst_ipc snd_soc_sst_dsp bluetooth snd_soc_core iwlwifi snd_compress ac97_bus snd_pcm_dmaengine dw_dmac_core rtsx_pci_ms cfg80211 memstick snd_hda_intel thinkpad_acpi snd_hda_codec snd_hda_core snd_hwdep nvram snd_pcm snd_seq_midi snd_seq_midi_event [70806.923903] snd_rawmidi mei_me mei shpchp snd_seq snd_seq_device snd_timer snd soundcore mac_hid coretemp parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i915_bpo psmouse e1000e intel_ips i2c_algo_bit ptp drm_kms_helper pps_core rtsx_pci syscopyarea sysfillrect sysimgblt fb_sys_fops ahci drm libahci wmi video fjes [70806.923992] CPU: 1 PID: 2941 Comm: Xorg Tainted: G OE 4.4.0-31-generic #50-Ubuntu [70806.923998] Hardware name: LENOVO 20FAS5TS00/20FAS5TS00, BIOS N1CET45W (1.13 ) 06/02/2016 [70806.924003] 0000000000000286 00000000174a8c60 ffff880216e379a8 ffffffff813f1143 [70806.924014] ffff880216e379f0 ffffffffc0292c98 ffff880216e379e0 ffffffff81081102 [70806.924022] ffff880214032000 ffff880213ec9d9c ffff880214037000 ffff880218fe5378 [70806.924031] Call Trace: [70806.924052] [<ffffffff813f1143>] dump_stack+0x63/0x90 [70806.924065] [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0 [70806.924074] [<ffffffff8108119c>] warn_slowpath_fmt+0x5c/0x80 [70806.924132] [<ffffffffc01c469c>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo] [70806.924188] [<ffffffffc01c4836>] skl_update_wm+0x186/0x5f0 [i915_bpo] [70806.924243] [<ffffffffc01c855e>] intel_update_watermarks+0x1e/0x30 [i915_bpo] [70806.924328] [<ffffffffc0230db5>] intel_atomic_commit+0x485/0xdc0 [i915_bpo] [70806.924341] [<ffffffff810c3ca0>] ? wake_atomic_t_function+0x60/0x60 [70806.924405] [<ffffffffc00607de>] ? drm_atomic_check_only+0x18e/0x590 [drm] [70806.924458] [<ffffffffc0060c17>] drm_atomic_commit+0x37/0x60 [drm] [70806.924496] [<ffffffffc00fbb16>] drm_atomic_helper_set_config+0x76/0xb0 [drm_kms_helper] [70806.924551] [<ffffffffc005f4aa>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm] [70806.924601] [<ffffffffc004fe42>] drm_mode_set_config_internal+0x62/0x100 [drm] [70806.924651] [<ffffffffc0054362>] drm_mode_setcrtc+0x3d2/0x4f0 [drm] [70806.924662] [<ffffffff8108d44b>] ? recalc_sigpending+0x1b/0x50 [70806.924697] [<ffffffffc0045742>] drm_ioctl+0x152/0x540 [drm] [70806.924707] [<ffffffff81090ce6>] ? __set_current_blocked+0x36/0x60 [70806.924749] [<ffffffffc0053f90>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [70806.924761] [<ffffffff81220c0f>] do_vfs_ioctl+0x29f/0x490 [70806.924772] [<ffffffff8103b32d>] ? fpu__restore_sig+0x4d/0x60 [70806.924780] [<ffffffff81220e79>] SyS_ioctl+0x79/0x90 [70806.924790] [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71 [70806.924865] ---[ end trace 916cb4f596cad652 ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1637754 Title: No image out of display port in Lenovo T460s To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1637754/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
