[ 608.719410] ------------[ cut here ]------------ [ 608.719502] WARNING: CPU: 0 PID: 908 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3553 skl_update_other_pipe_wm+0x16c/0x180 [i915]() [ 608.719509] WARN_ON(!wm_changed) [ 608.719514] Modules linked in: [ 608.719520] rfcomm drbg ansi_cprng bnep snd_hda_codec_hdmi dell_laptop dcdbas i2c_designware_platform dell_wmi i2c_designware_core sparse_keymap dell_led nls_iso8859_1 snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_soc_core cdc_ether snd_compress usbnet ac97_bus snd_hda_codec_realtek r8152 snd_hda_codec_generic snd_pcm_dmaengine mii intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel dw_dmac_core kvm snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep irqbypass crct10dif_pclmul crc32_pclmul snd_pcm brcmfmac ghash_clmulni_intel aesni_intel brcmutil snd_seq_midi snd_seq_midi_event aes_x86_64 cfg80211 lrw snd_rawmidi rtsx_pci_ms memstick gf128mul snd_seq glue_helper ablk_helper cryptd snd_seq_device snd_timer uvcvideo input_leds joydev [ 608.719633] videobuf2_vmalloc videobuf2_memops serio_raw videobuf2_v4l2 videobuf2_core snd videodev hid_multitouch btusb btrtl media soundcore shpchp mei_me idma64 virt_dma mei processor_thermal_device intel_lpss_pci intel_soc_dts_iosf hci_uart btbcm btqca btintel bluetooth int3400_thermal intel_lpss_acpi acpi_thermal_rel intel_lpss acpi_als int3403_thermal int340x_thermal_zone kfifo_buf acpi_pad mac_hid industrialio parport_pc ppdev lp parport autofs4 hid_generic usbhid rtsx_pci_sdmmc i915 psmouse nvme i2c_algo_bit rtsx_pci drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ahci drm libahci wmi i2c_hid hid pinctrl_sunrisepoint video pinctrl_intel fjes [ 608.719755] CPU: 0 PID: 908 Comm: Xorg Tainted: G U W 4.5.0-040500-generic #201603140130 [ 608.719760] Hardware name: Dell Inc. XPS 13 9350/0VM5NC, BIOS 1.2.3 01/08/2016 [ 608.719766] 0000000000000286 0000000033c25cd0 ffff88046d1239a8 ffffffff813e0233 [ 608.719777] ffff88046d1239f0 ffffffffc027b838 ffff88046d1239e0 ffffffff81080e72 [ 608.719785] ffff880075f2e000 ffff880467789bd4 ffff880075f2d000 ffff880467f5cba8 [ 608.719794] Call Trace: [ 608.719810] [<ffffffff813e0233>] dump_stack+0x63/0x90 [ 608.719823] [<ffffffff81080e72>] warn_slowpath_common+0x82/0xc0 [ 608.719832] [<ffffffff81080f0c>] warn_slowpath_fmt+0x5c/0x80 [ 608.719905] [<ffffffffc01b366c>] skl_update_other_pipe_wm+0x16c/0x180 [i915] [ 608.719968] [<ffffffffc01b3805>] skl_update_wm+0x185/0x640 [i915] [ 608.720062] [<ffffffffc023ad00>] ? intel_ddi_post_disable+0x120/0x1e0 [i915] [ 608.720072] [<ffffffff818213f2>] ? mutex_lock+0x12/0x30 [ 608.720161] [<ffffffffc022a455>] ? intel_fbc_disable_crtc+0x45/0xb0 [i915] [ 608.720222] [<ffffffffc01b71de>] intel_update_watermarks+0x1e/0x30 [i915] [ 608.720309] [<ffffffffc021e41c>] intel_atomic_commit+0x3dc/0xb30 [i915] [ 608.720378] [<ffffffffc00b8761>] ? drm_atomic_check_only+0x181/0x600 [drm] [ 608.720435] [<ffffffffc00b7f7f>] ? drm_atomic_set_crtc_for_connector+0x2f/0xe0 [drm] [ 608.720487] [<ffffffffc00b8c17>] drm_atomic_commit+0x37/0x60 [drm] [ 608.720517] [<ffffffffc0120bb6>] drm_atomic_helper_set_config+0x76/0xb0 [drm_kms_helper] [ 608.720569] [<ffffffffc00b789a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm] [ 608.720621] [<ffffffffc00a7c32>] drm_mode_set_config_internal+0x62/0x100 [drm] [ 608.720672] [<ffffffffc00ac5b0>] drm_mode_setcrtc+0x3e0/0x500 [drm] [ 608.720710] [<ffffffffc009d812>] drm_ioctl+0x152/0x540 [drm] [ 608.720756] [<ffffffffc00ac1d0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm] [ 608.720771] [<ffffffff81214707>] ? __vfs_write+0x37/0x120 [ 608.720781] [<ffffffff81228bd1>] do_vfs_ioctl+0xa1/0x5b0 [ 608.720789] [<ffffffff812178e1>] ? __sb_end_write+0x21/0x30 [ 608.720799] [<ffffffff812150ed>] ? vfs_write+0x15d/0x1a0 [ 608.720807] [<ffffffff81229159>] SyS_ioctl+0x79/0x90 [ 608.720815] [<ffffffff8122b2b1>] ? SyS_poll+0x71/0x130 [ 608.720826] [<ffffffff818235f6>] entry_SYSCALL_64_fastpath+0x16/0x75 [ 608.720832] ---[ end trace 90a1d475b0fe2a37 ]---
Please file new drm/i915 bug reports to the freedesktop.org bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel Additionally, that's not a crash, that's a warning. There's probably an existing bug over at freedesktop.org.
OK< anyway, HDMI oiutput doe snot work with any resolutions above 1440x900