[136253.236612] [drm:gen8_irq_handler] *ERROR* CPU pipe B FIFO underrun [136253.248694] [drm:intel_dp_link_training_channel_equalization] *ERROR* 5.4 Gbps link rate without HBR2/TPS3 support [136262.855593] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [136263.035474] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [136266.255424] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [136266.436525] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137269.639778] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137269.807853] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137269.980768] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137270.151690] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137272.175713] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137272.354720] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137279.951028] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137280.132042] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137284.528112] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137284.702960] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137286.320069] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137286.500122] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137299.828678] [drm:intel_dp_link_training_channel_equalization] *ERROR* 5.4 Gbps link rate without HBR2/TPS3 support [137302.394287] [drm:gen8_irq_handler] *ERROR* CPU pipe B FIFO underrun [137302.402604] [drm:intel_dp_link_training_channel_equalization] *ERROR* 5.4 Gbps link rate without HBR2/TPS3 support [137306.344387] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137306.522478] usb 3-1.1.1.3: reset full-speed USB device number 8 using xhci_hcd [137312.840160] snd_hda_codec_hdmi hdaudioC0D2: HDMI: ELD buf size is 0, force 128 [137312.840249] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD data byte 0 [137334.788484] snd_hda_codec_hdmi hdaudioC0D2: HDMI: ELD buf size is 0, force 128 [137334.788568] snd_hda_codec_hdmi hdaudioC0D2: HDMI: invalid ELD data byte 0 [137334.801607] ------------[ cut here ]------------ [137334.801624] WARNING: CPU: 0 PID: 4100 at drivers/gpu/drm/i915/intel_pm.c:3597 skl_update_other_pipe_wm+0x168/0x170() [137334.801627] WARN_ON(!wm_changed) [137334.801630] Modules linked in: [137334.801634] hid_roccat_koneplus hid_roccat hid_roccat_common fuse vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev kvm_intel kvm irqbypass nvidia(PO) [137334.801680] CPU: 0 PID: 4100 Comm: X Tainted: P W O 4.4.0-gentoo-r1 #15 [137334.801683] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19 01/25/2016 [137334.801687] ffffffff81bf3968 ffffffff81377013 ffff8804ae87b8c0 ffffffff810867c7 [137334.801695] ffff8804af018000 ffff8804ae87b910 ffff8804ae3c7000 0000000000000000 [137334.801702] ffff8804adede378 ffffffff81086847 ffffffff81c2c1c0 ffff880400000020 [137334.801709] Call Trace: [137334.801721] [] ? dump_stack+0x40/0x5d [137334.801730] [] ? warn_slowpath_common+0x77/0xb0 [137334.801737] [] ? warn_slowpath_fmt+0x47/0x50 [137334.801745] [] ? skl_update_other_pipe_wm+0x168/0x170 [137334.801754] [] ? skl_update_wm+0x1de/0x660 [137334.801761] [] ? wait_woken+0x80/0x80 [137334.801771] [] ? intel_atomic_commit+0x40e/0x1290 [137334.801778] [] ? drm_atomic_helper_check_planes+0x12f/0x1a0 [137334.801787] [] ? drm_atomic_add_affected_connectors+0x83/0xe0 [137334.801793] [] ? drm_atomic_helper_set_config+0x6d/0xa0 [137334.801801] [] ? drm_mode_set_config_internal+0x59/0xf0 [137334.801809] [] ? drm_mode_setcrtc+0x17d/0x4d0 [137334.801817] [] ? drm_ioctl+0x10e/0x460 [137334.801825] [] ? drm_mode_setplane+0x1b0/0x1b0 [137334.801832] [] ? hrtimer_start_range_ns+0x199/0x340 [137334.801841] [] ? do_vfs_ioctl+0x2bf/0x490 [137334.801851] [] ? __sys_recvmsg+0x58/0x70 [137334.801859] [] ? SyS_ioctl+0x71/0x80 [137334.801868] [] ? entry_SYSCALL_64_fastpath+0x12/0x6a [137334.801873] ---[ end trace 4dbd9e0ca41982a7 ]--- [137334.801880] ------------[ cut here ]------------ [137334.801890] WARNING: CPU: 0 PID: 4100 at drivers/gpu/drm/i915/intel_pm.c:3597 skl_update_other_pipe_wm+0x168/0x170() [137334.801892] WARN_ON(!wm_changed) [137334.801894] Modules linked in: [137334.801896] hid_roccat_koneplus hid_roccat hid_roccat_common fuse vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev kvm_intel kvm irqbypass nvidia(PO) [137334.801931] CPU: 0 PID: 4100 Comm: X Tainted: P W O 4.4.0-gentoo-r1 #15 [137334.801934] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19 01/25/2016 [137334.801936] ffffffff81bf3968 ffffffff81377013 ffff8804ae87b8c0 ffffffff810867c7 [137334.801943] ffff8804ae3cf000 ffff8804ae87b910 ffff8804ae3c7000 0000000000000000 [137334.801950] ffff8804adede378 ffffffff81086847 ffffffff81c2c1c0 ffff880400000020 [137334.801957] Call Trace: [137334.801963] [] ? dump_stack+0x40/0x5d [137334.801970] [] ? warn_slowpath_common+0x77/0xb0 [137334.801977] [] ? warn_slowpath_fmt+0x47/0x50 [137334.801985] [] ? skl_update_other_pipe_wm+0x168/0x170 [137334.801994] [] ? skl_update_wm+0x1de/0x660 [137334.802000] [] ? wait_woken+0x80/0x80 [137334.802009] [] ? intel_atomic_commit+0x40e/0x1290 [137334.802015] [] ? drm_atomic_helper_check_planes+0x12f/0x1a0 [137334.802024] [] ? drm_atomic_add_affected_connectors+0x83/0xe0 [137334.802031] [] ? drm_atomic_helper_set_config+0x6d/0xa0 [137334.802038] [] ? drm_mode_set_config_internal+0x59/0xf0 [137334.802045] [] ? drm_mode_setcrtc+0x17d/0x4d0 [137334.802053] [] ? drm_ioctl+0x10e/0x460 [137334.802061] [] ? drm_mode_setplane+0x1b0/0x1b0 [137334.802068] [] ? hrtimer_start_range_ns+0x199/0x340 [137334.802075] [] ? do_vfs_ioctl+0x2bf/0x490 [137334.802083] [] ? __sys_recvmsg+0x58/0x70 [137334.802090] [] ? SyS_ioctl+0x71/0x80 [137334.802098] [] ? entry_SYSCALL_64_fastpath+0x12/0x6a [137334.802102] ---[ end trace 4dbd9e0ca41982a8 ]---