[ 48.889483] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 48.930686] ------------[ cut here ]------------ [ 48.930692] WARNING: CPU: 0 PID: 47 at drivers/gpu/drm/i915/intel_pm.c:3553 skl_update_other_pipe_wm+0x108/0x110 [i915]() [ 48.930693] WARN_ON(!wm_changed) [ 48.930693] Modules linked in: [ 48.930694] sha256_generic hmac drbg cpufreq_stats sd_mod kvm_intel kvm irqbypass i2c_i801 snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore i915 video backlight tpm_tis usb_storage sr_mod cdrom ahci libahci libata i2c_hid [ 48.930703] CPU: 0 PID: 47 Comm: kworker/0:1 Not tainted 4.5.0-rc7 #14 [ 48.930703] Hardware name: LENOVO 30AT003QBL/SKYBAY, BIOS FWKT39A 02/14/2016 [ 48.930706] Workqueue: events_long drm_dp_mst_link_probe_work [ 48.930707] 0000000000000000 ffffffff812274e9 ffff88084c63b9f8 ffffffffa017c638 [ 48.930708] ffffffff81065a63 ffff88084ac13000 ffff88084c63ba48 ffff88084bc396f4 [ 48.930709] ffff88084ad4a000 ffff88084ad4a3a8 ffffffff81065ad7 ffffffffa018c156 [ 48.930710] Call Trace: [ 48.930712] [] ? dump_stack+0x46/0x5d [ 48.930714] [] ? warn_slowpath_common+0x73/0xa0 [ 48.930715] [] ? warn_slowpath_fmt+0x47/0x50 [ 48.930720] [] ? skl_update_other_pipe_wm+0x108/0x110 [i915] [ 48.930724] [] ? skl_update_wm+0x13c/0x580 [i915] [ 48.930729] [] ? intel_ddi_enable_transcoder_func+0x167/0x230 [i915] [ 48.930735] [] ? haswell_crtc_enable+0x303/0x880 [i915] [ 48.930741] [] ? intel_atomic_commit+0x693/0x1680 [i915] [ 48.930743] [] ? drm_atomic_add_affected_connectors+0x1d/0xe0 [ 48.930744] [] ? restore_fbdev_mode+0x21e/0x250 [ 48.930746] [] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x70 [ 48.930747] [] ? drm_fb_helper_set_par+0x24/0x50 [ 48.930748] [] ? drm_fb_helper_hotplug_event+0xc0/0x110 [ 48.930749] [] ? drm_dp_send_link_address+0x26b/0x320 [ 48.930751] [] ? put_prev_entity+0x30/0x820 [ 48.930752] [] ? dequeue_task_fair+0x53/0x9a0 [ 48.930753] [] ? pick_next_task_fair+0x133/0x470 [ 48.930754] [] ? drm_dp_check_and_send_link_address+0xa3/0xb0 [ 48.930755] [] ? drm_dp_mst_link_probe_work+0x4e/0xa0 [ 48.930756] [] ? process_one_work+0x125/0x3f0 [ 48.930758] [] ? worker_thread+0x42/0x4b0 [ 48.930759] [] ? process_one_work+0x3f0/0x3f0 [ 48.930760] [] ? process_one_work+0x3f0/0x3f0 [ 48.930761] [] ? kthread+0xb8/0xd0 [ 48.930762] [] ? kthread_worker_fn+0x160/0x160 [ 48.930766] [] ? ret_from_fork+0x3f/0x70 [ 48.930767] [] ? kthread_worker_fn+0x160/0x160 [ 48.930768] ---[ end trace 7d70df2abc841163 ]--- [ 48.940792] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 48.964301] [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 49.023005] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 49.042507] [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [ 49.071393] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 49.174006] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 49.227991] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 49.454460] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 50.406981] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 50.660836] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 64.055855] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 64.803311] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 64.952861] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 65.105204] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 65.551143] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 65.839284] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 65.993406] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 69.429217] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 69.704439] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 69.857744] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 70.794362] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 71.874373] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 72.033101] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 72.188456] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 73.892075] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 74.984915] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 75.330464] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 75.570865] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 75.719989] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 75.868811] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 76.319631] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 76.469946] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 76.623318] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 94.688947] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 94.846997] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 96.836941] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 97.023141] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 97.172230] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 97.321321] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 97.733241] ------------[ cut here ]------------ [ 97.733251] WARNING: CPU: 0 PID: 454 at drivers/gpu/drm/i915/intel_pm.c:3553 skl_update_other_pipe_wm+0x108/0x110 [i915]() [ 97.733252] WARN_ON(!wm_changed) [ 97.733253] Modules linked in: [ 97.733254] sha256_generic hmac drbg cpufreq_stats sd_mod kvm_intel kvm irqbypass i2c_i801 snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore i915 video backlight tpm_tis usb_storage sr_mod cdrom ahci libahci libata i2c_hid [ 97.733264] CPU: 0 PID: 454 Comm: kworker/0:2 Tainted: G W 4.5.0-rc7 #14 [ 97.733265] Hardware name: LENOVO 30AT003QBL/SKYBAY, BIOS FWKT39A 02/14/2016 [ 97.733267] Workqueue: events drm_dp_destroy_connector_work [ 97.733269] 0000000000000000 ffffffff812274e9 ffff88084a8dfb28 ffffffffa017c638 [ 97.733270] ffffffff81065a63 ffff88084ac13000 ffff88084a8dfb78 ffff88084bc396f4 [ 97.733271] ffff88084ad4a000 ffff88084ad4a3a8 ffffffff81065ad7 ffffffffa018c156 [ 97.733273] Call Trace: [ 97.733276] [] ? dump_stack+0x46/0x5d [ 97.733278] [] ? warn_slowpath_common+0x73/0xa0 [ 97.733280] [] ? warn_slowpath_fmt+0x47/0x50 [ 97.733285] [] ? skl_update_other_pipe_wm+0x108/0x110 [i915] [ 97.733290] [] ? skl_update_wm+0x13c/0x580 [i915] [ 97.733297] [] ? intel_mst_post_disable_dp+0x46/0xb0 [i915] [ 97.733305] [] ? intel_disable_shared_dpll+0xa1/0x200 [i915] [ 97.733312] [] ? intel_atomic_commit+0x39e/0x1680 [i915] [ 97.733314] [] ? drm_atomic_check_only+0x180/0x600 [ 97.733316] [] ? drm_atomic_set_crtc_for_connector+0x25/0xd0 [ 97.733317] [] ? drm_atomic_helper_set_config+0x6d/0xa0 [ 97.733324] [] ? intel_dp_destroy_mst_connector+0x40/0xe0 [i915] [ 97.733325] [] ? drm_dp_destroy_connector_work+0xa8/0x160 [ 97.733327] [] ? process_one_work+0x125/0x3f0 [ 97.733329] [] ? worker_thread+0x42/0x4b0 [ 97.733330] [] ? process_one_work+0x3f0/0x3f0 [ 97.733331] [] ? process_one_work+0x3f0/0x3f0 [ 97.733333] [] ? kthread+0xb8/0xd0 [ 97.733334] [] ? kthread_worker_fn+0x160/0x160 [ 97.733335] [] ? ret_from_fork+0x3f/0x70 [ 97.733336] [] ? kthread_worker_fn+0x160/0x160 [ 97.733337] ---[ end trace 7d70df2abc841164 ]---