这似乎不是一个严重的问题，但我想对我今天早上启动笔记本电脑时收到的这个警告进行一些了解。
我总是从 grub 中的内核中删除“安静”标志，这就是我看到警告消息的原因。它只会让我的笔记本电脑挂起大约一秒钟，然后正常启动。但我还是不喜欢非干净的启动日志 =D
Oct 18 11:38:06 cerberus kernel: [ 2.891228] ------------[ cut here ]------------
Oct 18 11:38:06 cerberus kernel: [ 2.891247] WARNING: CPU: 0 PID: 192 at /build/linux-BwgxJb/linux-4.4.0/ubuntu/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
Oct 18 11:38:06 cerberus kernel: [ 2.891248] WARN_ON(!wm_changed)
Oct 18 11:38:06 cerberus kernel: [ 2.891255] Modules linked in: hid_logitech_hidpp(+) hid_logitech_dj usbhid rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops psmouse drm r8169 ahci rtsx_pci mii libahci i2c_hid pinctrl_sunrisepoint video hid pinctrl_intel fjes
Oct 18 11:38:06 cerberus kernel: [ 2.891256] CPU: 0 PID: 192 Comm: kworker/u16:4 Not tainted 4.4.0-43-generic #63-Ubuntu
Oct 18 11:38:06 cerberus kernel: [ 2.891256] Hardware name: GIGABYTE P34V5/P34V5, BIOS FA09 02/17/2016
Oct 18 11:38:06 cerberus kernel: [ 2.891259] Workqueue: events_unbound async_run_entry_fn
Oct 18 11:38:06 cerberus kernel: [ 2.891261] 0000000000000286 0000000047745852 ffff880467847680 ffffffff813f1f93
Oct 18 11:38:06 cerberus kernel: [ 2.891261] ffff8804678476c8 ffffffffc02a09a0 ffff8804678476b8 ffffffff81081212
Oct 18 11:38:06 cerberus kernel: [ 2.891262] ffff880035583000 ffff880467e2a148 ffff880035584000 ffff880468a15378
Oct 18 11:38:06 cerberus kernel: [ 2.891262] Call Trace:
Oct 18 11:38:06 cerberus kernel: [ 2.891265] [<ffffffff813f1f93>] dump_stack+0x63/0x90
Oct 18 11:38:06 cerberus kernel: [ 2.891267] [<ffffffff81081212>] warn_slowpath_common+0x82/0xc0
Oct 18 11:38:06 cerberus kernel: [ 2.891268] [<ffffffff810812ac>] warn_slowpath_fmt+0x5c/0x80
Oct 18 11:38:06 cerberus kernel: [ 2.891281] [<ffffffffc01c1fec>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891293] [<ffffffffc01c2185>] skl_update_wm+0x185/0x610 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891312] [<ffffffffc02533ef>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891324] [<ffffffffc01c5f0e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891342] [<ffffffffc02356c1>] haswell_crtc_enable+0x761/0x8e0 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891358] [<ffffffffc0220cfe>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891363] [<ffffffffc01756d4>] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper]
Oct 18 11:38:06 cerberus kernel: [ 2.891378] [<ffffffffc02315c6>] intel_atomic_commit+0x5d6/0x14a0 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891388] [<ffffffffc00dabde>] ? drm_atomic_check_only+0x18e/0x590 [drm]
Oct 18 11:38:06 cerberus kernel: [ 2.891396] [<ffffffffc00db017>] drm_atomic_commit+0x37/0x60 [drm]
Oct 18 11:38:06 cerberus kernel: [ 2.891400] [<ffffffffc0176e4f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
Oct 18 11:38:06 cerberus kernel: [ 2.891407] [<ffffffffc00d979a>] ? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
Oct 18 11:38:06 cerberus kernel: [ 2.891411] [<ffffffffc0179023>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
Oct 18 11:38:06 cerberus kernel: [ 2.891414] [<ffffffffc017909d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
Oct 18 11:38:06 cerberus kernel: [ 2.891432] [<ffffffffc024b5fa>] intel_fbdev_set_par+0x1a/0x60 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891433] [<ffffffff8146e340>] fbcon_init+0x570/0x5f0
Oct 18 11:38:06 cerberus kernel: [ 2.891435] [<ffffffff81500356>] visual_init+0xd6/0x130
Oct 18 11:38:06 cerberus kernel: [ 2.891436] [<ffffffff81502271>] do_bind_con_driver+0x1c1/0x3a0
Oct 18 11:38:06 cerberus kernel: [ 2.891437] [<ffffffff81502789>] do_take_over_console+0x149/0x1b0
Oct 18 11:38:06 cerberus kernel: [ 2.891438] [<ffffffff8146a1a7>] do_fbcon_takeover+0x57/0xb0
Oct 18 11:38:06 cerberus kernel: [ 2.891439] [<ffffffff8146edb8>] fbcon_event_notify+0x658/0x750
Oct 18 11:38:06 cerberus kernel: [ 2.891440] [<ffffffff810a180a>] notifier_call_chain+0x4a/0x70
Oct 18 11:38:06 cerberus kernel: [ 2.891441] [<ffffffff810a1b47>] __blocking_notifier_call_chain+0x47/0x60
Oct 18 11:38:06 cerberus kernel: [ 2.891442] [<ffffffff810a1b76>] blocking_notifier_call_chain+0x16/0x20
Oct 18 11:38:06 cerberus kernel: [ 2.891443] [<ffffffff81474a4b>] fb_notifier_call_chain+0x1b/0x20
Oct 18 11:38:06 cerberus kernel: [ 2.891444] [<ffffffff81476bbf>] register_framebuffer+0x20f/0x350
Oct 18 11:38:06 cerberus kernel: [ 2.891448] [<ffffffffc017934a>] drm_fb_helper_initial_config+0x28a/0x420 [drm_kms_helper]
Oct 18 11:38:06 cerberus kernel: [ 2.891463] [<ffffffffc024c1af>] intel_fbdev_initial_config+0x1f/0x30 [i915_bpo]
Oct 18 11:38:06 cerberus kernel: [ 2.891464] [<ffffffff810a3328>] async_run_entry_fn+0x48/0x150
Oct 18 11:38:06 cerberus kernel: [ 2.891465] [<ffffffff8109a3e5>] process_one_work+0x165/0x480
Oct 18 11:38:06 cerberus kernel: [ 2.891466] [<ffffffff8109a74b>] worker_thread+0x4b/0x4c0
Oct 18 11:38:06 cerberus kernel: [ 2.891467] [<ffffffff8109a700>] ? process_one_work+0x480/0x480
Oct 18 11:38:06 cerberus kernel: [ 2.891468] [<ffffffff810a0928>] kthread+0xd8/0xf0
Oct 18 11:38:06 cerberus kernel: [ 2.891469] [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
Oct 18 11:38:06 cerberus kernel: [ 2.891471] [<ffffffff81831c4f>] ret_from_fork+0x3f/0x70
Oct 18 11:38:06 cerberus kernel: [ 2.891471] [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
Oct 18 11:38:06 cerberus kernel: [ 2.891472] ---[ end trace fa29fd9c77a8df51 ]---
知道什么会触发此消息吗？
提前致谢！