https://bugs.launchpad.net/ubuntu/ source/linux/ bug/1523088
При использовании внешнего монитора возникате такой Warning
[ 6.274877] ------------[ cut here ]------------
[ 6.274996] WARNING: CPU: 3 PID: 63 at drivers/gpu/drm/i915/intel_pm.c:3586 skl_update_other_pipe_wm+0x177/0x180 [i915]
[ 6.275000] WARN_ON(!wm_changed)
[ 6.275087] Modules linked in: hp_wmi sparse_keymap arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul iwlmvm glue_helper ablk_helper cryptd mac80211 pcspkr psmouse serio_raw snd_hda_intel(+) iwlwifi snd_hda_codec snd_hda_core snd_hwdep cfg80211 snd_pcm snd_timer i2c_i801(+) snd soundcore rtsx_pci_ms memstick i915(+) r8169 mii shpchp btusb drm_kms_helper btrtl btbcm uvcvideo btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core rfkill drm videodev media joydev mousedev intel_gtt syscopyarea sysfillrect evdev sysimgblt mei_me fb_sys_fops input_leds mac_hid i2c_algo_bit intel_pch_thermal mei tpm_infineon thermal(+) wmi battery hp_accel(+)
[ 6.275127] led_class lis3lv02d input_polldev hp_wireless video acpi_pad tpm_tis fjes tpm ac processor button sch_fq_codel ip_tables x_tables ext4 crc16 jbd2 mbcache sd_mod hid_generic usbhid hid rtsx_pci_sdmmc mmc_core atkbd libps2 ahci libahci xhci_pci libata xhci_hcd rtsx_pci scsi_mod usbcore usb_common i8042 serio
[ 6.275134] CPU: 3 PID: 63 Comm: kworker/u16:1 Not tainted 4.6.2-1-ARCH #1
[ 6.275137] Hardware name: HP HP ProBook 430 G3/80FF, BIOS N78 Ver. 01.08 02/23/2016
[ 6.275147] Workqueue: events_unbound async_run_entry_fn
[ 6.275156] 0000000000000286 00000000f9b6d946 ffff88014a4f7668 ffffffff812e5492
[ 6.275161] ffff88014a4f76b8 0000000000000000 ffff88014a4f76a8 ffffffff8107a6bb
[ 6.275167] 00000e0200000063 ffff88014aa84000 ffff88014a4f7734 ffff88014a2d9da4
[ 6.275168] Call Trace:
[ 6.275180] [<ffffffff812e5492>] dump_stack+0x63/0x81
[ 6.275186] [<ffffffff8107a6bb>] __warn+0xcb/0xf0
[ 6.275191] [<ffffffff8107a73f>] warn_slowpath_fmt+0x5f/0x80
[ 6.275311] [<ffffffffa0594707>] skl_update_other_pipe_wm+0x177/0x180 [i915]
[ 6.275417] [<ffffffffa0594894>] skl_update_wm+0x184/0x620 [i915]
[ 6.275548] [<ffffffffa0623cbf>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915]
[ 6.275642] [<ffffffffa059843e>] intel_update_watermarks+0x1e/0x30 [i915]
[ 6.275766] [<ffffffffa0606dc2>] haswell_crtc_enable+0x322/0x8b0 [i915]
[ 6.275880] [<ffffffffa05f3e7e>] ? intel_finish_crtc_commit+0xe/0x10 [i915]
[ 6.275895] [<ffffffffa04dc025>] ? drm_atomic_helper_commit_planes_on_crtc+0x155/0x260 [drm_kms_helper]
[ 6.276001] [<ffffffffa0602931>] intel_atomic_commit+0x5f1/0x15f0 [i915]
[ 6.276022] [<ffffffffa03e5ab2>] ? drm_atomic_check_only+0x182/0x600 [drm]
[ 6.276041] [<ffffffffa03e5f67>] drm_atomic_commit+0x37/0x60 [drm]
[ 6.276052] [<ffffffffa04dfe28>] restore_fbdev_mode+0x238/0x260 [drm_kms_helper]
[ 6.276063] [<ffffffffa04e21d4>] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper]
[ 6.276073] [<ffffffffa04e224d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
[ 6.276187] [<ffffffffa061a09a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[ 6.276194] [<ffffffff813527fc>] fbcon_init+0x56c/0x5f0
[ 6.276200] [<ffffffff813d2a0a>] visual_init+0xca/0x130
[ 6.276206] [<ffffffff813d449a>] do_bind_con_driver+0x1da/0x3c0
[ 6.276213] [<ffffffff813d49f7>] do_take_over_console+0x157/0x1c0
[ 6.276219] [<ffffffff813528dc>] do_fbcon_takeover+0x5c/0xb0
[ 6.276225] [<ffffffff81356b3d>] fbcon_event_notify+0x69d/0x7a0
[ 6.276234] [<ffffffff8109a74a>] notifier_call_chain+0x4a/0x70
[ 6.276243] [<ffffffff8109aaf7>] __blocking_notifier_call_chain+0x47/0x60
[ 6.276252] [<ffffffff8109ab26>] blocking_notifier_call_chain+0x16/0x20
[ 6.276259] [<ffffffff8135ca4b>] fb_notifier_call_chain+0x1b/0x20
[ 6.276267] [<ffffffff8135ea16>] register_framebuffer+0x216/0x360
[ 6.276278] [<ffffffffa04e24fe>] drm_fb_helper_initial_config+0x28e/0x430 [drm_kms_helper]
[ 6.276378] [<ffffffffa061ac8f>] intel_fbdev_initial_config+0x1f/0x30 [i915]
[ 6.276384] [<ffffffff8109c1b8>] async_run_entry_fn+0x48/0x150
[ 6.276390] [<ffffffff81093a05>] process_one_work+0x1e5/0x480
[ 6.276395] [<ffffffff81093ce8>] worker_thread+0x48/0x4e0
[ 6.276400] [<ffffffff81093ca0>] ? process_one_work+0x480/0x480
[ 6.276404] [<ffffffff81093ca0>] ? process_one_work+0x480/0x480
[ 6.276411] [<ffffffff81099998>] kthread+0xd8/0xf0
[ 6.276421] [<ffffffff815c7482>] ret_from_fork+0x22/0x40
[ 6.276429] [<ffffffff810998c0>] ? kthread_worker_fn+0x170/0x170
[ 6.276456] ---[ end trace 9241157469795721 ]---
Если просто подключать монитор к ноутбуку, то ошибки нет. В чем может быть проблема?
Archlinux
➜ ~ uname -a
Linux localhost 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun 8 08:40:59 CEST 2016 x86_64 GNU/Linux
➜ ~ pacman -Qi xf86-video-intel
Name : xf86-video-intel
Version : 1:2.99.917+654+ga508b11-1
Description : X.org Intel i810/i830/i915/945G/G965+ video drivers
Architecture : x86_64
URL : https://01.org/linuxgraphics
Licenses : custom
Groups : xorg-drivers xorg
Provides : xf86-video-intel-uxa xf86-video-intel-sna
Depends On : mesa-dri libxvmc pixman xcb-util>=0.3.9
Optional Deps : libxrandr: for intel-virtual-output [installed]
libxinerama: for intel-virtual-output [installed]
libxcursor: for intel-virtual-output [installed]
libxtst: for intel-virtual-output [installed]
libxss: for intel-virtual-output [installed]
Required By : None
Optional For : None
Conflicts With : xorg-server<1.16 X-ABI-VIDEODRV_VERSION<20 X-ABI-VIDEODRV_VERSION>=21 xf86-video-intel-sna xf86-video-intel-uxa xf86-video-i810 xf86-video-intel-legacy
Replaces : xf86-video-intel-uxa xf86-video-intel-sna
Installed Size : 2.21 MiB
Packager : Andreas Radke <andyrtr@archlinux.org>
Build Date : Tue May 17 21:33:06 2016
Install Date : Mon Jun 13 18:07:36 2016
Install Reason : Explicitly installed
Install Script : Yes
Validated By : Signature
Перемещено JB из talks
