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Issue 718381 link

Starred by 3 users
Status: WontFix
Owner:
█ tutankhamen@chromium.org
Last visit 28 days ago
Closed: Sep 2017
Cc:
sontis@chromium.org
█ marc...@chromium.org
█ tutankhamen@chromium.org
tbroch@chromium.org
█ michaeltodd@google.com
█ dbehr@chromium.org
mcasas@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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External display not working

Project Member Reported by jcking@google.com, May 4 2017 
Chrome Version: 58.0.3029.89 (Official Build) (64-bit)
Chrome OS Version: 9334.58.1 (Official Build) stable-channel chell
Chrome OS Platform: HP Chromebook 13
Network info: N/A

Not sure if this is a hardware issue, software issue, or a combination of both. The monitor and cable are known good hardware. Multiple monitors tested.

Steps To Reproduce:
(1) Plug in external monitor using Type-C to DisplayPort
(1) Power Off
(2) Hardware Reset using Refresh + Power
(3) Login
**External display wakes up**
(4) Unplug Type-C cable
**External display goes to sleep**
(5) Plugin Type-C cable
**External display stays asleep**
(6) Power Off
(7) Power On
(8) Login
**External display stays asleep**

Expected Result:
External display is detected and utilized consistently.

Actual Result:
External display is flaky. Sometimes it will be detected, sometimes it will not be. Sometimes it takes up to 30 minutes to be detected. DRM appears to notice it but sets its size to 0x0 (drm_display.cc). DRM will also fail to initialize card1 (drm_device_manager.cc). Everytime you unplug and plug back in the cable to the external display the logs will show that the display controller already exists (screen_manager.cc).

https://cs.chromium.org/chromium/src/ui/ozone/platform/drm/gpu/drm_display.cc?rcl=810fd109a32f93c82837265bc196d932ad5690af&l=105
https://cs.chromium.org/chromium/src/ui/ozone/platform/drm/gpu/drm_device_manager.cc?rcl=810fd109a32f93c82837265bc196d932ad5690af&l=54
https://cs.chromium.org/chromium/src/ui/ozone/platform/drm/gpu/screen_manager.cc?rcl=810fd109a32f93c82837265bc196d932ad5690af&l=114

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)

Sometimes.

What is the impact to the user, and is there a workaround? If so, what is
it?

Cannot use external display.

Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Panel Fitting: Unavailable
Rasterization: Software only. Hardware acceleration disabled
Video Decode: Hardware accelerated
Video Encode: Hardware accelerated
VPx Video Decode: Hardware accelerated
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
Driver Bug Workarounds
clear_uniforms_before_first_program_use
count_all_in_varyings_packing
decode_encode_srgb_for_generatemipmap
disable_discard_framebuffer
msaa_is_slow
scalarize_vec_and_mat_constructor_args
Problems Detected
Chrome OS panel fitting is only supported for Intel IVB and SNB Graphics Controllers
Disabled Features: panel_fitting
Framebuffer discarding causes jumpy scrolling on Mali drivers: 301988
Applied Workarounds: disable_discard_framebuffer
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Mesa drivers in ChromeOS handle varyings without static use incorrectly: 333885
Applied Workarounds: count_all_in_varyings_packing
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565
Applied Workarounds: msaa_is_slow
Disable KHR_blend_equation_advanced until cc shaders are updated: 661715
Decode and Encode before generateMipmap for srgb format textures on Chromeos Intel: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Accelerated rasterization has been disabled, either via blacklist, about:flags or the command line.
Disabled Features: rasterization
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Version Information
Data exported	2017-5-4 10:50:12
Chrome version	Chrome/58.0.3029.89
Operating system	Linux 3.18.0-13980-g7357b88
Software rendering list version	12.20
Driver bug list version	9.36
ANGLE commit id	461d9a3060e3
2D graphics backend	Skia/58 0
Command Line Args	--ppapi-flash-path=/opt/google/chrome/pepper/libpepflashplayer.so --ppapi-flash-version=25.0.0.127 --ui-prioritize-in-gpu-process --use-gl=egl --gpu-sandbox-failures-fatal=yes --enable-logging --log-level=1 --use-cras --enable-wayland-server --arc-availability=installed --user-data-dir=/home/chronos --max-unused-resource-memory-usage-percentage=5 --login-profile=user --has-chromeos-keyboard --default-wallpaper-large=/usr/share/chromeos-assets/wallpaper/oem_large.jpg --default-wallpaper-small=/usr/share/chromeos-assets/wallpaper/oem_small.jpg --default-wallpaper-is-oem --guest-wallpaper-large=/usr/share/chromeos-assets/wallpaper/guest_large.jpg --guest-wallpaper-small=/usr/share/chromeos-assets/wallpaper/guest_small.jpg --enable-prefixed-encrypted-media --enable-consumer-kiosk --enterprise-enrollment-initial-modulus=15 --enterprise-enrollment-modulus-limit=19 --login-manager --first-exec-after-boot --vmodule=screen_locker=2,webui_screen_locker=2,lock_state_controller=2,webui_login_view=2,power_button_observer=2,*/ui/display/manager/chromeos/*=1,*/ash/display/*=1,*/ui/ozone/*=1,*zygote*=1,*plugin*=2,auto_enrollment_controller=1,*chromeos/login/*=1,*arc/*=1
Driver Information
Initialization time	21
In-process GPU	false
Passthrough Command Decoder	false
Sandboxed	true
GPU0	VENDOR = 0x8086, DEVICE= 0x191e
Optimus	false
Optimus	false
AMD switchable	false
Driver vendor	Mesa
Driver version	17.1.0
Driver date	
Pixel shader version	3.20
Vertex shader version	3.20
Max. MSAA samples	16
Machine model name	
Machine model version	
GL_VENDOR	Intel Open Source Technology Center
GL_RENDERER	Mesa DRI Intel(R) HD Graphics 515 (Skylake GT2)
GL_VERSION	OpenGL ES 3.2 Mesa 17.1.0-devel (git-9baf1ff)
GL_EXTENSIONS	GL_EXT_blend_minmax GL_EXT_multi_draw_arrays GL_EXT_texture_filter_anisotropic GL_EXT_texture_compression_dxt1 GL_EXT_texture_format_BGRA8888 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_mapbuffer GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_stencil8 GL_OES_texture_3D GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_half_float GL_EXT_texture_sRGB_decode GL_OES_EGL_image GL_OES_depth_texture GL_OES_packed_depth_stencil GL_EXT_texture_type_2_10_10_10_REV GL_OES_get_program_binary GL_APPLE_texture_max_level GL_EXT_discard_framebuffer GL_EXT_read_format_bgra GL_NV_fbo_color_attachments GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_vertex_array_object GL_OES_viewport_array GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_EXT_robustness GL_EXT_texture_rg GL_EXT_unpack_subimage GL_NV_draw_buffers GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil GL_EXT_draw_buffers GL_EXT_map_buffer_range GL_KHR_debug GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_OES_depth_texture_cube_map GL_OES_surfaceless_context GL_EXT_color_buffer_float GL_EXT_separate_shader_objects GL_EXT_shader_framebuffer_fetch GL_EXT_shader_integer_mix GL_EXT_tessellation_point_size GL_EXT_tessellation_shader GL_INTEL_conservative_rasterization GL_ANDROID_extension_pack_es31a GL_EXT_copy_image GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_gpu_shader5 GL_EXT_polygon_offset_clamp GL_EXT_primitive_bounding_box GL_EXT_shader_io_blocks GL_EXT_texture_border_clamp GL_EXT_texture_buffer GL_EXT_texture_cube_map_array GL_KHR_context_flush_control GL_KHR_robust_buffer_access_behavior GL_NV_image_formats GL_OES_copy_image GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_gpu_shader5 GL_OES_primitive_bounding_box GL_OES_sample_shading GL_OES_sample_variables GL_OES_shader_io_blocks GL_OES_shader_multisample_interpolation GL_OES_tessellation_point_size GL_OES_tessellation_shader GL_OES_texture_border_clamp GL_OES_texture_buffer GL_OES_texture_cube_map_array GL_OES_texture_stencil8 GL_OES_texture_storage_multisample_2d_array GL_EXT_blend_func_extended GL_EXT_buffer_storage GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_EXT_shader_samples_identical GL_KHR_texture_compression_astc_sliced_3d GL_OES_geometry_point_size GL_OES_geometry_shader GL_OES_shader_image_atomic GL_EXT_clip_cull_distance GL_MESA_shader_integer_functions
Disabled Extensions	GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent
Window system binding vendor	Mesa Project
Window system binding version	1.4 (DRI2)
Window system binding extensions	EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image_base EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export
Direct rendering	Yes
Reset notification strategy	0x8252
GPU process crash count	0
Compositor Information
Tile Update Mode	One-copy
Partial Raster	Enabled
GpuMemoryBuffers Status
ATC	Software only
ATCIA	Software only
DXT1	Software only
DXT5	Software only
ETC1	Software only
R_8	Software only
RG_88	Software only
BGR_565	GPU_READ
RGBA_4444	Software only
RGBX_8888	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE
RGBA_8888	GPU_READ, SCANOUT_CPU_READ_WRITE
BGRX_8888	GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE
BGRA_8888	GPU_READ, SCANOUT_CPU_READ_WRITE
YVU_420	GPU_READ
YUV_420_BIPLANAR	Software only
UYVY_422	Software only

Backtraces:

2017-05-04T10:38:21.802070+01:00 WARNING kernel: [    7.815436] ------------[ cut here ]------------
2017-05-04T10:38:21.802078+01:00 WARNING kernel: [    7.815458] WARNING: CPU: 1 PID: 0 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/net/wireless/iwl7000/mac80211/rate.c:311 __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]()
2017-05-04T10:38:21.802080+01:00 WARNING kernel: [    7.815471] no supported rates (0xe0) in rate_mask 0x7 with flags 0x0
2017-05-04T10:38:21.802081+01:00 WARNING kernel: [    7.815477] Modules linked in: ip6t_REJECT nf_reject_ipv6 snd_soc_skl_nau88l25_ssm4567 snd_soc_hdac_hdmi snd_soc_dmic snd_soc_skl btusb btrtl btbcm snd_soc_skl_ipc btintel snd_soc_sst_acpi snd_soc_sst_ipc snd_soc_sst_dsp xt_mark bluetooth memconsole_x86_legacy memconsole bridge stp snd_hda_ext_core llc snd_hda_core snd_soc_nau8825 snd_soc_ssm4567 fuse zram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device ip6table_filter iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo joydev videobuf2_vmalloc videobuf2_memops videobuf2_core
2017-05-04T10:38:21.802082+01:00 WARNING kernel: [    7.815555] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.18.0-13980-g7357b88 #1
2017-05-04T10:38:21.802083+01:00 WARNING kernel: [    7.815561] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:38:21.802084+01:00 WARNING kernel: [    7.815568]  0000000000000000 6f63f3353adceafc ffff88047ec83778 ffffffffb50a3630
2017-05-04T10:38:21.802084+01:00 WARNING kernel: [    7.815578]  0000000000000000 ffff88047ec837d0 ffff88047ec837b8 ffffffffb4a63bca
2017-05-04T10:38:21.802085+01:00 WARNING kernel: [    7.815587]  0000000000000000 ffffffffc014d94b ffff8804407c2028 ffff880468ff0700
2017-05-04T10:38:21.802086+01:00 WARNING kernel: [    7.815597] Call Trace:
2017-05-04T10:38:21.802087+01:00 WARNING kernel: [    7.815600]  <IRQ>  [<ffffffffb50a3630>] dump_stack+0x4e/0x71
2017-05-04T10:38:21.802088+01:00 WARNING kernel: [    7.815613]  [<ffffffffb4a63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:38:21.802088+01:00 WARNING kernel: [    7.815626]  [<ffffffffc014d94b>] ? __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]
2017-05-04T10:38:21.802089+01:00 WARNING kernel: [    7.815636]  [<ffffffffb4a63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:38:21.802090+01:00 WARNING kernel: [    7.815646]  [<ffffffffc014d94b>] __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]
2017-05-04T10:38:21.802091+01:00 WARNING kernel: [    7.815658]  [<ffffffffc014dcd7>] __iwl7000_ieee80211_get_tx_rates+0x284/0x4cd [iwl7000_mac80211]
2017-05-04T10:38:21.802092+01:00 WARNING kernel: [    7.815671]  [<ffffffffc014e44d>] rate_control_get_rate+0x11b/0x12a [iwl7000_mac80211]
2017-05-04T10:38:21.802092+01:00 WARNING kernel: [    7.815684]  [<ffffffffc015aa6c>] __iwl7000_ieee80211_proberesp_get+0x433/0x17cb [iwl7000_mac80211]
2017-05-04T10:38:21.802093+01:00 WARNING kernel: [    7.815698]  [<ffffffffc015c5ac>] __iwl7000_ieee80211_probereq_get+0x49d/0x12e4 [iwl7000_mac80211]
2017-05-04T10:38:21.802094+01:00 WARNING kernel: [    7.815707]  [<ffffffffb50a81b0>] ? _raw_spin_unlock+0xe/0x21
2017-05-04T10:38:21.802095+01:00 WARNING kernel: [    7.815715]  [<ffffffffb4e97772>] ? prepare_transfer+0xdf/0xf2
2017-05-04T10:38:21.802095+01:00 WARNING kernel: [    7.815726]  [<ffffffffc015e4e7>] __ieee80211_subif_start_xmit+0xa4/0x1ab [iwl7000_mac80211]
2017-05-04T10:38:21.802096+01:00 WARNING kernel: [    7.815737]  [<ffffffffc015e5fe>] ieee80211_subif_start_xmit+0x10/0x14 [iwl7000_mac80211]
2017-05-04T10:38:21.802097+01:00 WARNING kernel: [    7.815746]  [<ffffffffb4fbf9a8>] dev_hard_start_xmit+0x273/0x340
2017-05-04T10:38:21.802098+01:00 WARNING kernel: [    7.815754]  [<ffffffffb4fda2dd>] sch_direct_xmit+0xad/0x1d8
2017-05-04T10:38:21.802099+01:00 WARNING kernel: [    7.815761]  [<ffffffffb4fbfce8>] __dev_queue_xmit+0x273/0x483
2017-05-04T10:38:21.802100+01:00 WARNING kernel: [    7.815768]  [<ffffffffb4fbff08>] dev_queue_xmit+0x10/0x12
2017-05-04T10:38:21.802101+01:00 WARNING kernel: [    7.815775]  [<ffffffffb4fca81f>] neigh_resolve_output+0x174/0x192
2017-05-04T10:38:21.802102+01:00 WARNING kernel: [    7.815782]  [<ffffffffb5066576>] ip6_finish_output2+0x36a/0x3e1
2017-05-04T10:38:21.802102+01:00 WARNING kernel: [    7.815788]  [<ffffffffb5068c4e>] ip6_finish_output+0x6a/0x6f
2017-05-04T10:38:21.802103+01:00 WARNING kernel: [    7.815794]  [<ffffffffb5068cbb>] ip6_output+0x68/0xa5
2017-05-04T10:38:21.802104+01:00 WARNING kernel: [    7.815801]  [<ffffffffb508136f>] dst_output+0x16/0x18
2017-05-04T10:38:21.802105+01:00 WARNING kernel: [    7.815808]  [<ffffffffb5081dca>] mld_sendpack+0x186/0x28d
2017-05-04T10:38:21.802106+01:00 WARNING kernel: [    7.815815]  [<ffffffffb5083b07>] mld_ifc_timer_expire+0x269/0x2c8
2017-05-04T10:38:21.802107+01:00 WARNING kernel: [    7.815823]  [<ffffffffb508389e>] ? igmp6_group_dropped+0x259/0x259
2017-05-04T10:38:21.802108+01:00 WARNING kernel: [    7.815831]  [<ffffffffb4aaec05>] call_timer_fn+0x68/0x105
2017-05-04T10:38:21.802109+01:00 WARNING kernel: [    7.815837]  [<ffffffffb508389e>] ? igmp6_group_dropped+0x259/0x259
2017-05-04T10:38:21.802110+01:00 WARNING kernel: [    7.815844]  [<ffffffffb4aaf5b4>] run_timer_softirq+0x202/0x242
2017-05-04T10:38:21.802111+01:00 WARNING kernel: [    7.815851]  [<ffffffffb50ab260>] __do_softirq+0x120/0x26d
2017-05-04T10:38:21.802112+01:00 WARNING kernel: [    7.815858]  [<ffffffffb4a67405>] irq_exit+0x3f/0x86
2017-05-04T10:38:21.802113+01:00 WARNING kernel: [    7.815864]  [<ffffffffb50ab07a>] smp_apic_timer_interrupt+0x36/0x43
2017-05-04T10:38:21.802114+01:00 WARNING kernel: [    7.815870]  [<ffffffffb50a966a>] apic_timer_interrupt+0x6a/0x70
2017-05-04T10:38:21.802115+01:00 WARNING kernel: [    7.815876]  <EOI>  [<ffffffffb4a0a418>] ? native_sched_clock+0x3a/0x3c
2017-05-04T10:38:21.802116+01:00 WARNING kernel: [    7.815887]  [<ffffffffb4f236bf>] ? cpuidle_enter_state+0x8d/0xdd
2017-05-04T10:38:21.802116+01:00 WARNING kernel: [    7.815894]  [<ffffffffb4f236bb>] ? cpuidle_enter_state+0x89/0xdd
2017-05-04T10:38:21.802117+01:00 WARNING kernel: [    7.815901]  [<ffffffffb4f2373b>] cpuidle_enter+0x17/0x19
2017-05-04T10:38:21.802118+01:00 WARNING kernel: [    7.815908]  [<ffffffffb4a96c45>] cpu_startup_entry+0x21a/0x2db
2017-05-04T10:38:21.802119+01:00 WARNING kernel: [    7.815915]  [<ffffffffb4a2acf0>] start_secondary+0x16b/0x198
2017-05-04T10:38:21.802120+01:00 WARNING kernel: [    7.815921] ---[ end trace 267e74ae422cdae6 ]---

2017-05-04T10:32:18.804878+01:00 WARNING kernel: [   21.838296] ------------[ cut here ]------------
2017-05-04T10:32:18.804888+01:00 WARNING kernel: [   21.838309] WARNING: CPU: 3 PID: 1280 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/gpu/drm/i915/intel_pm.c:3729 skl_update_other_pipe_wm+0x161/0x1bc()
2017-05-04T10:32:18.804889+01:00 WARNING kernel: [   21.838318] WARN_ON(!wm_changed)
2017-05-04T10:32:18.805887+01:00 WARNING kernel: [   21.838321] Modules linked in: uinput rfcomm ip6t_REJECT nf_reject_ipv6 snd_soc_skl_nau88l25_ssm4567 ipt_MASQUERADE snd_soc_dmic snd_soc_hdac_hdmi snd_soc_skl snd_soc_skl_ipc btusb snd_soc_sst_acpi nf_nat_masquerade_ipv4 btrtl btbcm btintel iptable_nat nf_nat_ipv4 nf_nat snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core bluetooth snd_hda_core memconsole_x86_legacy memconsole snd_soc_nau8825 snd_soc_ssm4567 xt_mark bridge stp llc fuse zram ip6table_filter snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev
2017-05-04T10:32:18.805894+01:00 WARNING kernel: [   21.838419] CPU: 3 PID: 1280 Comm: DrmThread Tainted: G        W      3.18.0-13980-g7357b88 #1
2017-05-04T10:32:18.805895+01:00 WARNING kernel: [   21.838426] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:32:18.805895+01:00 WARNING kernel: [   21.838432]  0000000000000000 0000000006c1012f ffff880463f63618 ffffffffb72a3630
2017-05-04T10:32:18.805900+01:00 WARNING kernel: [   21.838445]  0000000000000000 ffff880463f63670 ffff880463f63658 ffffffffb6c63bca
2017-05-04T10:32:18.805900+01:00 WARNING kernel: [   21.838455]  ffff880463f63809 ffffffffb6f65c14 ffff88046b589000 ffff88046c3a9fe8
2017-05-04T10:32:18.805901+01:00 WARNING kernel: [   21.838463] Call Trace:
2017-05-04T10:32:18.805902+01:00 WARNING kernel: [   21.838470]  [<ffffffffb72a3630>] dump_stack+0x4e/0x71
2017-05-04T10:32:18.805903+01:00 WARNING kernel: [   21.838477]  [<ffffffffb6c63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:32:18.805903+01:00 WARNING kernel: [   21.838484]  [<ffffffffb6f65c14>] ? skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:18.805904+01:00 WARNING kernel: [   21.838491]  [<ffffffffb6c63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:32:18.805905+01:00 WARNING kernel: [   21.838497]  [<ffffffffb6f65c14>] skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:18.805905+01:00 WARNING kernel: [   21.838504]  [<ffffffffb6f65e9c>] skl_update_wm+0x22d/0x773
2017-05-04T10:32:18.805906+01:00 WARNING kernel: [   21.838512]  [<ffffffffb6f67171>] intel_update_watermarks+0x1e/0x20
2017-05-04T10:32:18.805907+01:00 WARNING kernel: [   21.838519]  [<ffffffffb6faf91e>] intel_begin_crtc_commit+0x23/0x90
2017-05-04T10:32:18.805908+01:00 WARNING kernel: [   21.838526]  [<ffffffffb6f3a6b9>] drm_atomic_helper_commit_planes_on_crtc+0x56/0x182
2017-05-04T10:32:18.805908+01:00 WARNING kernel: [   21.838534]  [<ffffffffb6fc40c0>] intel_atomic_commit+0x492/0x69e
2017-05-04T10:32:18.805909+01:00 WARNING kernel: [   21.838541]  [<ffffffffb6f5709e>] ? drm_atomic_check_only+0x24d/0x4de
2017-05-04T10:32:18.805909+01:00 WARNING kernel: [   21.838547]  [<ffffffffb6f5737c>] drm_atomic_commit+0x4d/0x52
2017-05-04T10:32:18.805910+01:00 WARNING kernel: [   21.838553]  [<ffffffffb6f399ad>] drm_atomic_helper_update_plane+0xcb/0x11a
2017-05-04T10:32:18.805911+01:00 WARNING kernel: [   21.838560]  [<ffffffffb6f4cf3f>] __setplane_internal+0x26f/0x2c9
2017-05-04T10:32:18.805911+01:00 WARNING kernel: [   21.838567]  [<ffffffffb6f4d0f1>] drm_mode_cursor_universal+0x158/0x1b8
2017-05-04T10:32:18.805912+01:00 WARNING kernel: [   21.838574]  [<ffffffffb6f4d1fb>] drm_mode_cursor_common+0xaa/0x149
2017-05-04T10:32:18.805913+01:00 WARNING kernel: [   21.838580]  [<ffffffffb6e234cd>] ? avc_has_extended_perms+0x28b/0x37f
2017-05-04T10:32:18.805913+01:00 WARNING kernel: [   21.838587]  [<ffffffffb6f4d92a>] drm_mode_cursor_ioctl+0x46/0x5c
2017-05-04T10:32:18.805914+01:00 WARNING kernel: [   21.838593]  [<ffffffffb6f40e11>] drm_ioctl+0x3d3/0x451
2017-05-04T10:32:18.805915+01:00 WARNING kernel: [   21.838599]  [<ffffffffb6f4d8e4>] ? drm_mode_setcrtc+0x4f1/0x4f1
2017-05-04T10:32:18.805916+01:00 WARNING kernel: [   21.838606]  [<ffffffffb6cdf9ba>] ? __seccomp_phase1_filter+0x2f/0x1bc
2017-05-04T10:32:18.805916+01:00 WARNING kernel: [   21.838617]  [<ffffffffb6d61aae>] do_vfs_ioctl+0x399/0x460
2017-05-04T10:32:18.805917+01:00 WARNING kernel: [   21.838623]  [<ffffffffb6d5207e>] ? fsnotify_access+0x57/0x5f
2017-05-04T10:32:18.805918+01:00 WARNING kernel: [   21.838629]  [<ffffffffb6d61bcf>] SyS_ioctl+0x5a/0x7f
2017-05-04T10:32:18.805919+01:00 WARNING kernel: [   21.838634]  [<ffffffffb72a889c>] system_call_fastpath+0x1c/0x21
2017-05-04T10:32:18.805920+01:00 WARNING kernel: [   21.838742] ---[ end trace 1ebb2fbc9f79d2ca ]---

2017-05-04T10:32:04.120459+01:00 WARNING kernel: [    7.869369] ------------[ cut here ]------------
2017-05-04T10:32:04.120468+01:00 WARNING kernel: [    7.869391] WARNING: CPU: 0 PID: 2761 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/net/wireless/iwl7000/mac80211/rate.c:311 __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]()
2017-05-04T10:32:04.120470+01:00 WARNING kernel: [    7.869406] no supported rates (0xe0) in rate_mask 0x7 with flags 0x0
2017-05-04T10:32:04.120586+01:00 WARNING kernel: [    7.869412] Modules linked in: uinput rfcomm ip6t_REJECT nf_reject_ipv6 snd_soc_skl_nau88l25_ssm4567 ipt_MASQUERADE snd_soc_dmic snd_soc_hdac_hdmi snd_soc_skl snd_soc_skl_ipc btusb snd_soc_sst_acpi nf_nat_masquerade_ipv4 btrtl btbcm btintel iptable_nat nf_nat_ipv4 nf_nat snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core bluetooth snd_hda_core memconsole_x86_legacy memconsole snd_soc_nau8825 snd_soc_ssm4567 xt_mark bridge stp llc fuse zram ip6table_filter snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev
2017-05-04T10:32:04.120590+01:00 WARNING kernel: [    7.869505] CPU: 0 PID: 2761 Comm: crda Tainted: G        W      3.18.0-13980-g7357b88 #1
2017-05-04T10:32:04.120591+01:00 WARNING kernel: [    7.869515] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:32:04.120592+01:00 WARNING kernel: [    7.869524]  0000000000000000 000000002555bb84 ffff88047ec03778 ffffffffb72a3630
2017-05-04T10:32:04.120593+01:00 WARNING kernel: [    7.869534]  0000000000000000 ffff88047ec037d0 ffff88047ec037b8 ffffffffb6c63bca
2017-05-04T10:32:04.120594+01:00 WARNING kernel: [    7.869545]  ffffffffb72a81b0 ffffffffc02eb94b ffff88046453f328 ffff8804645f8700
2017-05-04T10:32:04.120594+01:00 WARNING kernel: [    7.869555] Call Trace:
2017-05-04T10:32:04.120596+01:00 WARNING kernel: [    7.869559]  <IRQ>  [<ffffffffb72a3630>] dump_stack+0x4e/0x71
2017-05-04T10:32:04.120596+01:00 WARNING kernel: [    7.869573]  [<ffffffffb6c63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:32:04.120599+01:00 WARNING kernel: [    7.869581]  [<ffffffffb72a81b0>] ? _raw_spin_unlock+0xe/0x21
2017-05-04T10:32:04.120600+01:00 WARNING kernel: [    7.869594]  [<ffffffffc02eb94b>] ? __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]
2017-05-04T10:32:04.120601+01:00 WARNING kernel: [    7.869604]  [<ffffffffb6c63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:32:04.120602+01:00 WARNING kernel: [    7.869612]  [<ffffffffb7097772>] ? prepare_transfer+0xdf/0xf2
2017-05-04T10:32:04.120603+01:00 WARNING kernel: [    7.869624]  [<ffffffffc02eb94b>] __iwl7000_ieee80211_rate_control_register+0x19b/0x1c8 [iwl7000_mac80211]
2017-05-04T10:32:04.120604+01:00 WARNING kernel: [    7.869637]  [<ffffffffc02ebcd7>] __iwl7000_ieee80211_get_tx_rates+0x284/0x4cd [iwl7000_mac80211]
2017-05-04T10:32:04.120605+01:00 WARNING kernel: [    7.869651]  [<ffffffffc02ec44d>] rate_control_get_rate+0x11b/0x12a [iwl7000_mac80211]
2017-05-04T10:32:04.120605+01:00 WARNING kernel: [    7.869668]  [<ffffffffc02f8a6c>] __iwl7000_ieee80211_proberesp_get+0x433/0x17cb [iwl7000_mac80211]
2017-05-04T10:32:04.120606+01:00 WARNING kernel: [    7.869684]  [<ffffffffc02fa5ac>] __iwl7000_ieee80211_probereq_get+0x49d/0x12e4 [iwl7000_mac80211]
2017-05-04T10:32:04.120607+01:00 WARNING kernel: [    7.869695]  [<ffffffffb72a81b0>] ? _raw_spin_unlock+0xe/0x21
2017-05-04T10:32:04.120608+01:00 WARNING kernel: [    7.869711]  [<ffffffffc02fc4e7>] __ieee80211_subif_start_xmit+0xa4/0x1ab [iwl7000_mac80211]
2017-05-04T10:32:04.120609+01:00 WARNING kernel: [    7.869727]  [<ffffffffc02fc5fe>] ieee80211_subif_start_xmit+0x10/0x14 [iwl7000_mac80211]
2017-05-04T10:32:04.120610+01:00 WARNING kernel: [    7.869737]  [<ffffffffb71bf9a8>] dev_hard_start_xmit+0x273/0x340
2017-05-04T10:32:04.120611+01:00 WARNING kernel: [    7.869745]  [<ffffffffb71da2dd>] sch_direct_xmit+0xad/0x1d8
2017-05-04T10:32:04.120612+01:00 WARNING kernel: [    7.869753]  [<ffffffffb71bfce8>] __dev_queue_xmit+0x273/0x483
2017-05-04T10:32:04.120613+01:00 WARNING kernel: [    7.869760]  [<ffffffffb71bff08>] dev_queue_xmit+0x10/0x12
2017-05-04T10:32:04.120614+01:00 WARNING kernel: [    7.869768]  [<ffffffffb71ca81f>] neigh_resolve_output+0x174/0x192
2017-05-04T10:32:04.120615+01:00 WARNING kernel: [    7.869776]  [<ffffffffb7266576>] ip6_finish_output2+0x36a/0x3e1
2017-05-04T10:32:04.120615+01:00 WARNING kernel: [    7.869783]  [<ffffffffb7268c4e>] ip6_finish_output+0x6a/0x6f
2017-05-04T10:32:04.120616+01:00 WARNING kernel: [    7.869790]  [<ffffffffb7268cbb>] ip6_output+0x68/0xa5
2017-05-04T10:32:04.120617+01:00 WARNING kernel: [    7.869797]  [<ffffffffb728136f>] dst_output+0x16/0x18
2017-05-04T10:32:04.120618+01:00 WARNING kernel: [    7.869805]  [<ffffffffb7281dca>] mld_sendpack+0x186/0x28d
2017-05-04T10:32:04.120619+01:00 WARNING kernel: [    7.869813]  [<ffffffffb7283b07>] mld_ifc_timer_expire+0x269/0x2c8
2017-05-04T10:32:04.120620+01:00 WARNING kernel: [    7.869821]  [<ffffffffb728389e>] ? igmp6_group_dropped+0x259/0x259
2017-05-04T10:32:04.120621+01:00 WARNING kernel: [    7.869829]  [<ffffffffb6caec05>] call_timer_fn+0x68/0x105
2017-05-04T10:32:04.120621+01:00 WARNING kernel: [    7.869836]  [<ffffffffb728389e>] ? igmp6_group_dropped+0x259/0x259
2017-05-04T10:32:04.120622+01:00 WARNING kernel: [    7.869844]  [<ffffffffb6caf5b4>] run_timer_softirq+0x202/0x242
2017-05-04T10:32:04.120623+01:00 WARNING kernel: [    7.869857]  [<ffffffffb72ab260>] __do_softirq+0x120/0x26d
2017-05-04T10:32:04.120624+01:00 WARNING kernel: [    7.869864]  [<ffffffffb6c67405>] irq_exit+0x3f/0x86
2017-05-04T10:32:04.120625+01:00 WARNING kernel: [    7.869871]  [<ffffffffb72ab07a>] smp_apic_timer_interrupt+0x36/0x43
2017-05-04T10:32:04.120626+01:00 WARNING kernel: [    7.869878]  [<ffffffffb72a966a>] apic_timer_interrupt+0x6a/0x70
2017-05-04T10:32:04.120627+01:00 WARNING kernel: [    7.869884]  <EOI> 
2017-05-04T10:32:04.120627+01:00 WARNING kernel: [    7.869888] ---[ end trace 1ebb2fbc9f79d2c9 ]---

2017-05-04T10:32:02.462034+01:00 WARNING kernel: [    5.474609] ------------[ cut here ]------------
2017-05-04T10:32:02.462044+01:00 WARNING kernel: [    5.474623] WARNING: CPU: 1 PID: 1280 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/gpu/drm/i915/intel_pm.c:3729 skl_update_other_pipe_wm+0x161/0x1bc()
2017-05-04T10:32:02.462046+01:00 WARNING kernel: [    5.474634] WARN_ON(!wm_changed)
2017-05-04T10:32:02.462047+01:00 WARNING kernel: [    5.474638] Modules linked in: ip6table_filter snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev
2017-05-04T10:32:02.462054+01:00 WARNING kernel: [    5.474673] CPU: 1 PID: 1280 Comm: DrmThread Not tainted 3.18.0-13980-g7357b88 #1
2017-05-04T10:32:02.462055+01:00 WARNING kernel: [    5.474679] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:32:02.462056+01:00 WARNING kernel: [    5.474686]  0000000000000000 0000000006c1012f ffff880463f63738 ffffffffb72a3630
2017-05-04T10:32:02.462057+01:00 WARNING kernel: [    5.474696]  0000000000000000 ffff880463f63790 ffff880463f63778 ffffffffb6c63bca
2017-05-04T10:32:02.462058+01:00 WARNING kernel: [    5.474706]  ffff880463f63929 ffffffffb6f65c14 ffff88046b588000 ffff88046c3a9fe8
2017-05-04T10:32:02.462059+01:00 WARNING kernel: [    5.474716] Call Trace:
2017-05-04T10:32:02.462060+01:00 WARNING kernel: [    5.474724]  [<ffffffffb72a3630>] dump_stack+0x4e/0x71
2017-05-04T10:32:02.462061+01:00 WARNING kernel: [    5.474731]  [<ffffffffb6c63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:32:02.462061+01:00 WARNING kernel: [    5.474739]  [<ffffffffb6f65c14>] ? skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.462062+01:00 WARNING kernel: [    5.474746]  [<ffffffffb6c63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:32:02.462063+01:00 WARNING kernel: [    5.474753]  [<ffffffffb6f65c14>] skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.462064+01:00 WARNING kernel: [    5.474762]  [<ffffffffb6f65e9c>] skl_update_wm+0x22d/0x773
2017-05-04T10:32:02.462065+01:00 WARNING kernel: [    5.474768]  [<ffffffffb6c96741>] ? finish_wait+0x64/0x64
2017-05-04T10:32:02.462066+01:00 WARNING kernel: [    5.474777]  [<ffffffffb6f67171>] intel_update_watermarks+0x1e/0x20
2017-05-04T10:32:02.462066+01:00 WARNING kernel: [    5.474789]  [<ffffffffb6fbf358>] haswell_crtc_enable+0x470/0x855
2017-05-04T10:32:02.462067+01:00 WARNING kernel: [    5.474797]  [<ffffffffb6fc40b8>] intel_atomic_commit+0x48a/0x69e
2017-05-04T10:32:02.462068+01:00 WARNING kernel: [    5.474805]  [<ffffffffb6f5737c>] drm_atomic_commit+0x4d/0x52
2017-05-04T10:32:02.462069+01:00 WARNING kernel: [    5.474813]  [<ffffffffb6f3bde8>] drm_atomic_helper_set_config+0x52/0xa0
2017-05-04T10:32:02.462069+01:00 WARNING kernel: [    5.474821]  [<ffffffffb6f4a01b>] drm_mode_set_config_internal+0x5f/0xfa
2017-05-04T10:32:02.462070+01:00 WARNING kernel: [    5.474829]  [<ffffffffb6f4d857>] drm_mode_setcrtc+0x464/0x4f1
2017-05-04T10:32:02.462071+01:00 WARNING kernel: [    5.474836]  [<ffffffffb6f40e11>] drm_ioctl+0x3d3/0x451
2017-05-04T10:32:02.462072+01:00 WARNING kernel: [    5.474843]  [<ffffffffb6f4d3f3>] ? drm_mode_setplane+0x159/0x159
2017-05-04T10:32:02.462072+01:00 WARNING kernel: [    5.474851]  [<ffffffffb6d61aae>] do_vfs_ioctl+0x399/0x460
2017-05-04T10:32:02.462073+01:00 WARNING kernel: [    5.474857]  [<ffffffffb6d54f42>] ? __sb_end_write+0x2e/0x5d
2017-05-04T10:32:02.462074+01:00 WARNING kernel: [    5.474864]  [<ffffffffb6d61bcf>] SyS_ioctl+0x5a/0x7f
2017-05-04T10:32:02.462075+01:00 WARNING kernel: [    5.474870]  [<ffffffffb72a889c>] system_call_fastpath+0x1c/0x21
2017-05-04T10:32:02.462076+01:00 WARNING kernel: [    5.474876] ---[ end trace 1ebb2fbc9f79d2c6 ]---

2017-05-04T10:32:02.475062+01:00 WARNING kernel: [    5.488093] ------------[ cut here ]------------
2017-05-04T10:32:02.475069+01:00 WARNING kernel: [    5.488102] WARNING: CPU: 1 PID: 1280 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/gpu/drm/i915/intel_pm.c:3729 skl_update_other_pipe_wm+0x161/0x1bc()
2017-05-04T10:32:02.475070+01:00 WARNING kernel: [    5.488112] WARN_ON(!wm_changed)
2017-05-04T10:32:02.475071+01:00 WARNING kernel: [    5.488116] Modules linked in: ip6table_filter snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev
2017-05-04T10:32:02.475073+01:00 WARNING kernel: [    5.488148] CPU: 1 PID: 1280 Comm: DrmThread Tainted: G        W      3.18.0-13980-g7357b88 #1
2017-05-04T10:32:02.475116+01:00 WARNING kernel: [    5.488155] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:32:02.475117+01:00 WARNING kernel: [    5.488162]  0000000000000000 0000000006c1012f ffff880463f63728 ffffffffb72a3630
2017-05-04T10:32:02.475118+01:00 WARNING kernel: [    5.488172]  0000000000000000 ffff880463f63780 ffff880463f63768 ffffffffb6c63bca
2017-05-04T10:32:02.475119+01:00 WARNING kernel: [    5.488181]  ffff880463f63919 ffffffffb6f65c14 ffff88046b588000 ffff88046c3a9fe8
2017-05-04T10:32:02.475120+01:00 WARNING kernel: [    5.488191] Call Trace:
2017-05-04T10:32:02.475121+01:00 WARNING kernel: [    5.488196]  [<ffffffffb72a3630>] dump_stack+0x4e/0x71
2017-05-04T10:32:02.475121+01:00 WARNING kernel: [    5.488203]  [<ffffffffb6c63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:32:02.475122+01:00 WARNING kernel: [    5.488210]  [<ffffffffb6f65c14>] ? skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.475123+01:00 WARNING kernel: [    5.488218]  [<ffffffffb6c63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:32:02.475124+01:00 WARNING kernel: [    5.488225]  [<ffffffffb6f65c14>] skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.475124+01:00 WARNING kernel: [    5.488233]  [<ffffffffb6f65e9c>] skl_update_wm+0x22d/0x773
2017-05-04T10:32:02.475133+01:00 WARNING kernel: [    5.488240]  [<ffffffffb6f663a0>] ? skl_update_wm+0x731/0x773
2017-05-04T10:32:02.475135+01:00 WARNING kernel: [    5.488246]  [<ffffffffb6c96741>] ? finish_wait+0x64/0x64
2017-05-04T10:32:02.475135+01:00 WARNING kernel: [    5.488254]  [<ffffffffb6f67171>] intel_update_watermarks+0x1e/0x20
2017-05-04T10:32:02.475136+01:00 WARNING kernel: [    5.488261]  [<ffffffffb6faf91e>] intel_begin_crtc_commit+0x23/0x90
2017-05-04T10:32:02.475137+01:00 WARNING kernel: [    5.488269]  [<ffffffffb6f3a6b9>] drm_atomic_helper_commit_planes_on_crtc+0x56/0x182
2017-05-04T10:32:02.475138+01:00 WARNING kernel: [    5.488277]  [<ffffffffb6fc40c0>] intel_atomic_commit+0x492/0x69e
2017-05-04T10:32:02.475139+01:00 WARNING kernel: [    5.488285]  [<ffffffffb6f5737c>] drm_atomic_commit+0x4d/0x52
2017-05-04T10:32:02.475140+01:00 WARNING kernel: [    5.488292]  [<ffffffffb6f3bde8>] drm_atomic_helper_set_config+0x52/0xa0
2017-05-04T10:32:02.475141+01:00 WARNING kernel: [    5.488299]  [<ffffffffb6f4a01b>] drm_mode_set_config_internal+0x5f/0xfa
2017-05-04T10:32:02.475142+01:00 WARNING kernel: [    5.488307]  [<ffffffffb6f4d857>] drm_mode_setcrtc+0x464/0x4f1
2017-05-04T10:32:02.475142+01:00 WARNING kernel: [    5.488314]  [<ffffffffb6f40e11>] drm_ioctl+0x3d3/0x451
2017-05-04T10:32:02.475143+01:00 WARNING kernel: [    5.488321]  [<ffffffffb6f4d3f3>] ? drm_mode_setplane+0x159/0x159
2017-05-04T10:32:02.475144+01:00 WARNING kernel: [    5.488329]  [<ffffffffb6d61aae>] do_vfs_ioctl+0x399/0x460
2017-05-04T10:32:02.475145+01:00 WARNING kernel: [    5.488343]  [<ffffffffb6d54f42>] ? __sb_end_write+0x2e/0x5d
2017-05-04T10:32:02.475146+01:00 WARNING kernel: [    5.488350]  [<ffffffffb6d61bcf>] SyS_ioctl+0x5a/0x7f
2017-05-04T10:32:02.475146+01:00 WARNING kernel: [    5.488356]  [<ffffffffb72a889c>] system_call_fastpath+0x1c/0x21
2017-05-04T10:32:02.475150+01:00 WARNING kernel: [    5.488405] ---[ end trace 1ebb2fbc9f79d2c7 ]---

2017-05-04T10:32:02.492062+01:00 WARNING kernel: [    5.504807] ------------[ cut here ]------------
2017-05-04T10:32:02.492068+01:00 WARNING kernel: [    5.504816] WARNING: CPU: 1 PID: 1280 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/gpu/drm/i915/intel_pm.c:3729 skl_update_other_pipe_wm+0x161/0x1bc()
2017-05-04T10:32:02.492070+01:00 WARNING kernel: [    5.504827] WARN_ON(!wm_changed)
2017-05-04T10:32:02.492071+01:00 WARNING kernel: [    5.504830] Modules linked in: ip6table_filter snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device iwlmvm iwlwifi iwl7000_mac80211 cfg80211 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev
2017-05-04T10:32:02.492072+01:00 WARNING kernel: [    5.504861] CPU: 1 PID: 1280 Comm: DrmThread Tainted: G        W      3.18.0-13980-g7357b88 #1
2017-05-04T10:32:02.492078+01:00 WARNING kernel: [    5.504868] Hardware name: Hewlett-Packard Chell/Chell, BIOS Google_Chell.7820.253.0 01/18/2017
2017-05-04T10:32:02.492079+01:00 WARNING kernel: [    5.504875]  0000000000000000 0000000006c1012f ffff880463f637b8 ffffffffb72a3630
2017-05-04T10:32:02.492080+01:00 WARNING kernel: [    5.504884]  0000000000000000 ffff880463f63810 ffff880463f637f8 ffffffffb6c63bca
2017-05-04T10:32:02.492081+01:00 WARNING kernel: [    5.504894]  ffff880463f639a9 ffffffffb6f65c14 ffff88046b588000 ffff88046c3a9fe8
2017-05-04T10:32:02.492082+01:00 WARNING kernel: [    5.504903] Call Trace:
2017-05-04T10:32:02.492083+01:00 WARNING kernel: [    5.504908]  [<ffffffffb72a3630>] dump_stack+0x4e/0x71
2017-05-04T10:32:02.492084+01:00 WARNING kernel: [    5.504915]  [<ffffffffb6c63bca>] warn_slowpath_common+0x81/0x9b
2017-05-04T10:32:02.492085+01:00 WARNING kernel: [    5.504922]  [<ffffffffb6f65c14>] ? skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.492086+01:00 WARNING kernel: [    5.504929]  [<ffffffffb6c63c39>] warn_slowpath_fmt+0x55/0x6b
2017-05-04T10:32:02.492087+01:00 WARNING kernel: [    5.504936]  [<ffffffffb6f65c14>] skl_update_other_pipe_wm+0x161/0x1bc
2017-05-04T10:32:02.492087+01:00 WARNING kernel: [    5.504944]  [<ffffffffb6f65e9c>] skl_update_wm+0x22d/0x773
2017-05-04T10:32:02.492088+01:00 WARNING kernel: [    5.504952]  [<ffffffffb6fa57e8>] ? gen9_read32+0x1b2/0x1c1
2017-05-04T10:32:02.492089+01:00 WARNING kernel: [    5.504959]  [<ffffffffb6f67171>] intel_update_watermarks+0x1e/0x20
2017-05-04T10:32:02.492090+01:00 WARNING kernel: [    5.504967]  [<ffffffffb6fc4126>] intel_atomic_commit+0x4f8/0x69e
2017-05-04T10:32:02.492091+01:00 WARNING kernel: [    5.504974]  [<ffffffffb6f5737c>] drm_atomic_commit+0x4d/0x52
2017-05-04T10:32:02.492092+01:00 WARNING kernel: [    5.504981]  [<ffffffffb6f3bde8>] drm_atomic_helper_set_config+0x52/0xa0
2017-05-04T10:32:02.492093+01:00 WARNING kernel: [    5.504988]  [<ffffffffb6f4a01b>] drm_mode_set_config_internal+0x5f/0xfa
2017-05-04T10:32:02.492094+01:00 WARNING kernel: [    5.504996]  [<ffffffffb6f4d857>] drm_mode_setcrtc+0x464/0x4f1
2017-05-04T10:32:02.492095+01:00 WARNING kernel: [    5.505003]  [<ffffffffb6f40e11>] drm_ioctl+0x3d3/0x451
2017-05-04T10:32:02.492096+01:00 WARNING kernel: [    5.505010]  [<ffffffffb6f4d3f3>] ? drm_mode_setplane+0x159/0x159
2017-05-04T10:32:02.492097+01:00 WARNING kernel: [    5.505017]  [<ffffffffb6d61aae>] do_vfs_ioctl+0x399/0x460
2017-05-04T10:32:02.492098+01:00 WARNING kernel: [    5.505023]  [<ffffffffb6d54f42>] ? __sb_end_write+0x2e/0x5d
2017-05-04T10:32:02.492099+01:00 WARNING kernel: [    5.505030]  [<ffffffffb6d61bcf>] SyS_ioctl+0x5a/0x7f
2017-05-04T10:32:02.492100+01:00 WARNING kernel: [    5.505035]  [<ffffffffb72a889c>] system_call_fastpath+0x1c/0x21
2017-05-04T10:32:02.492101+01:00 WARNING kernel: [    5.505041] ---[ end trace 1ebb2fbc9f79d2c8 ]---

Comment 1 by jcking@google.com, May 4 2017

Labels: -OS-Linux

Comment 2 by ka...@chromium.org, May 4 2017

Cc: tbroch@chromium.org sontis@chromium.org
Components: -OS>Kernel OS>Kernel>Display
Labels: -Pri-3 Pri-2
Hi jcking@,
what is the typeC-to-DP adapter you are using? 

So, unless you unplug and/while/ reboot, you are observing the bug if it is already reproduced by unplug-plug_back within a user session, right?

Comment 3 by jcking@google.com, May 4 2017 

Cable: https://store.google.com/product/usb_type_c_to_displayport_cable

Now that I read that, it is a little rough. Basically if you plug in the cable after booting, it works the first time. However if you unplug and plug it back in, it won't work until you reboot and/or reset. Power off via the bottom right menu and power back on don't appear to help (not sure if we are actually powering off, or restoring from a saved state). Hardware resetting appeared to be helpful.

Comment 4 by ka...@chromium.org, May 4 2017 

> ...until you reboot and/or reset.
But you say the power-off and power-on does not help in the original report, so cable must be unplugged while rebooting.

sontis@ is trying to reproduce but no luck for now. He was able to confirm the kernel warning though - every time the plug event after reboot(while unplugged) generates skl_update_other_pipe_wm+0x161/0x1bc() kernel warning.

Can you share the models of monitors you used, or any specifics in the device usage that can be related?

Comment 5 by jcking@google.com, May 4 2017 

I'll work on commandeering the Chromebook in question. Should have it in a day or two. I'll answer the rest when I do.

The monitor we have here is an HP Z24i.

Comment 6 by marc...@chromium.org, May 4 2017

Cc: marc...@chromium.org
we have a stack of patches coming in for skylake that should address the watermarks errors (skl_update_other_pipe_wm). All the other messages (wifi etc.) are still going to be there, I don't know what their impact is.

Comment 7 by jcking@google.com, May 12 2017 

Have the Chromebook back again. Still continues to not detect the monitor. A new Macbook Pro using the same Type-C cable is able to detect the same monitor. There is another Chromebook here as well, another Chell, and it exhibits the same behavior. I'll try to get steps down. I am willing to transfer cable and Chromebook interoffice to MTV to sontis@ or somebody else as well.

Comment 8 by helenzhang@google.com, May 12 2017

Status: Untriaged (was: Unconfirmed)

Comment 9 by marc...@chromium.org, May 12 2017

Cc: tutankhamen@chromium.org dbehr@chromium.org

Comment 10 by marc...@chromium.org, Sep 20 2017

Owner: tutankhamen@chromium.org

Comment 11 by tutankhamen@chromium.org, Sep 28 2017

Status: WontFix (was: Untriaged)
Just tested it with Chell (59:9406) + LG 24UD58 monitor, connected with usb-c -> DP cable. Works as expected. I tried to reconnect monitor several times and every time monitor was waking up properly.
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