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Issue 907808 link

Starred by 1 user
Status: Unconfirmed
Owner: ----
Cc:
susan.boorgula@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Consistent stuttering for youtube videos observed

Reported by mlinchit...@gmail.com, Nov 22 
UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/70.0.3538.77 Chrome/70.0.3538.77 Safari/537.36

Example URL:
youtube.com

Steps to reproduce the problem:
On Ubuntu 18.10

1. Open a video (preferably in 4K, the stuttering is worse on 4K)
2. Observe that the video plays smoothly in firefox
3. Observe that the video periodically loads (loading symbol) or glitches (audible skip).

What is the expected behavior?

What went wrong?
Videos don't play smoothly, especially but not exclusively in 4K, regardless of hardware acceleration settings. The internet connection is not the cause of this. Behavior observed on both the latest Chrome and Chromium.

I haven't tried sites outside of youtube.

Did this work before? N/A 

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? N/A

Chrome version: 70.0.3538.77  Channel: stable
OS Version: 4.18
Flash Version: 

Contents of chrome://gpu: 

Graphics Feature Status
Canvas: Software only, hardware acceleration unavailable
Flash: Software only. Hardware acceleration disabled
Flash Stage3D: Software only. Hardware acceleration disabled
Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Disabled
Rasterization: Software only. Hardware acceleration disabled
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Synchronization: Enabled
Video Decode: Software only. Hardware acceleration disabled
Viz Service Display Compositor: Disabled
WebGL: Software only, hardware acceleration unavailable
WebGL2: Software only, hardware acceleration unavailable
Problems Detected
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Viz service display compositor is not enabled by default.
Disabled Features: viz_display_compositor
Skia renderer is not used by default.
Disabled Features: skia_renderer
Skia deferred display list is not used by default.
Disabled Features: skia_deferred_display_list
Version Information
Data exported	2018-11-22T10:59:17.897Z
Chrome version	Chrome/70.0.3538.77
Operating system	Linux 4.18.0-11-generic
Software rendering list URL	https://chromium.googlesource.com/chromium/src/+/0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9/gpu/config/software_rendering_list.json
Driver bug list URL	https://chromium.googlesource.com/chromium/src/+/0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9/gpu/config/gpu_driver_bug_list.json
ANGLE commit id	unknown hash
2D graphics backend	Skia/70 193565807f7fd2a2c14e21b44c545cc03ebe134f-
Command Line	/usr/lib/chromium-browser/chromium-browser --enable-pinch --flag-switches-begin --top-chrome-md=material --flag-switches-end
Driver Information
Initialization time	52
In-process GPU	false
Passthrough Command Decoder	false
Sandboxed	true
GPU0	VENDOR = 0x8086 [Google Inc.], DEVICE= 0x0a16 [Google SwiftShader] *ACTIVE*
Optimus	false
AMD switchable	false
Driver vendor	
Driver version	4.1.0.2
Driver date	
GPU CUDA compute capability major version	0
Pixel shader version	3.00
Vertex shader version	3.00
Max. MSAA samples	4
Machine model name	
Machine model version	
GL_VENDOR	Google Inc.
GL_RENDERER	Google SwiftShader
GL_VERSION	OpenGL ES 3.0 SwiftShader 4.1.0.2
GL_EXTENSIONS	GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_framebuffer_object GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context 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_texture_3D GL_OES_vertex_array_object GL_OES_vertex_half_float GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_ARB_texture_rectangle GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_format_BGRA8888 GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_texture_filtering_hint GL_NV_fence GL_NV_framebuffer_blit GL_NV_read_depth
Disabled Extensions	
Disabled WebGL Extensions	
Window system binding vendor	Google Inc.
Window system binding version	1.4 SwiftShader 4.1.0.2
Window system binding extensions	EGL_KHR_create_context EGL_KHR_get_all_proc_addresses EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_fence_sync EGL_KHR_image_base EGL_KHR_surfaceless_context EGL_ANGLE_iosurface_client_buffer EGL_ANDROID_framebuffer_target EGL_ANDROID_recordable
Window manager	KWin
XDG_CURRENT_DESKTOP	KDE
Compositing manager	Yes
Direct rendering	Yes
Reset notification strategy	0x0000
GPU process crash count	0
System visual ID	0
RGBA visual ID	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
R_16	Software only
RG_88	Software only
BGR_565	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	Software only
BGRX_8888	Software only
BGRX_1010102	Software only
RGBX_1010102	Software only
BGRA_8888	Software only
RGBA_F16	Software only
YVU_420	Software only
YUV_420_BIPLANAR	Software only
UYVY_422	Software only
Display(s) Information
Info	Display[1252227165732163] bounds=[0,0 1920x1200], workarea=[41,24 1879x1176], scale=1, external.
Color space information	{primaries:INVALID, transfer:INVALID, matrix:INVALID, range:INVALID}
Bits per color component	8
Bits per pixel	24
Info	Display[1251884238288965] bounds=[1920,88 1280x1024], workarea=[1920,88 1280x1024], scale=1, external.
Color space information	{primaries:INVALID, transfer:INVALID, matrix:INVALID, range:INVALID}
Bits per color component	8
Bits per pixel	24
Video Acceleration Information
Driver Information for Hardware GPU
Initialization time	52
In-process GPU	false
Passthrough Command Decoder	false
Sandboxed	true
GPU0	VENDOR = 0x8086 [Google Inc.], DEVICE= 0x0a16 [Google SwiftShader] *ACTIVE*
Optimus	false
AMD switchable	false
Driver vendor	
Driver version	4.1.0.2
Driver date	
GPU CUDA compute capability major version	0
Pixel shader version	3.00
Vertex shader version	3.00
Max. MSAA samples	4
Machine model name	
Machine model version	
GL_VENDOR	Google Inc.
GL_RENDERER	Google SwiftShader
GL_VERSION	OpenGL ES 3.0 SwiftShader 4.1.0.2
GL_EXTENSIONS	GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_framebuffer_object GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context 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_texture_3D GL_OES_vertex_array_object GL_OES_vertex_half_float GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_ARB_texture_rectangle GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_format_BGRA8888 GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_texture_filtering_hint GL_NV_fence GL_NV_framebuffer_blit GL_NV_read_depth
Disabled Extensions	
Disabled WebGL Extensions	
Window system binding vendor	Google Inc.
Window system binding version	1.4 SwiftShader 4.1.0.2
Window system binding extensions	EGL_KHR_create_context EGL_KHR_get_all_proc_addresses EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_fence_sync EGL_KHR_image_base EGL_KHR_surfaceless_context EGL_ANGLE_iosurface_client_buffer EGL_ANDROID_framebuffer_target EGL_ANDROID_recordable
Window manager	KWin
XDG_CURRENT_DESKTOP	KDE
Compositing manager	Yes
Direct rendering	Yes
Reset notification strategy	0x0000
GPU process crash count	0
System visual ID	0
RGBA visual ID	0
Graphics Feature Status for Hardware GPU
Canvas: Software only, hardware acceleration unavailable
Flash: Software only. Hardware acceleration disabled
Flash Stage3D: Software only. Hardware acceleration disabled
Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Disabled
Rasterization: Software only. Hardware acceleration disabled
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Synchronization: Enabled
Video Decode: Software only. Hardware acceleration disabled
Viz Service Display Compositor: Disabled
WebGL: Software only, hardware acceleration unavailable
WebGL2: Software only, hardware acceleration unavailable
Problems Detected for Hardware GPU
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Viz service display compositor is not enabled by default.
Disabled Features: viz_display_compositor
Skia renderer is not used by default.
Disabled Features: skia_renderer
Skia deferred display list is not used by default.
Disabled Features: skia_deferred_display_list

Comment 1 by susan.boorgula@chromium.org, Nov 22

Labels: Needs-Triage-M70

Comment 2 by susan.boorgula@chromium.org, Nov 23

Cc: susan.boorgula@chromium.org
Labels: TE-NeedsTriageFromMTV Triaged-ET
mlinchitstest@ Thanks for the issue.

Tested this issue on Ubuntu 17.10 on the reported version 70.0.3538.77 and the latest Stable 70.0.3538.110 and unable to reproduce the issue by following the below steps.

1. Launched Chrome and navigated to youtube.com
2. Played a video and could observe that the video is playing smoothly and no stuttering is observed.

As this issue was reported on Ubuntu 18.10 using 4K monitor, this setup is not available at TE end to test and confirm the issue.
Hence adding 'TE-NeedsTriageFromMTV' label and requesting the team to look into the issue and help in further triaging.

Thanks...

Comment 3 by dbbrooks@chromium.org, Today (12 hours ago) 

Since there hasn't been an update in two months, friendly ping to the team that triages the label "TE-NeedsTriageFromMTV". Could you please update this bug? Thanks.
►

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