YouTube video stutters occasionally
Reported by
simeonve...@gmail.com,
Jun 7 2018
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Issue descriptionUserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36 Example URL: Steps to reproduce the problem: 1. Open up any YouTube video 2. Preferably a 60fps one 3. Preferably on a 120Hz+ monitor What is the expected behavior? What went wrong? YouTube videos stutter occasionally on Ubuntu 18.04 and Chrome 67. The stutter is completely random, from rare to very often. I think the stutter is most common on 60fps videos with 120Hz+ refresh rate of my monitor. I've never experienced such lag before on the same configuration - i3-6100U with Intel® HD Graphics 520 and a 120Hz+ monitor on Ubuntu 16.10 Chrome 65. The sound of the video is playing while the video hangs for 1-3 second up to a 9-10 seconds! The only thing running on the system is that video. When I switch to 60Hz the stutter is very rare though it happens from time to time for about 1-3 seconds. Did this work before? N/A Is it a problem with Flash or HTML5? N/A Does this work in other browsers? Yes Chrome version: 67.0.3396.79 Channel: stable OS Version: Ubuntu 18.04 Flash Version: Contents of chrome://gpu: Graphics Feature Status Canvas: Hardware accelerated CheckerImaging: Disabled 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 Rasterization: Software only. Hardware acceleration disabled Surface Synchronization: Enabled Video Decode: Unavailable Viz Service Display Compositor: Disabled WebGL: Hardware accelerated WebGL2: Hardware accelerated Driver Bug Workarounds adjust_src_dst_region_for_blitframebuffer clear_uniforms_before_first_program_use count_all_in_varyings_packing decode_encode_srgb_for_generatemipmap disable_framebuffer_cmaa disable_post_sub_buffers_for_onscreen_surfaces msaa_is_slow scalarize_vec_and_mat_constructor_args Problems Detected Accelerated video decode is unavailable on Linux: 137247 Disabled Features: accelerated_video_decode Clear uniforms before first program use on all platforms: 124764, 349137 Applied Workarounds: clear_uniforms_before_first_program_use Mesa drivers in Linux handle varyings without static use incorrectly: 333885 Applied Workarounds: count_all_in_varyings_packing Disable partial swaps on Mesa drivers (detected with GL_RENDERER): 339493 Applied Workarounds: disable_post_sub_buffers_for_onscreen_surfaces 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 Timer queries crash on Intel GPUs on Linux: 540543, 576991 Applied Workarounds: disable(GL_ARB_timer_query), disable(GL_EXT_timer_query) Use GL_INTEL_framebuffer_CMAA on ChromeOS: 535198 Applied Workarounds: disable_framebuffer_cmaa Disable partial swaps on Mesa drivers (detected with GL_VERSION): 339493 Applied Workarounds: disable_post_sub_buffers_for_onscreen_surfaces Decode and encode before generateMipmap for srgb format textures on os except macosx: 634519 Applied Workarounds: decode_encode_srgb_for_generatemipmap adjust src/dst region if blitting pixels outside read framebuffer on Linux Intel: 664740 Applied Workarounds: adjust_src_dst_region_for_blitframebuffer Disable KHR_blend_equation_advanced until cc shaders are updated: 661715 Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent) Don't expose disjoint_timer_query extensions to WebGL: 808744 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 Checker-imaging has been disabled via finch trial or the command line. Disabled Features: checker_imaging Version Information Data exported 2018-06-07T21:48:06.251Z Chrome version Chrome/67.0.3396.79 Operating system Linux 4.15.0-22-generic Software rendering list URL https://chromium.googlesource.com/chromium/src/+/161bdad7314804dc8c72f850396fcd696e8863e8/gpu/config/software_rendering_list.json Driver bug list URL https://chromium.googlesource.com/chromium/src/+/161bdad7314804dc8c72f850396fcd696e8863e8/gpu/config/gpu_driver_bug_list.json ANGLE commit id 702006f4a07e 2D graphics backend Skia/67 78b60f4ff13b83da98ae2bca85aaef0a98b61098- Command Line /usr/bin/google-chrome-stable --flag-switches-begin --disable-smooth-scrolling --flag-switches-end Driver Information Initialization time 45 In-process GPU false Passthrough Command Decoder false Direct Composition false Supports overlays false Sandboxed true GPU0 VENDOR = 0x8086, DEVICE= 0x1916 *ACTIVE* Optimus false AMD switchable false Driver vendor Mesa Driver version 18.0.0 Driver date Pixel shader version 1.30 Vertex shader version 1.30 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 520 (Skylake GT2) GL_VERSION 3.0 Mesa 18.0.0-rc5 GL_EXTENSIONS GL_3DFX_texture_compression_FXT1 GL_AMD_conservative_depth GL_AMD_draw_buffers_blend GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compressed_texture_pixel_storage GL_ARB_compute_shader GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_filter_anisotropic GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_window_pos GL_ATI_blend_equation_separate GL_ATI_draw_buffers GL_ATI_separate_stencil GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_copy_texture GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_gpu_program_parameters GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shader_integer_mix GL_EXT_shader_samples_identical GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_subtexture GL_EXT_texture GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_object GL_EXT_texture_rectangle GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_IBM_multimode_draw_arrays GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_INGR_blend_func_separate GL_INTEL_performance_query GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_signed_rgba GL_MESA_window_pos GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_light_max_exponent GL_NV_packed_depth_stencil GL_NV_primitive_restart GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_env_combine4 GL_NV_texture_rectangle GL_OES_EGL_image GL_OES_read_format GL_S3_s3tc GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_SUN_multi_draw_arrays Disabled Extensions GL_ARB_timer_query GL_EXT_timer_query GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent Disabled WebGL Extensions EXT_disjoint_timer_query EXT_disjoint_timer_query_webgl2 Window system binding vendor SGI Window system binding version 1.4 Window system binding extensions GLX_ARB_create_context GLX_ARB_create_context_profile GLX_ARB_create_context_robustness GLX_ARB_fbconfig_float GLX_ARB_framebuffer_sRGB GLX_ARB_multisample GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_EXT_fbconfig_packed_float GLX_EXT_framebuffer_sRGB GLX_EXT_import_context GLX_EXT_libglvnd GLX_EXT_texture_from_pixmap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_MESA_copy_sub_buffer GLX_OML_swap_method GLX_SGI_make_current_read GLX_SGI_swap_control GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group GLX_INTEL_swap_event Window manager GNOME Shell XDG_CURRENT_DESKTOP GNOME GDMSESSION gnome-xorg Compositing manager Yes Direct rendering Yes Reset notification strategy 0x8261 GPU process crash count 0 System visual ID 33 RGBA visual ID 328 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[8564984826051651] bounds=[0,0 1920x1080], workarea=[0,27 1920x1025], scale=1, external. Color space information {primaries_d50_referred: [[0.6535, 0.3305], [0.3288, 0.6105], [0.1592, 0.0830]], transfer:0.0000*x + 0.0000 if x < 0.0000 else (1.0000*x + 0.0000)**2.2000 + 0.0000, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Video Acceleration Information Log Messages [17266:17266:0607/130146.235844:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/130146.235878:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/132816.068492:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/132816.068514:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/134122.650892:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/134122.650959:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/135234.277942:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6767000]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135235.665530:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b84e00]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135250.554671:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6769300]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135250.554706:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6769300]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.197981:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6adc100]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135251.198166:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6adc100]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.461585:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.461906:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.469328:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.469717:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.486147:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.486188:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.498900:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.498943:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.511938:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.511981:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.525291:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.525405:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.539503:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.540258:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.555225:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.555370:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.569503:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.569579:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.583195:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.583245:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.597092:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.597148:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.611189:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.611253:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.625932:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.626036:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.641066:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.641169:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135251.656681:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135251.656910:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135252.467771:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7103a00]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135252.476089:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7103a00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135252.476324:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7103a00]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135252.476416:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7103a00]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135252.590254:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6adc100]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135252.594745:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6b1ae00]RENDER WARNING: there is no texture bound to the unit 2 [17266:17266:0607/135252.610373:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c70c2700]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135252.610412:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c70c2700]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135252.716521:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c70c4300]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135252.742468:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7112000]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135252.742511:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7112000]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135252.774918:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7112000]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135257.219085:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c70c2700]RENDER WARNING: there is no texture bound to the unit 1 [17266:17266:0607/135257.280590:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c7103a00]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/135258.026557:ERROR:gles2_cmd_decoder.cc(10167)] : [.Offscreen-For-WebGL-0x1a50c6769300]RENDER WARNING: there is no texture bound to the unit 0 [17266:17266:0607/141607.447056:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/141607.447082:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/141639.395669:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/141639.395728:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/163314.227483:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1 [17266:17266:0607/180335.778714:WARNING:ipc_message_attachment_set.cc(49)] : MessageAttachmentSet destroyed with unconsumed attachments: 0/1
,
Jun 8 2018
I forgot to mention that the same configuration (Ubuntu 18.04, i3-6100U with Intel® HD Graphics 520, 120Hz monitor) works without problems for YouTube videos on Firefox 60 and Firefox 62 Nightly.
,
Jun 8 2018
Thanks for the report. Adding video render folks. > The only thing running on the system is that video. Can you repeat this test on the 120 hz display and open a second tab to chrome://media-internals. Once you observe a fair bit of stutter, select the "player" in the internals page and copy the output to this bug.
,
Jun 8 2018
I've attached the media-internals dump. It's a 1080p 60fps boxing video (on 120Hz). The first big stutter was around 2:40m of the video for about 8 seconds, then a couple of seconds later again a big stutter. Then a third one a few minutes later, also one prior taking the dump. In all instances the audio is playing, only the video hangs. Hope that helps.
,
Jun 9 2018
It turns out that the problem is with Chrome in combination with Gnome Shell: https://askubuntu.com/questions/1029485/youtube-micro-stutter-after-18-04 I watched the exact same video in Chrome from start to finish without a single stutter in alternative desktop environment (namely i3). Then logged back in with Gnome and the stutter was present on the exact same video. Switching back and forth between x.org and wayland does not make any difference either. Gnome is a bit demanding on system resources, but at the same time Firefox plays videos just fine in it. So I'm not sure if something should be tweaked in Chrome or in Gnome Shell. Note that Gnome Shell is now the default desktop environment in every major linux distribution. Up until one week ago I was using Ubuntu 16.10 so it definitely was with an older version of Gnome (can't tell exactly which version). Currently Ubuntu 18.04 ships with Gnome Shell 3.28.1
,
Jun 11 2018
+sandersd@ for any gnome insights.
Your log shows the video renderer's buffer of decoded frames is frequently running empty and then quickly ramps back up to having available frames.
{
"time": 172547.92299997807,
"key": "video_buffering_state",
"value": "BUFFERING_HAVE_NOTHING"
},
{
"time": 172593.66099998355,
"key": "video_buffering_state",
"value": "BUFFERING_HAVE_ENOUGH"
},
We try to anticipate the vsync interval and cap the queue to only a few frames for the next few vsyncs to avoid taking up lots of memory. My guess is the vsync often arrives much later than we expected and the ready frames we're holding are now too old (wrt to audio) and we freeze while we try scramble to get the new frames ready.
I'm assigning this to Dale. He's most familiar with the video renderer and I think he also has a 120hz display. He's traveling atm - will be a week before he sees the bug - but he's our best hope ;).
,
Jun 11 2018
,
Jun 11 2018
+ccameron@ for compositing insights
,
Jun 11 2018
#0: Do you notice a difference when Wayland is enabled/disabled?
,
Jun 11 2018
Sorry, no ideas offhand.
,
Jun 11 2018
@chcunningham no, switching between x.org and wayland using Gnome does not make any difference. Stuttering happens on 60Hz as well.
,
Jun 18 2018
Hmm, plus a couple compositing folks given you say this is specific to gnome.
,
Jun 19 2018
Probably a duplicate of https://bugs.chromium.org/p/chromium/issues/detail?id=822549 And it looks like it's not only gnome issue Windows https://www.reddit.com/r/chrome/comments/8agxu3/youtube_videos_freeze_in_google_chrome/ https://productforums.google.com/forum/#!topic/chrome/JZocaed-mUI https://productforums.google.com/forum/#!topic/chrome/zWqHV8Kjhv8 MacOS https://productforums.google.com/forum/#!topic/chrome/oKd-nn67At0;context-place=forum/chrome
,
Jun 26 2018
Re: c#13, there are unfortunately an innumerable number of reasons for stuttering which range from bugs in chrome, bugs in os, bugs in drivers all the way to simply insufficient hardware. At least in simeonvelichkov@'s case this seems to be related to Gnome shell (by virtue of his a/b test). @sunnyps, thomasanderson@ are you aware of any issues with linux compositing right now and gnome that might cause this?
,
Jul 24
@simeonvelichkov are you still having this issue?
,
Jul 24
On Chrome 68.0.3440.75 + latest updates for my OS - yes. I've noticed that if I move my mouse I can brake the stutter, works almost every time.
,
Jul 24
=>sandersd@ who has been able to reproduce this on his home system. Seems we may not be getting the vsync interval right. @sunnyps any thoughts?
,
Jul 24
In the absence of GLX_OML_sync_control (I thought all mesa drivers had this but apparently not), we assume a frame rate of 60Hz no matter what the display says. We really should use xrandr information for this, but we haven't invested the time for implementing that. However, the OS compositor should be able to handle an app that submits at less than refresh rate. Firefox probably has no issues because they probably use Xv or just plain pixmaps to put video on display instead of using GLX like Chrome.
,
Jul 25
I am indeed able to reproduce on Ubuntu 18.04, Intel UHD Graphics 630, mutter 3.28.2, kernel 4.15.0. The attached display is running at 100Hz over DisplayPort. I built Chromium HEAD in release mode with dcheck_always_on so that I could enable video_renderer_algorithm logging. I don't see anything helpful in the logs, but I'm attaching them in case dalecurtis@ can see something I've missed. The logs do show a drop at or slighty before the stall. The logs use different timebases so it's hard to be very sure.
,
Jul 25
One note on the logs, the BUFFERING_HAVE_NOTHING state is shown to have lasted for less than 10ms, but the playback stall was many seconds long.
,
Jul 25
Looks like you're at least getting a 10ms interval: [1:18:0724/194421.863469:VERBOSE2:video_renderer_algorithm.cc(210)] Deadline: [1915363900, 1915373901], Interval: 10001, Duration: 33318 There are quite a few instances of missing intervals: 1:18:0724/194451.769162:VERBOSE2:video_renderer_algorithm.cc(450)] Missed 4 Render() intervals. Did audio play during the stall? The missed intervals would correspond to frozen frames.
,
Jul 25
Yes, audio continues to play. It seems that we're just not rendering new frames. Mouse movement is a trigger for recovering, which may be related to YouTube showing controls on mouse movement. I plan to attempt to reproduce with something other than YouTube, but at ~7min per repro it's a slow process. I'm hoping that I can increase the reproduction frequency by tuning the complexity of the content.
,
Jul 25
I think videos like this one https://www.youtube.com/watch?v=hVvEISFw9w0 are as demanding as it can get. It stalls for me on 1080p60 / 120Hz in under a minute almost always. At least it's a chill-out one.
,
Jul 25
From the algorithm's perspective it seems like we're just not getting begin frame calls regularly then. As for why that's happening I can't tell from that log. @sandersd: Can you capture a trace while playing? You'll want the gpu+media+cc categories enabled. @sunnyps: any other useful ones to enable?
,
Jul 25
viz category too (it's included in "Rendering" section)
,
Jul 25
I've been doing exactly that. I got lucky with one and had a stall immediately after starting playback, which is important because the buffer fills quickly with all the rendering stuff turned on. I did the rendering preset, minus blink, plus media. This trace shows the sequence: - Start tracing - Switch tabs to YouTube - Fullscreen - Play (at 3.3s) - Stall (region around 7s) - Exit and stop tracing It looks like media:: is continuing to decode and upload frames to the GPU the whole time, but the compositor just stops doing work.
,
Jul 25
So this is using the video surfaces path? The VideoResourceUpdater::CreateForHardwarePlanes trace event is on the media thread instead of compositor thread. It looks like video updates stop when the renderer compositor is not submitting frames.
,
Jul 25
+liberato@, since my build included 0484f40ae08d58560aa4a693d490b13a7709dd7b.
,
Jul 25
Correction, I meant 0ed31e65e617e652db341160f90fb845fdd0fe5e.
,
Jul 25
Trace with video surfaces disabled. I also added blink, and correctly enabled media this time. The stall is ~10s long and therefore takes up most of the trace.
,
Jul 25
Video/audio look fine in that trace, we're getting begin frames and vending valid video frames back. Swap buffers seems to be happening on the GPU thread too, so not sure what's wrong.
,
Jul 25
Render thread activity dies to nothing, not sure what that's about.
,
Jul 25
Before render thread goes idle, I see "TileManager::AssignGpuMemory tile violates memory policy" traces which usually indicate hitting our hard memory limit. We're using GMBs and issuing CopyRowsToNV12Buffer tasks every frame. Those tasks copy 2560x204 pixels at one time, and there seem to be 8 of these per frame which probably corresponds to 2560x1600 display. I'm not sure how the synchronization between the copy and use of the GMB in the GPU process works.
,
Jul 26
Those events seem to be extremely frequent outside of the stall; there are 343 of them total.
,
Jul 26
Note: our hard memory limit is a self imposed limit of 512MB for tile memory if I recall correctly.
,
Jul 26
As mentioned in person, I'd recommend just upping the hard coded limit in a test build to see if things change.
,
Jul 26
Trace with limits raised to 4GiB. "TileManager::AssignGpuMemory tile violates memory policy" messages continue to be frequent. No notable change in stall behavior. I also created traces with memory-infra and viz overlay debug. Memory use did not seem to be increasing and the overlays appear to scheduled throughout stalls. (Not attached due to low quality of these traces; the buffer fills up fast with memory-infra enabled.) Slightly different methodology this time; this time I paused the video ~immediately after the stall, which makes it easy to locate the stall in the trace. The stall was a few seconds in this case. I honestly can't eyeball an obvious place in the trace that would indicate the stall started. As far as I can tell, everything is running fine the entire time. (Which supports the compositor bug theory, but doesn't really point to a next step.)
,
Jul 26
That trace uses the video surfaces code path AFAICT. Renderer compositor and main threads seem to go idle where the stall happens. Interesting observation: the media thread only issues command buffer OrderingBarrier and not Flush. In the absence of an explicit Flush commands will be queued up but never be sent to the GPU process. I suspect when the compositor is idle it issues explicit Flush once per frame which also flushes the ordering barriers of video (ordering barrier list is global per process in GpuChannelHost). Can you try changing the GenUnverifiedSyncTokenCHROMIUM() call to GenSyncTokenCHROMIUM() here: https://cs.chromium.org/chromium/src/media/renderers/video_resource_updater.cc?rcl=8927190d6343b3e607ca1c267866305038773e5a&l=154 (creating a verified sync token has the side-effect of flushing)
,
Jul 26
* I meant to say when compositor is *not* idle it issues explicit flushes once per frame.
,
Jul 27
My above comment might be a red herring. VideoFrameSubmitter calls ClientResourceProvider::PrepareSendToParent() before submitting frame to viz. PrepareSendToParent causes an implicit flush by verifying unverified sync tokens if delegated_sync_points_required is true (which it is). I also noticed issue 855868 which is also looks like a synchronization issue except that we're displaying garbage there instead of stalling. IIUC the video surface stuff is supposed to work with the new mojo VDA only, right? And the mojo VDA returns empty sync tokens to the renderer because we assume that the work of allocating and decoding is done in the GPU process when we return the mailbox and sync token, correct? I'd like to double check the assumptions there.
,
Jul 27
No VDA is used on Linux; this is VpxVideoDecoder. GenSyncTokenCHROMIUM() did not make a difference.
,
Dec 1
Still getting this on Ubuntu 18.04 and Chrome 70.0.3538.77
,
Dec 5
Still getting this on Ubuntu 18.04 and Chrome 71.0.3578.80 |
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Comment 1 by krajshree@chromium.org
, Jun 8 2018