Take a lot of CPU !!!

[MrMic]

Hi,

It takes a lot of CPU whereas Chromium do not.
I got almost 70% and with Chromium 10% at the
very most.

Do something !

Rgds,

[DoctorG]

@MrMic Welcome in our Vivaldi Community

Enjoy browsing with Vivaldi.

Some useful links for you:

• Vivaldi Features
• How To
• Vivaldi Tips
• Tutorials
• Vivaldi Help
• Using the Forum Search
• Local Forums in your language
• Troubleshooting issues
• Common Security-Related Questions
• Help on Feature Requests
• Modding Vivaldi
• Snapshot vs Stable browser
• Vivaldi's Business Model
• Help us grow

[DoctorG]

@MrMic Please check Troubleshooting issues.

Which Vivaldi, Linux and Desktop version?
Which GPU?
A few steps so i can check it?

[aartz]

Hey @MrMic

Which Linux distro do u use?

v/r

Andi

[sev7en]

@MrMic Hello, which version of Vivaldi are you using and in which linux distro?

[MrMic]

@sev7en
5.7.2921.63 (Stable channel) stable (64 bits)
Ubuntu 20.04

[DoctorG]

//edit: cold be a issue with missing Hardware Acceleration of your GPU.
Check internal page vivaldi://gpu , copy and paste here with </> button.

[sev7en]

@MrMic Thanks, the @DoctorG can be a suggestion and you can dig into via terminal

suo ps -aux

Do you have a discrete GPU?

[MrMic]

@DoctorG

Graphics Feature Status
Canvas: Hardware accelerated
Canvas out-of-process rasterization: Disabled
Direct Rendering Display Compositor: Disabled
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
OpenGL: Enabled
Rasterization: Hardware accelerated
Raw Draw: Disabled
Video Decode: Hardware accelerated
Video Encode: Software only. Hardware acceleration disabled
Vulkan: Disabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
WebGPU: Disabled
Driver Bug Workarounds
adjust_src_dst_region_for_blitframebuffer
clear_uniforms_before_first_program_use
disable_discard_framebuffer
enable_webgl_timer_query_extensions
exit_on_context_lost
force_cube_complete
init_gl_position_in_vertex_shader
init_vertex_attributes
pack_parameters_workaround_with_pack_buffer
reset_base_mipmap_level_before_texstorage
unpack_alignment_workaround_with_unpack_buffer
unpack_overlapping_rows_separately_unpack_buffer
use_virtualized_gl_contexts
disabled_extension_GL_KHR_blend_equation_advanced
disabled_extension_GL_KHR_blend_equation_advanced_coherent
disabled_extension_GL_MESA_framebuffer_flip_y
disabled_extension_GL_NV_path_rendering
Problems Detected
WebGPU has been disabled via blocklist or the command line.
Disabled Features: webgpu
Accelerated video encode has been disabled, either via blocklist, about:flags or the command line.
Disabled Features: video_encode
Program link fails in NVIDIA Linux if gl_Position is not set: 286468
Applied Workarounds: init_gl_position_in_vertex_shader
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Linux NVIDIA drivers don't have the correct defaults for vertex attributes: 351528
Applied Workarounds: init_vertex_attributes
MakeCurrent is slow on Linux with NVIDIA drivers: 449150, 514510
Applied Workarounds: use_virtualized_gl_contexts
NVIDIA drivers before 346 lack features in NV_path_rendering and related extensions to implement driver level path rendering.: 344330
Applied Workarounds: disable(GL_NV_path_rendering)
NVIDIA fails glReadPixels from incomplete cube map texture: 518889
Applied Workarounds: force_cube_complete
Pack parameters work incorrectly with pack buffer bound: 563714
Applied Workarounds: pack_parameters_workaround_with_pack_buffer
Alignment works incorrectly with unpack buffer bound: 563714
Applied Workarounds: unpack_alignment_workaround_with_unpack_buffer
Framebuffer discarding can hurt performance on non-tilers: 570897
Applied Workarounds: disable_discard_framebuffer
Unpacking overlapping rows from unpack buffers is unstable on NVIDIA GL driver: 596774
Applied Workarounds: unpack_overlapping_rows_separately_unpack_buffer
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)
Expose WebGL's disjoint_timer_query extensions on platforms with site isolation: 808744, 870491
Applied Workarounds: enable_webgl_timer_query_extensions
glTexStorage* are buggy when base mipmap level is not 0: 877874
Applied Workarounds: reset_base_mipmap_level_before_texstorage
Some drivers can't recover after OUT_OF_MEM and context lost: 893177
Applied Workarounds: exit_on_context_lost
adjust src/dst region if blitting pixels outside framebuffer on Linux NVIDIA: 830046
Applied Workarounds: adjust_src_dst_region_for_blitframebuffer
Disable GL_MESA_framebuffer_flip_y for desktop GL: 964010
Applied Workarounds: disable(GL_MESA_framebuffer_flip_y)
ANGLE Features
allowCompressedFormats (Frontend workarounds): Enabled: true
Allow compressed formats
cacheCompiledShader (Frontend features) anglebug:7036: Disabled
Enable to cache compiled shaders
disableAnisotropicFiltering (Frontend workarounds): Disabled
Disable support for anisotropic filtering
disableDrawBuffersIndexed (Frontend features) anglebug:7724: Disabled
Disable support for OES_draw_buffers_indexed and EXT_draw_buffers_indexed
disableProgramBinary (Frontend features) anglebug:5007: Disabled: IsPowerVrRogue(functions)
Disable support for GL_OES_get_program_binary
disableProgramCachingForTransformFeedback (Frontend workarounds): Disabled: IsAndroid() && isQualcomm
On some GPUs, program binaries don't contain transform feedback varyings
emulatePixelLocalStorage (Frontend features) anglebug:7279: Disabled: false
Emulate ANGLE_shader_pixel_local_storage using shader images
enableCaptureLimits (Frontend features) anglebug:5750: Disabled
Set the context limits like frame capturing was enabled
enableProgramBinaryForCapture (Frontend features) anglebug:5658: Disabled
Even if FrameCapture is enabled, enable GL_OES_get_program_binary
forceDepthAttachmentInitOnClear (Frontend workarounds) anglebug:7246: Disabled
Force depth attachment initialization on clear ops
forceGlErrorChecking (Frontend features) https://issuetracker.google.com/220069903: Disabled
Force GL error checking (i.e. prevent applications from disabling error checking
forceInitShaderVariables (Frontend features): Disabled
Force-enable shader variable initialization
forceRobustResourceInit (Frontend features) anglebug:6041: Disabled
Force-enable robust resource init
loseContextOnOutOfMemory (Frontend workarounds): Enabled: true
Some users rely on a lost context notification if a GL_OUT_OF_MEMORY error occurs
scalarizeVecAndMatConstructorArgs (Frontend workarounds) 1165751: Disabled: false
Always rewrite vec/mat constructors to be consistent
singleThreadedTextureDecompression (Frontend workarounds): Disabled
Disables multi-threaded decompression of compressed texture formats
RGBA4IsNotSupportedForColorRendering (OpenGL workarounds): Disabled: functions->standard == STANDARD_GL_DESKTOP && isIntel
GL_RGBA4 is not color renderable
RGBDXT1TexturesSampleZeroAlpha (OpenGL workarounds) anglebug:3729: Disabled: IsApple()
Sampling BLACK texels from RGB DXT1 textures returns transparent black on Mac.
addAndTrueToLoopCondition (OpenGL workarounds): Disabled: IsApple() && isIntel
Calculation of loop conditions in for and while loop has bug
adjustSrcDstRegionForBlitFramebuffer (OpenGL workarounds) 830046: Enabled: IsLinux() || (IsAndroid() && isNvidia) || (IsWindows() && isNvidia) || (IsApple() && functions->standard == STANDARD_GL_ES)
Many platforms have issues with blitFramebuffer when the parameters are large.
allowAstcFormats (OpenGL workarounds): Enabled: !isMesa || isIntel && (Is9thGenIntel(device) || IsGeminiLake(device) || IsCoffeeLake(device) || Is11thGenIntel(device) || Is12thGenIntel(device))
Enable ASTC on desktop OpenGL
allowClearForRobustResourceInit (OpenGL workarounds) 848952: Disabled: IsApple()
Using glClear for robust resource initialization is buggy on some drivers and leads to texture corruption. Default to data uploads except on MacOS where it is very slow.
allowETCFormats (OpenGL workarounds): Disabled: isIntel && !IsSandyBridge(device) && !IsIvyBridge(device) && !IsHaswell(device)
Enable ETC2/EAC on desktop OpenGL
alwaysCallUseProgramAfterLink (OpenGL workarounds) 110263: Enabled: true
Always call useProgram after a successful link to avoid a driver bug
alwaysUnbindFramebufferTexture2D (OpenGL workarounds) anglebug:5536: Enabled: isNvidia && (IsWindows() || IsLinux())
Force unbind framebufferTexture2D before binding renderbuffer to work around driver bug.
avoid1BitAlphaTextureFormats (OpenGL workarounds): Disabled: functions->standard == STANDARD_GL_DESKTOP && isAMD
Issue with 1-bit alpha framebuffer formats
bindTransformFeedbackBufferBeforeBindBufferRange (OpenGL workarounds) anglebug:5140: Disabled: IsApple()
Bind transform feedback buffers to the generic binding point before calling glBindBufferBase or glBindBufferRange.
clampArrayAccess (OpenGL workarounds) anglebug:2978: Enabled: IsAndroid() || isAMD || !functions->hasExtension("GL_KHR_robust_buffer_access_behavior")
Clamp uniform array access to avoid reading invalid memory.
clampFragDepth (OpenGL workarounds): Enabled: isNvidia
gl_FragDepth is not clamped correctly when rendering to a floating point depth buffer
clampMscRate (OpenGL workarounds) 1042393: Disabled: IsLinux() && IsWayland()
Some drivers return bogus values for GetMscRate, so we clamp it to 30Hz
clampPointSize (OpenGL workarounds): Enabled: IsAndroid() || isNvidia
The point size range reported from the API is inconsistent with the actual behavior
clearToZeroOrOneBroken (OpenGL workarounds) 710443: Disabled: IsApple() && isIntel && GetMacOSVersion() < OSVersion(10, 12, 6)
Clears when the clear color is all zeros or ones do not work.
clipSrcRegionForBlitFramebuffer (OpenGL workarounds) 830046: Disabled: IsApple() || (IsLinux() && isAMD)
Issues with blitFramebuffer when the parameters don't match the framebuffer size.
decodeEncodeSRGBForGenerateMipmap (OpenGL workarounds) anglebug:4646: Disabled: IsApple()
Decode and encode before generateMipmap for srgb format textures.
disableBlendFuncExtended (OpenGL workarounds) anglebug:1085: Disabled: isAMD || isIntel
ARB_blend_func_extended does not pass the tests
disableClipCullDistance (OpenGL workarounds) anglebug:7763: Disabled: isQualcomm
Shader compiler does not handle redeclared built-ins.
disableDrawBuffersIndexed (OpenGL workarounds): Disabled: IsWindows() && isAMD
Disable OES_draw_buffers_indexed extension.
disableGPUSwitchingSupport (OpenGL workarounds) 1091824: Disabled: isDualGPUMacWithNVIDIA
Disable GPU switching support (use only the low-power GPU) on older MacBook Pros.
disableMultisampledRenderToTexture (OpenGL workarounds) anglebug:2894: Disabled: isAdreno4xxOnAndroidLessThan51 || isAdreno4xxOnAndroid70 || isAdreno5xxOnAndroidLessThan70 || isAdreno5xxOnAndroid71 || isLinuxVivante
Many drivers have bugs when using GL_EXT_multisampled_render_to_texture
disableNativeParallelCompile (OpenGL workarounds) 1094869: Disabled: isTSANBuild && IsLinux() && isNvidia
Do not use native KHR_parallel_shader_compile even when available.
disableSemaphoreFd (OpenGL workarounds) 1046462: Disabled: IsLinux() && isAMD && isMesa && mesaVersion < (std::array<int, 3>{19, 3, 5})
Disable GL_EXT_semaphore_fd extension
disableSyncControlSupport (OpenGL workarounds) 1137851: Disabled: IsLinux() && isIntel && isMesa && mesaVersion[0] == 20
Speculative fix for issues on Linux/Wayland where exposing GLX_OML_sync_control renders Chrome unusable
disableTextureClampToBorder (OpenGL workarounds) anglebug:7405: Disabled: isImagination
Imagination devices generate INVALID_ENUM when setting the texture border color.
disableTimestampQueries (OpenGL workarounds) 811661: Disabled: (IsLinux() && isVMWare) || (IsAndroid() && isNvidia) || (IsAndroid() && GetAndroidSdkLevel() < 27 && IsAdreno5xxOrOlder(functions)) || (IsAndroid() && IsMaliT8xxOrOlder(functions)) || (IsAndroid() && IsMaliG31OrOlder(functions))
Disable GL_EXT_disjoint_timer_query extension
disableWorkerContexts (OpenGL workarounds) 849576: Enabled: (IsWindows() && (isIntel || isAMD)) || (IsLinux() && isNvidia) || IsIOS() || IsAndroid() || IsAndroidEmulator(functions)
Some tests have been seen to fail using worker contexts
doWhileGLSLCausesGPUHang (OpenGL workarounds) 644669: Disabled: IsApple() && functions->standard == STANDARD_GL_DESKTOP && GetMacOSVersion() < OSVersion(10, 11, 0)
Some GLSL constructs involving do-while loops cause GPU hangs
doesSRGBClearsOnLinearFramebufferAttachments (OpenGL workarounds): Disabled: isIntel || isAMD
Issue clearing framebuffers with linear attachments when GL_FRAMEBUFFER_SRGB is enabled
dontInitializeUninitializedLocals (OpenGL workarounds) anglebug:2046: Disabled: IsAndroid() && isQualcomm
Initializing uninitialized locals caused odd behavior in a few WebGL 2 tests
dontRelinkProgramsInParallel (OpenGL workarounds) anglebug:3045: Disabled: IsAndroid() || (IsWindows() && isIntel)
Relinking a program in parallel is buggy
dontUseLoopsToInitializeVariables (OpenGL workarounds) 809422: Disabled: (IsAndroid() && isQualcomm) || (isIntel && IsApple())
For loops used to initialize variables hit native GLSL compiler bugs
emulateAbsIntFunction (OpenGL workarounds) 642227: Disabled: IsApple() && isIntel
abs(i) where i is an integer returns unexpected result
emulateAtan2Float (OpenGL workarounds) 672380: Enabled: isNvidia
atan(y, x) may return a wrong answer
emulateCopyTexImage2D (OpenGL workarounds): Disabled: isApple
Replace CopyTexImage2D with TexImage2D + CopyTexSubImage2D.
emulateCopyTexImage2DFromRenderbuffers (OpenGL workarounds) anglebug:4674: Disabled: IsApple() && functions->standard == STANDARD_GL_ES && !(isAMD && IsWindows())
CopyTexImage2D spuriously returns errors on iOS when copying from renderbuffers.
emulateImmutableCompressedTexture3D (OpenGL workarounds) 1060012: Disabled: isQualcomm
Use non-immutable texture allocation to work around a driver bug.
emulateIsnanFloat (OpenGL workarounds) 650547: Disabled: isIntel && IsApple() && IsSkylake(device) && GetMacOSVersion() < OSVersion(10, 13, 2)
Using isnan() on highp float will get wrong answer
emulateMaxVertexAttribStride (OpenGL workarounds) anglebug:1936: Disabled: IsLinux() && functions->standard == STANDARD_GL_DESKTOP && isAMD
Some drivers return 0 when MAX_VERTEX_ATTRIB_STRIED queried
emulatePackSkipRowsAndPackSkipPixels (OpenGL workarounds) anglebug:4849: Disabled: IsApple()
GL_PACK_SKIP_ROWS and GL_PACK_SKIP_PIXELS are ignored in Apple's OpenGL driver.
emulatePrimitiveRestartFixedIndex (OpenGL workarounds) anglebug:3997: Enabled: functions->standard == STANDARD_GL_DESKTOP && functions->isAtLeastGL(gl::Version(3, 1)) && !functions->isAtLeastGL(gl::Version(4, 3))
When GL_PRIMITIVE_RESTART_FIXED_INDEX is not available, emulate it with GL_PRIMITIVE_RESTART and glPrimitiveRestartIndex.
emulateRGB10 (OpenGL workarounds) 1300575: Enabled: functions->standard == STANDARD_GL_DESKTOP
Emulate RGB10 support using RGB10_A2.
finishDoesNotCauseQueriesToBeAvailable (OpenGL workarounds): Enabled: functions->standard == STANDARD_GL_DESKTOP && isNvidia
glFinish doesn't cause all queries to report available result
flushBeforeDeleteTextureIfCopiedTo (OpenGL workarounds) anglebug:4267: Disabled: IsApple() && isIntel
Some drivers track CopyTex{Sub}Image texture dependencies incorrectly. Flush before glDeleteTextures in this case
flushOnFramebufferChange (OpenGL workarounds) 1181068: Disabled: IsApple() && Has9thGenIntelGPU(systemInfo)
Switching framebuffers without a flush can lead to crashes on Intel 9th Generation GPU Macs.
initFragmentOutputVariables (OpenGL workarounds) 1171371: Disabled: IsAdreno42xOr3xx(functions)
No init gl_FragColor causes context lost
initializeCurrentVertexAttributes (OpenGL workarounds): Enabled: isNvidia
During initialization, assign the current vertex attributes to the spec-mandated defaults
keepBufferShadowCopy (OpenGL workarounds): Disabled: !CanMapBufferForRead(functions)
Maintain a shadow copy of buffer data when the GL API does not permit reading data back.
limitMax3dArrayTextureSizeTo1024 (OpenGL workarounds) 927470: Disabled: limitMaxTextureSize
Limit max 3d texture size and max array texture layers to 1024 to avoid system hang
limitMaxMSAASamplesTo4 (OpenGL workarounds) 797243: Disabled: IsAndroid() || (IsApple() && (isIntel || isAMD || isNvidia))
Various rendering bugs have been observed when using higher MSAA counts
limitWebglMaxTextureSizeTo4096 (OpenGL workarounds) 927470: Disabled: IsAndroid() || limitMaxTextureSize
Limit webgl max texture size to 4096 to avoid frequent out-of-memory errors
packLastRowSeparatelyForPaddingInclusion (OpenGL workarounds) anglebug:1512: Enabled: IsApple() || isNvidia
When uploading textures from an pack buffer, some drivers count an extra row padding
packOverlappingRowsSeparatelyPackBuffer (OpenGL workarounds): Enabled: isNvidia
In the case of packing to a pixel pack buffer, pack overlapping rows row by row
passHighpToPackUnormSnormBuiltins (OpenGL workarounds) anglebug:7527: Disabled: isQualcomm
packUnorm4x8 fails on Pixel 4 if it is not passed a highp vec4.
preAddTexelFetchOffsets (OpenGL workarounds) 642605: Disabled: IsApple() && isIntel
Intel Mac drivers mistakenly consider the parameter position of nagative vaule as invalid even if the sum of position and offset is in range, so we need to add workarounds by rewriting texelFetchOffset(sampler, position, lod, offset) into texelFetch(sampler, position + offset, lod).
promotePackedFormatsTo8BitPerChannel (OpenGL workarounds) anglebug:5469: Disabled: IsApple() && hasAMD
Packed color formats are buggy on Macs with AMD GPUs
queryCounterBitsGeneratesErrors (OpenGL workarounds) anglebug:3027: Disabled: IsNexus5X(vendor, device)
Drivers generate errors when querying the number of bits in timer queries
readPixelsUsingImplementationColorReadFormatForNorm16 (OpenGL workarounds) anglebug:4214: Disabled: !isIntel && functions->standard == STANDARD_GL_ES && functions->isAtLeastGLES(gl::Version(3, 1)) && functions->hasGLESExtension("GL_EXT_texture_norm16")
Quite some OpenGL ES drivers don't implement readPixels for RGBA/UNSIGNED_SHORT from EXT_texture_norm16 correctly
reapplyUBOBindingsAfterUsingBinaryProgram (OpenGL workarounds) anglebug:1637: Disabled: isAMD || IsAndroid()
Some drivers forget about UBO bindings when using program binaries
regenerateStructNames (OpenGL workarounds) 403957: Disabled: IsApple()
All Mac drivers do not handle struct scopes correctly. This workaround overwrites a structname with a unique prefix.
removeDynamicIndexingOfSwizzledVector (OpenGL workarounds) 709351: Disabled: IsApple() || IsAndroid() || IsWindows()
Dynamic indexing of swizzled l-values doesn't work correctly on various platforms.
removeInvariantAndCentroidForESSL3 (OpenGL workarounds): Enabled: functions->isAtMostGL(gl::Version(4, 1)) || (functions->standard == STANDARD_GL_DESKTOP && isAMD)
Fix spec difference between GLSL 4.1 or lower and ESSL3
resetTexImage2DBaseLevel (OpenGL workarounds) 705865: Disabled: IsApple() && isIntel && GetMacOSVersion() >= OSVersion(10, 12, 4)
Reset texture base level before calling glTexImage2D to work around pixel comparison failure.
rewriteFloatUnaryMinusOperator (OpenGL workarounds) 308366: Disabled: IsApple() && isIntel && GetMacOSVersion() < OSVersion(10, 12, 0)
Using '-<float>' will get wrong answer
rewriteRepeatedAssignToSwizzled (OpenGL workarounds): Enabled: isNvidia
Repeated assignment to swizzled values inside a GLSL user-defined function have incorrect results
rewriteRowMajorMatrices (OpenGL workarounds) anglebug:2273: Disabled: false
Rewrite row major matrices in shaders as column major as a driver bug workaround
sanitizeAMDGPURendererString (OpenGL workarounds) 1181193: Disabled: IsLinux() && hasAMD
Strip precise kernel and DRM version information from amdgpu renderer strings.
setPrimitiveRestartFixedIndexForDrawArrays (OpenGL workarounds) anglebug:3997: Disabled: features->emulatePrimitiveRestartFixedIndex.enabled && IsApple() && isIntel
Some drivers discard vertex data in DrawArrays calls when the fixed primitive restart index is within the number of primitives being drawn.
setZeroLevelBeforeGenerateMipmap (OpenGL workarounds): Disabled: IsApple()
glGenerateMipmap fails if the zero texture level is not set on some Mac drivers.
shiftInstancedArrayDataWithOffset (OpenGL workarounds) 1144207: Disabled: IsApple() && IsIntel(vendor) && !IsHaswell(device)
glDrawArraysInstanced is buggy on certain new Mac Intel GPUs
supportsFragmentShaderInterlockARB (OpenGL features) anglebug:7279: Disabled: functions->isAtLeastGL(gl::Version(4, 5)) && functions->hasGLExtension("GL_ARB_fragment_shader_interlock")
Backend GL context supports ARB_fragment_shader_interlock extension
supportsFragmentShaderInterlockNV (OpenGL features) anglebug:7279: Disabled: functions->isAtLeastGL(gl::Version(4, 3)) && functions->hasGLExtension("GL_NV_fragment_shader_interlock")
Backend GL context supports NV_fragment_shader_interlock extension
supportsFragmentShaderOrderingINTEL (OpenGL features) anglebug:7279: Disabled: functions->isAtLeastGL(gl::Version(4, 4)) && functions->hasGLExtension("GL_INTEL_fragment_shader_ordering")
Backend GL context supports GL_INTEL_fragment_shader_ordering extension
supportsShaderFramebufferFetchEXT (OpenGL features) anglebug:7279: Disabled: functions->hasGLESExtension("GL_EXT_shader_framebuffer_fetch")
Backend GL context supports EXT_shader_framebuffer_fetch extension
supportsShaderFramebufferFetchNonCoherentEXT (OpenGL features) anglebug:7279: Disabled: functions->hasGLESExtension("GL_EXT_shader_framebuffer_fetch_non_coherent")
Backend GL context supports EXT_shader_framebuffer_fetch_non_coherent extension
supportsShaderPixelLocalStorageEXT (OpenGL features) anglebug:7279: Disabled: functions->hasGLESExtension("GL_EXT_shader_pixel_local_storage")
Backend GL context supports EXT_shader_pixel_local_storage extension
syncVertexArraysToDefault (OpenGL workarounds) anglebug:5577: Disabled: !nativegl::SupportsVertexArrayObjects(functions)
Only use the default VAO because of missing support or driver bugs
unbindFBOBeforeSwitchingContext (OpenGL workarounds) 1181193: Disabled: IsPowerVR(vendor)
Imagination GL drivers are buggy with context switching.
unfoldShortCircuits (OpenGL workarounds) anglebug:482: Disabled: IsApple()
Mac incorrectly executes both sides of && and || expressions when they should short-circuit.
unpackLastRowSeparatelyForPaddingInclusion (OpenGL workarounds) anglebug:1512: Enabled: IsApple() || isNvidia
When uploading textures from an unpack buffer, some drivers count an extra row padding
unpackOverlappingRowsSeparatelyUnpackBuffer (OpenGL workarounds): Enabled: isNvidia
In the case of unpacking from a pixel unpack buffer, unpack overlapping rows row by row
unsizedSRGBReadPixelsDoesntTransform (OpenGL workarounds) 550292: Disabled: IsAndroid() && isQualcomm
Drivers returning raw sRGB values instead of linearized values when calling glReadPixels on unsized sRGB texture formats
uploadTextureDataInChunks (OpenGL workarounds) 1181068: Disabled: IsApple()
Upload texture data in <120kb chunks to work around Mac driver hangs and crashes.
useUnusedBlocksWithStandardOrSharedLayout (OpenGL workarounds): Disabled: (IsApple() && functions->standard == STANDARD_GL_DESKTOP) || (IsLinux() && isAMD)
Unused std140 or shared uniform blocks will be treated as inactive
vertexIDDoesNotIncludeBaseVertex (OpenGL workarounds): Disabled: IsApple() && isAMD
gl_VertexID in GLSL vertex shader doesn't include base vertex value
DAWN Info

<CPU> Vulkan backend - SwiftShader Device (Subzero)
[Default Toggle Names]
lazy_clear_resource_on_first_use: https://crbug.com/dawn/145: Clears resource to zero on first usage. This initializes the resource so that no dirty bits from recycled memory is present in the new resource.
use_temporary_buffer_in_texture_to_texture_copy: https://crbug.com/dawn/42: Split texture-to-texture copy into two copies: copy from source texture into a temporary buffer, and copy from the temporary buffer into the destination texture when copying between compressed textures that don't have block-aligned sizes. This workaround is enabled by default on all Vulkan drivers to solve an issue in the Vulkan SPEC about the texture-to-texture copies with compressed formats. See #1005 (https://github.com/KhronosGroup/Vulkan-Docs/issues/1005) for more details.
vulkan_use_d32s8: https://crbug.com/dawn/286: Vulkan mandates support of either D32_FLOAT_S8 or D24_UNORM_S8. When available the backend will use D32S8 (toggle to on) but setting the toggle to off will make it use the D24S8 format when possible.
vulkan_use_s8: https://crbug.com/dawn/666: Vulkan has a pure stencil8 format but it is not universally available. When this toggle is on, the backend will use S8 for the stencil8 format, otherwise it will fallback to D32S8 or D24S8.
disallow_unsafe_apis: http://crbug.com/1138528: Produces validation errors on API entry points or parameter combinations that aren't considered secure yet.
use_vulkan_zero_initialize_workgroup_memory_extension: https://crbug.com/dawn/1302: Initialize workgroup memory with OpConstantNull on Vulkan when the Vulkan extension VK_KHR_zero_initialize_workgroup_memory is supported.
[WebGPU Forced Toggles - enabled]
disallow_spirv: https://crbug.com/1214923: Disallow usage of SPIR-V completely so that only WGSL is used for shader modules. This is useful to prevent a Chromium renderer process from successfully sending SPIR-V code to be compiled in the GPU process.
[Supported Features]
texture-compression-bc
texture-compression-etc2
texture-compression-astc
timestamp-query
timestamp-query-inside-passes
depth-clip-control
depth32float-stencil8
indirect-first-instance
rg11b10ufloat-renderable
dawn-internal-usages
dawn-native
Version Information
Data exported
2023-03-18T07:34:51.450Z
Chrome version
Chrome/110.0.5481.195
Operating system
Linux 5.4.0-26-generic
Software rendering list URL
https://chromium.googlesource.com/chromium/src/+/91c958182ffee0b1e606b5ffa8ba82f758770d19/gpu/config/software_rendering_list.json
Driver bug list URL
https://chromium.googlesource.com/chromium/src/+/91c958182ffee0b1e606b5ffa8ba82f758770d19/gpu/config/gpu_driver_bug_list.json
ANGLE commit id
unknown hash
2D graphics backend
Skia/110 aab9fb4100da797d25fe340e9a2fcb2ae30fc2e1
Command Line
/usr/bin/vivaldi-stable --flag-switches-begin --flag-switches-end --save-page-as-mhtml
Driver Information
Initialization time
1051
In-process GPU
false
Passthrough Command Decoder
true
Sandboxed
true
GPU0
VENDOR= 0x10de [Google Inc. (NVIDIA Corporation)], DEVICE=0x0638 [ANGLE (NVIDIA Corporation, Quadro FX 1800/PCIe/SSE2, OpenGL 3.3.0 NVIDIA 340.108)], DRIVER_VENDOR=Nvidia, DRIVER_VERSION=340.108 *ACTIVE*
Optimus
false
AMD switchable
false
GPU CUDA compute capability major version
0
Pixel shader version
1.00
Vertex shader version
1.00
Max. MSAA samples
32
Machine model name
Machine model version
GL_VENDOR
Google Inc. (NVIDIA Corporation)
GL_RENDERER
ANGLE (NVIDIA Corporation, Quadro FX 1800/PCIe/SSE2, OpenGL 3.3.0 NVIDIA 340.108)
GL_VERSION
OpenGL ES 2.0.0 (ANGLE 2.1.0 git hash: unknown hash)
GL_EXTENSIONS
GL_AMD_performance_monitor GL_ANGLE_base_vertex_base_instance GL_ANGLE_base_vertex_base_instance_shader_builtin GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_logic_op GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_external_update GL_ANGLE_texture_rectangle GL_ANGLE_translated_shader_source GL_APPLE_clip_distance GL_ARB_sync GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_base_instance GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multi_draw_indirect GL_EXT_multisample_compatibility GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_sRGB_write_control GL_EXT_shader_texture_lod GL_EXT_shadow_samplers GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_type_2_10_10_10_REV GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_NV_depth_buffer_float2 GL_NV_fence GL_NV_framebuffer_blit GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_NV_read_depth GL_NV_read_stencil GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC1_RGB8_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp 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_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture
Disabled Extensions
GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_MESA_framebuffer_flip_y GL_NV_path_rendering
Disabled WebGL Extensions
Window system binding vendor
Google Inc. (NVIDIA Corporation)
Window system binding version
1.5 (ANGLE 2.1.0 git hash: unknown hash)
Window system binding extensions
EGL_EXT_create_context_robustness EGL_KHR_create_context EGL_KHR_get_all_proc_addresses EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_NOK_texture_from_pixmap EGL_KHR_reusable_sync
XDG_SESSION_TYPE
x11
GDMSESSION
xmonad
Ozone platform
x11
Direct rendering version
unknown
Reset notification strategy
0x8252
GPU process crash count
0
gfx::BufferFormats supported for allocation and texturing
R_8: not supported, R_16: not supported, RG_88: not supported, RG_1616: not supported, BGR_565: not supported, RGBA_4444: not supported, RGBX_8888: not supported, RGBA_8888: not supported, BGRX_8888: not supported, BGRA_1010102: not supported, RGBA_1010102: not supported, BGRA_8888: not supported, RGBA_F16: not supported, YVU_420: not supported, YUV_420_BIPLANAR: not supported, YUVA_420_TRIPLANAR: not supported, P010: not supported
Compositor Information
Tile Update Mode
One-copy
Partial Raster
Enabled
GpuMemoryBuffers Status
R_8
Software only
R_16
Software only
RG_88
Software only
RG_1616
Software only
BGR_565
Software only
RGBA_4444
Software only
RGBX_8888
Software only
RGBA_8888
Software only
BGRX_8888
Software only
BGRA_1010102
Software only
RGBA_1010102
Software only
BGRA_8888
Software only
RGBA_F16
Software only
YVU_420
Software only
YUV_420_BIPLANAR
Software only
YUVA_420_TRIPLANAR
Software only
P010
Software only
Display(s) Information
Info
Display[1] bounds=[0,0 1920x1200], workarea=[0,0 1920x1200], scale=1, rotation=0, panel_rotation=0 external.
Color space (all)
{primaries:BT709, transfer:SRGB, matrix:RGB, range:FULL}
Buffer format (all)
BGRA_8888
Color volume
{name:'srgb', r:[0.6400, 0.3300], g:[0.3000, 0.6000], b:[0.1500, 0.3300], w:[0.3127, 0.3290]}
SDR white level in nits
203
HDR relative maximum luminance
1
Bits per color component
8
Bits per pixel
24
Refresh Rate in Hz
59
Video Acceleration Information
Decoding
Encoding
Vulkan Information
Device Performance Information
Log Messages
[10154:10154:0318/083209.529050:ERROR:gpu_memory_buffer_support_x11.cc(49)] : dri3 extension not supported.

--
ModEdit: </>

[DoctorG]

@MrMic I remember some users had high CPU usage with Vivaldi Mail. Do you use Vivaldi Mail client with calendar and feeds?
https://forum.vivaldi.net/topic/84766/reduce-mail-cpu-usage
Reindex of Mail database could help:
https://help.vivaldi.com/mail/mail-advanced/troubleshooting-and-debugging-vivaldi-mail/#Fix_for_a_couple_of_known_errors_re-index

Try a reinstall Vivaldi from deb package file in Shell with dpkg.

wget https://downloads.vivaldi.com/stable/vivaldi-stable_5.7.2921.63-1_amd64.deb
sudo dpkg -i vivaldi-stable_5.7.2921.63-1_amd64.deb

That issue was gone in a 5.8 Snapshot version as i remember.