Krita flashing betwen normal and dark program window screen. Itryed to cach video from this problem but on cached video dosnt showing this bug. All redy tryed many versions of krita.. =( SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Can you take a video with a camera or a phone?
Also, please provide system information -- help->system information for bug reports.
*** Bug 452826 has been marked as a duplicate of this bug. ***
Could it be related this: https://old.reddit.com/r/nvidia/comments/u8cf2p/gsync_and_photoshop_screen_flickering_issues/ ?
Setting Krita to fixed refresh in NVIDIA Control Panel while having g-sync enabled for windowed and fullscreen does surprisingly not fix it, and makes the entire screen blink black instead (not just the Krita window)
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System information from krita help: Krita Version: 5.0.5 Installation type: installer / portable package Languages: en_GB, en, en_US, en Hidpi: false Qt Version (compiled): 5.12.12 Version (loaded): 5.12.12 OS Information Build ABI: x86_64-little_endian-llp64 Build CPU: x86_64 CPU: x86_64 Kernel Type: winnt Kernel Version: 10.0.19044 Pretty Productname: Windows 10 (10.0) Product Type: windows Product Version: 10 OpenGL Info Vendor: "Google Inc." Renderer: "ANGLE (NVIDIA GeForce RTX 2080 Direct3D11 vs_5_0 ps_5_0)" Version: "OpenGL ES 3.0 (ANGLE 2.1.0.57ea533f79a7)" Shading language: "OpenGL ES GLSL ES 3.00 (ANGLE 2.1.0.57ea533f79a7)" Requested format: QSurfaceFormat(version 3.0, options QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::CompatibilityProfile) Current format: QSurfaceFormat(version 3.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile) Version: 3.0 Supports deprecated functions false is OpenGL ES: true supportsBufferMapping: true supportsBufferInvalidation: false Extensions: "GL_OES_texture_npot" "GL_EXT_texture_filter_anisotropic" "GL_CHROMIUM_sync_query" "GL_EXT_debug_marker" "GL_NV_fence" "GL_ANGLE_texture_compression_dxt3" "GL_OES_texture_float" "GL_ANGLE_client_arrays" "GL_OES_element_index_uint" "GL_EXT_color_buffer_half_float" "GL_CHROMIUM_color_buffer_float_rgba" "GL_EXT_texture_storage" "GL_ANGLE_program_cache_control" "GL_EXT_sRGB" "GL_EXT_texture_format_BGRA8888" "GL_ANGLE_request_extension" "GL_EXT_read_format_bgra" "GL_EXT_texture_norm16" "GL_EXT_frag_depth" "GL_OES_vertex_array_object" "GL_NV_pixel_buffer_object" "GL_EXT_occlusion_query_boolean" "GL_OES_standard_derivatives" "GL_ANGLE_framebuffer_blit" "GL_EXT_color_buffer_float" "GL_ANGLE_texture_usage" "GL_EXT_robustness" "GL_OES_mapbuffer" "GL_ANGLE_translated_shader_source" "GL_EXT_map_buffer_range" "GL_OES_texture_half_float_linear" "GL_CHROMIUM_bind_generates_resource" "GL_OES_texture_half_float" "GL_CHROMIUM_color_buffer_float_rgb" "GL_ANGLE_depth_texture" "GL_OES_depth32" "GL_OES_get_program_binary" "GL_OES_EGL_image_external" "GL_OES_packed_depth_stencil" "GL_EXT_discard_framebuffer" "GL_CHROMIUM_bind_uniform_location" "GL_CHROMIUM_copy_texture" "GL_ANGLE_framebuffer_multisample" "GL_OES_texture_float_linear" "GL_NV_EGL_stream_consumer_external" "GL_NV_pack_subimage" "GL_ANGLE_lossy_etc_decode" "GL_ANGLE_texture_compression_dxt5" "GL_EXT_disjoint_timer_query" "GL_OES_compressed_ETC1_RGB8_texture" "" "GL_EXT_texture_rg" "GL_EXT_blend_minmax" "GL_ANGLE_multiview" "GL_OES_EGL_image_external_essl3" "GL_EXT_unpack_subimage" "GL_KHR_debug" "GL_ANGLE_robust_client_memory" "GL_OES_surfaceless_context" "GL_ANGLE_instanced_arrays" "GL_EXT_draw_buffers" "GL_EXT_texture_compression_dxt1" "GL_EXT_texture_compression_s3tc_srgb" "GL_CHROMIUM_copy_compressed_texture" "GL_EXT_shader_texture_lod" "GL_OES_rgb8_rgba8" "GL_OES_EGL_image" "GL_ANGLE_pack_reverse_row_order" QPA OpenGL Detection Info supportsDesktopGL: true supportsAngleD3D11: true isQtPreferAngle: true useBufferInvalidation (config option): false Hardware Information GPU Acceleration: auto Memory: 16333 Mb Number of Cores: 12 Swap Location: C:/Users/TheWizier/AppData/Local/Temp Current Settings Current Swap Location: C:/Users/TheWizier/AppData/Local/Temp Current Swap Location writable: true Undo Enabled: true Undo Stack Limit: 60 Use OpenGL: true Use OpenGL Texture Buffer: true Disable Vector Optimizations: false Disable AVX Optimizations: false Canvas State: OPENGL_SUCCESS Autosave Interval: 900 Use Backup Files: true Number of Backups Kept: 1 Backup File Suffix: ~ Backup Location: Same Folder as the File Backup Location writable: false Use Win8 Pointer Input: false Use RightMiddleTabletButton Workaround: false Levels of Detail Enabled: false Use Zip64: false Display Information Number of screens: 1 Screen: 0 Name: \\.\DISPLAY1 Depth: 32 Scale: 1 Resolution in pixels: 2560x1440 Manufacturer: Model: Refresh Rate: 144
Video of issue: https://youtu.be/B927RPCUzME
That definitely looks like a display driver problem. You could also try to switch from Angle to OpenGL -- that uses a different driver and might work better on an NVidia card.
Switching to OpenGL resolves the issue for me. So it must be a problem with the DirectX Angle renderer.
Thanks for checking! That means it's outside of Krita's codebase, though. (We use the same opengl code to render the image, just access a different driver)
If possible you should complain to NVIDIA about their driver breaking applications. Other than that, since none of the Krita developers have an NVIDIA plus g-sync setup there isn't much we can do, sorry.