When selecting OpenGL rendering, KWin_X11 hangs often and many kind of artifacts are displayed. When switching to XRender problems are gone. >glxinfo name of display: :0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 server glx 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_es2_profile, GLX_EXT_create_context_es_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_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, GLX_SGI_swap_control client glx vendor string: Mesa Project and SGI client glx version string: 1.4 client glx extensions: GLX_ARB_context_flush_control, GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync GLX version: 1.4 GLX 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_get_proc_address, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync Extended renderer info (GLX_MESA_query_renderer): Vendor: Intel Open Source Technology Center (0x8086) Device: Mesa DRI Intel(R) Bay Trail (0xf31) Version: 18.1.1 Accelerated: yes Video memory: 1536MB Unified memory: yes Preferred profile: core (0x1) Max core profile version: 4.2 Max compat profile version: 3.0 Max GLES1 profile version: 1.1 Max GLES[23] profile version: 3.0 OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Bay Trail OpenGL core profile version string: 4.2 (Core Profile) Mesa 18.1.1 OpenGL core profile shading language version string: 4.20 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth, GL_AMD_draw_buffers_blend, GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax, GL_AMD_vertex_shader_layer, GL_AMD_vertex_shader_viewport_index, GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5, GL_APPLE_object_purgeable, GL_ARB_ES2_compatibility, GL_ARB_ES3_compatibility, GL_ARB_arrays_of_arrays, GL_ARB_base_instance, GL_ARB_blend_func_extended, GL_ARB_buffer_storage, GL_ARB_clear_buffer_object, GL_ARB_clear_texture, GL_ARB_clip_control, 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_derivative_control, GL_ARB_direct_state_access, GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex, GL_ARB_draw_indirect, GL_ARB_draw_instanced, GL_ARB_enhanced_layouts, GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location, GL_ARB_fragment_coord_conventions, GL_ARB_fragment_layer_viewport, 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_gpu_shader5, GL_ARB_gpu_shader_fp64, GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_indirect_parameters, 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_multi_draw_indirect, GL_ARB_occlusion_query2, GL_ARB_pipeline_statistics_query, GL_ARB_pixel_buffer_object, GL_ARB_point_sprite, GL_ARB_polygon_offset_clamp, GL_ARB_program_interface_query, GL_ARB_provoking_vertex, 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_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_storage_buffer_object, GL_ARB_shader_subroutine, GL_ARB_shader_texture_image_samples, GL_ARB_shader_texture_lod, GL_ARB_shader_viewport_layer_array, GL_ARB_shading_language_420pack, GL_ARB_shading_language_packing, GL_ARB_sync, GL_ARB_tessellation_shader, GL_ARB_texture_barrier, GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_object_rgb32, GL_ARB_texture_buffer_range, GL_ARB_texture_compression_bptc, GL_ARB_texture_compression_rgtc, GL_ARB_texture_cube_map_array, GL_ARB_texture_filter_anisotropic, GL_ARB_texture_float, GL_ARB_texture_gather, GL_ARB_texture_mirror_clamp_to_edge, 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_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_uniform_buffer_object, GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_64bit, GL_ARB_vertex_attrib_binding, GL_ARB_vertex_shader, GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev, GL_ARB_viewport_array, GL_ATI_blend_equation_separate, GL_ATI_texture_float, GL_EXT_abgr, GL_EXT_blend_equation_separate, GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled, GL_EXT_framebuffer_sRGB, GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_pixel_buffer_object, GL_EXT_polygon_offset_clamp, GL_EXT_provoking_vertex, GL_EXT_shader_framebuffer_fetch_non_coherent, GL_EXT_shader_integer_mix, GL_EXT_shader_samples_identical, GL_EXT_texture_array, GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc, GL_EXT_texture_compression_s3tc, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer, 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_bgra, GL_IBM_multimode_draw_arrays, GL_INTEL_performance_query, GL_KHR_blend_equation_advanced, GL_KHR_context_flush_control, GL_KHR_debug, GL_KHR_no_error, GL_KHR_robust_buffer_access_behavior, GL_KHR_robustness, GL_MESA_pack_invert, GL_MESA_shader_integer_functions, GL_MESA_texture_signed_rgba, GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_packed_depth_stencil, GL_NV_texture_barrier, GL_OES_EGL_image, GL_S3_s3tc .... OpenGL version string: 3.0 Mesa 18.1.1 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth, GL_AMD_draw_buffers_blend, GL_AMD_seamless_cubemap_per_texture, 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_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_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_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_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_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_framebuffer_fetch_non_coherent, 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_context_flush_control, GL_KHR_debug, GL_KHR_no_error, GL_KHR_robust_buffer_access_behavior, GL_KHR_robustness, 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 OpenGL ES profile version string: OpenGL ES 3.0 Mesa 18.1.1 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00 OpenGL ES profile extensions: GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5, GL_APPLE_texture_max_level, GL_EXT_blend_func_extended, GL_EXT_blend_minmax, GL_EXT_clip_cull_distance, GL_EXT_color_buffer_float, GL_EXT_compressed_ETC1_RGB8_sub_texture, GL_EXT_copy_image, GL_EXT_discard_framebuffer, GL_EXT_disjoint_timer_query, GL_EXT_draw_buffers, GL_EXT_draw_buffers_indexed, GL_EXT_draw_elements_base_vertex, GL_EXT_frag_depth, GL_EXT_map_buffer_range, GL_EXT_multi_draw_arrays, GL_EXT_occlusion_query_boolean, GL_EXT_polygon_offset_clamp, GL_EXT_read_format_bgra, GL_EXT_robustness, GL_EXT_separate_shader_objects, GL_EXT_shader_framebuffer_fetch_non_coherent, GL_EXT_shader_integer_mix, GL_EXT_texture_border_clamp, GL_EXT_texture_compression_dxt1, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888, GL_EXT_texture_rg, GL_EXT_texture_sRGB_decode, GL_EXT_texture_type_2_10_10_10_REV, GL_EXT_unpack_subimage, GL_INTEL_performance_query, GL_KHR_blend_equation_advanced, GL_KHR_context_flush_control, GL_KHR_debug, GL_KHR_no_error, GL_KHR_robust_buffer_access_behavior, GL_KHR_robustness, GL_MESA_shader_integer_functions, GL_NV_draw_buffers, GL_NV_fbo_color_attachments, GL_NV_read_buffer, GL_NV_read_depth, GL_NV_read_depth_stencil, GL_NV_read_stencil, GL_OES_EGL_image, GL_OES_EGL_image_external, GL_OES_EGL_image_external_essl3, GL_OES_EGL_sync, GL_OES_compressed_ETC1_RGB8_texture, GL_OES_copy_image, GL_OES_depth24, GL_OES_depth_texture, GL_OES_depth_texture_cube_map, GL_OES_draw_buffers_indexed, 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_required_internalformat, GL_OES_rgb8_rgba8, GL_OES_sample_shading, GL_OES_sample_variables, GL_OES_shader_multisample_interpolation, GL_OES_standard_derivatives, GL_OES_stencil8, 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_vertex_array_object, GL_OES_vertex_half_float >hwinfo ...... 22: PCI 02.0: 0300 VGA compatible controller (VGA) [Created at pci.378] Unique ID: _Znp.MWWyIye5OX1 SysFS ID: /devices/pci0000:00/0000:00:02.0 SysFS BusID: 0000:00:02.0 Hardware Class: graphics card Model: "Intel Atom Processor Z36xxx/Z37xxx Series Graphics & Display" Vendor: pci 0x8086 "Intel Corporation" Device: pci 0x0f31 "Atom Processor Z36xxx/Z37xxx Series Graphics & Display" SubVendor: pci 0x17aa "Lenovo" SubDevice: pci 0x3909 Revision: 0x0e Driver: "i915" Driver Modules: "i915" Memory Range: 0x90000000-0x903fffff (rw,non-prefetchable) Memory Range: 0x80000000-0x8fffffff (ro,non-prefetchable) I/O Ports: 0x3050-0x3057 (rw) Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled) IRQ: 92 (11395 events) Module Alias: "pci:v00008086d00000F31sv000017AAsd00003909bc03sc00i00" Driver Info #0: Driver Status: i915 is active Driver Activation Cmd: "modprobe i915" Config Status: cfg=no, avail=yes, need=no, active=unknown .... I will attach more information if you ask
This issue report is quite old. Can you please confirm, that it still persists with KDE 5.23?
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Problem probably was gone. I do not even remember on which computer I was found it. Member of my family use old computer and do not complains about hangs, so probably problem was gone. I was use Wayland currently and probably problem occur on X.org.
User cannot reproduce anymore