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  1. Qt
  2. QTBUG-116023

QXcbConnection: XCB error occured on QVulkanWindowRenderer Subclass

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Details

    • Bug
    • Resolution: Incomplete
    • P2: Important
    • None
    • 6.2.4
    • GUI: Vulkan
    • None
    • OS: Ubuntu 22.04.3 LTS
      Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
      Debugger: GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1
      Build System: cmake version 3.22.1
    • Linux/X11

    Description

      I got that error:

      qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 487, resource id: 81788949, major code: 149 (Unknown), minor code: 4
qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 490, resource id: 81788952, major code: 149 (Unknown), minor code: 4
qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 493, resource id: 81788955, major code: 149 (Unknown), minor code: 4

      This error seems to be related to QVulkanWindowRenderer, as it occurred after QVulkanWindowRenderer was initialized. Here is the output from the Qt hellovulkantexture(the error reoccured there. I've only added some extra 'qDebug' statements for clarity):

      qt.vulkan: Vulkan init (libvulkan.so)
qt.vulkan: Supported Vulkan instance layers: QList(QVulkanLayer("VK_LAYER_VALVE_steam_fossilize_32" 1 1.3.207 "Steam Pipeline Caching Layer"), QVulkanLayer("VK_LAYER_VALVE_steam_fossilize_64" 1 1.3.207 "Steam Pipeline Caching Layer"), QVulkanLayer("VK_LAYER_VALVE_steam_overlay_64" 1 1.3.207 "Steam Overlay Layer"), QVulkanLayer("VK_LAYER_VALVE_steam_overlay_32" 1 1.3.207 "Steam Overlay Layer"), QVulkanLayer("VK_LAYER_MESA_device_select" 1 1.3.211 "Linux device selection layer"), QVulkanLayer("VK_LAYER_INTEL_nullhw" 1 1.1.73 "INTEL NULL HW"), QVulkanLayer("VK_LAYER_MESA_overlay" 1 1.3.211 "Mesa Overlay layer"))
qt.vulkan: Supported Vulkan instance extensions: QList(QVulkanExtension("VK_KHR_device_group_creation" 1), QVulkanExtension("VK_KHR_external_fence_capabilities" 1), QVulkanExtension("VK_KHR_external_memory_capabilities" 1), QVulkanExtension("VK_KHR_external_semaphore_capabilities" 1), QVulkanExtension("VK_KHR_get_physical_device_properties2" 2), QVulkanExtension("VK_KHR_get_surface_capabilities2" 1), QVulkanExtension("VK_KHR_surface" 25), QVulkanExtension("VK_KHR_surface_protected_capabilities" 1), QVulkanExtension("VK_KHR_wayland_surface" 6), QVulkanExtension("VK_KHR_xcb_surface" 6), QVulkanExtension("VK_KHR_xlib_surface" 6), QVulkanExtension("VK_EXT_debug_report" 10), QVulkanExtension("VK_EXT_debug_utils" 2), QVulkanExtension("VK_KHR_display" 23), QVulkanExtension("VK_KHR_get_display_properties2" 1), QVulkanExtension("VK_EXT_acquire_drm_display" 1), QVulkanExtension("VK_EXT_acquire_xlib_display" 1), QVulkanExtension("VK_EXT_direct_mode_display" 1), QVulkanExtension("VK_EXT_display_surface_counter" 1), QVulkanExtension("VK_EXT_swapchain_colorspace" 4))
qt.vulkan: Enabling Vulkan instance layers: QList()
qt.vulkan: Enabling Vulkan instance extensions: QList("VK_EXT_debug_report", "VK_KHR_surface", "VK_KHR_xcb_surface")
qt.vulkan: QVulkanWindow init
qt.vulkan: 3 physical devices
qt.vulkan: Physical device [0]: name 'Intel(R) Graphics (RPL-S)' version 23.0.4
qt.vulkan: Physical device [1]: name 'NVIDIA GeForce RTX 4090 Laptop GPU' version 535.344.640
qt.vulkan: Physical device [2]: name 'llvmpipe (LLVM 15.0.7, 256 bits)' version 0.0.1
qt.vulkan: Using physical device [0]
qt.vulkan: queue family 0: flags=0x7 count=1 supportsPresent=1
qt.vulkan: Using queue families: graphics = 0 present = 0
qt.vulkan: Supported device extensions: QList(QVulkanExtension("VK_KHR_8bit_storage" 1), QVulkanExtension("VK_KHR_16bit_storage" 1), QVulkanExtension("VK_KHR_bind_memory2" 1), QVulkanExtension("VK_KHR_buffer_device_address" 1), QVulkanExtension("VK_KHR_copy_commands2" 1), QVulkanExtension("VK_KHR_create_renderpass2" 1), QVulkanExtension("VK_KHR_dedicated_allocation" 3), QVulkanExtension("VK_KHR_deferred_host_operations" 4), QVulkanExtension("VK_KHR_depth_stencil_resolve" 1), QVulkanExtension("VK_KHR_descriptor_update_template" 1), QVulkanExtension("VK_KHR_device_group" 4), QVulkanExtension("VK_KHR_draw_indirect_count" 1), QVulkanExtension("VK_KHR_driver_properties" 1), QVulkanExtension("VK_KHR_dynamic_rendering" 1), QVulkanExtension("VK_KHR_external_fence" 1), QVulkanExtension("VK_KHR_external_fence_fd" 1), QVulkanExtension("VK_KHR_external_memory" 1), QVulkanExtension("VK_KHR_external_memory_fd" 1), QVulkanExtension("VK_KHR_external_semaphore" 1), QVulkanExtension("VK_KHR_external_semaphore_fd" 1), QVulkanExtension("VK_KHR_format_feature_flags2" 2), QVulkanExtension("VK_KHR_fragment_shading_rate" 2), QVulkanExtension("VK_KHR_get_memory_requirements2" 1), QVulkanExtension("VK_KHR_image_format_list" 1), QVulkanExtension("VK_KHR_imageless_framebuffer" 1), QVulkanExtension("VK_KHR_incremental_present" 2), QVulkanExtension("VK_KHR_maintenance1" 2), QVulkanExtension("VK_KHR_maintenance2" 1), QVulkanExtension("VK_KHR_maintenance3" 1), QVulkanExtension("VK_KHR_maintenance4" 2), QVulkanExtension("VK_KHR_multiview" 1), QVulkanExtension("VK_KHR_pipeline_executable_properties" 1), QVulkanExtension("VK_KHR_pipeline_library" 1), QVulkanExtension("VK_KHR_present_id" 1), QVulkanExtension("VK_KHR_present_wait" 1), QVulkanExtension("VK_KHR_push_descriptor" 2), QVulkanExtension("VK_KHR_relaxed_block_layout" 1), QVulkanExtension("VK_KHR_sampler_mirror_clamp_to_edge" 3), QVulkanExtension("VK_KHR_sampler_ycbcr_conversion" 14), QVulkanExtension("VK_KHR_separate_depth_stencil_layouts" 1), QVulkanExtension("VK_KHR_shader_atomic_int64" 1), QVulkanExtension("VK_KHR_shader_clock" 1), QVulkanExtension("VK_KHR_shader_draw_parameters" 1), QVulkanExtension("VK_KHR_shader_float16_int8" 1), QVulkanExtension("VK_KHR_shader_float_controls" 4), QVulkanExtension("VK_KHR_shader_integer_dot_product" 1), QVulkanExtension("VK_KHR_shader_non_semantic_info" 1), QVulkanExtension("VK_KHR_shader_subgroup_extended_types" 1), QVulkanExtension("VK_KHR_shader_subgroup_uniform_control_flow" 1), QVulkanExtension("VK_KHR_shader_terminate_invocation" 1), QVulkanExtension("VK_KHR_spirv_1_4" 1), QVulkanExtension("VK_KHR_storage_buffer_storage_class" 1), QVulkanExtension("VK_KHR_swapchain" 70), QVulkanExtension("VK_KHR_swapchain_mutable_format" 1), QVulkanExtension("VK_KHR_synchronization2" 1), QVulkanExtension("VK_KHR_timeline_semaphore" 2), QVulkanExtension("VK_KHR_uniform_buffer_standard_layout" 1), QVulkanExtension("VK_KHR_variable_pointers" 1), QVulkanExtension("VK_KHR_vulkan_memory_model" 3), QVulkanExtension("VK_KHR_workgroup_memory_explicit_layout" 1), QVulkanExtension("VK_KHR_zero_initialize_workgroup_memory" 1), QVulkanExtension("VK_EXT_4444_formats" 1), QVulkanExtension("VK_EXT_border_color_swizzle" 1), QVulkanExtension("VK_EXT_buffer_device_address" 2), QVulkanExtension("VK_EXT_calibrated_timestamps" 2), QVulkanExtension("VK_EXT_color_write_enable" 1), QVulkanExtension("VK_EXT_conditional_rendering" 2), QVulkanExtension("VK_EXT_conservative_rasterization" 1), QVulkanExtension("VK_EXT_custom_border_color" 12), QVulkanExtension("VK_EXT_depth_clamp_zero_one" 1), QVulkanExtension("VK_EXT_depth_clip_control" 1), QVulkanExtension("VK_EXT_depth_clip_enable" 1), QVulkanExtension("VK_EXT_descriptor_indexing" 2), QVulkanExtension("VK_EXT_display_control" 1), QVulkanExtension("VK_EXT_extended_dynamic_state" 1), QVulkanExtension("VK_EXT_extended_dynamic_state2" 1), QVulkanExtension("VK_EXT_extended_dynamic_state3" 2), QVulkanExtension("VK_EXT_external_memory_dma_buf" 1), QVulkanExtension("VK_EXT_external_memory_host" 1), QVulkanExtension("VK_EXT_fragment_shader_interlock" 1), QVulkanExtension("VK_EXT_global_priority" 2), QVulkanExtension("VK_EXT_global_priority_query" 1), QVulkanExtension("VK_EXT_host_query_reset" 1), QVulkanExtension("VK_EXT_image_2d_view_of_3d" 1), QVulkanExtension("VK_EXT_image_drm_format_modifier" 2), QVulkanExtension("VK_EXT_image_robustness" 1), QVulkanExtension("VK_EXT_image_view_min_lod" 1), QVulkanExtension("VK_EXT_index_type_uint8" 1), QVulkanExtension("VK_EXT_inline_uniform_block" 1), QVulkanExtension("VK_EXT_line_rasterization" 1), QVulkanExtension("VK_EXT_memory_budget" 1), QVulkanExtension("VK_EXT_multi_draw" 1), QVulkanExtension("VK_EXT_mutable_descriptor_type" 1), QVulkanExtension("VK_EXT_non_seamless_cube_map" 1), QVulkanExtension("VK_EXT_pci_bus_info" 2), QVulkanExtension("VK_EXT_physical_device_drm" 1), QVulkanExtension("VK_EXT_pipeline_creation_cache_control" 3), QVulkanExtension("VK_EXT_pipeline_creation_feedback" 1), QVulkanExtension("VK_EXT_post_depth_coverage" 1), QVulkanExtension("VK_EXT_primitive_topology_list_restart" 1), QVulkanExtension("VK_EXT_primitives_generated_query" 1), QVulkanExtension("VK_EXT_private_data" 1), QVulkanExtension("VK_EXT_provoking_vertex" 1), QVulkanExtension("VK_EXT_queue_family_foreign" 1), QVulkanExtension("VK_EXT_robustness2" 1), QVulkanExtension("VK_EXT_sample_locations" 1), QVulkanExtension("VK_EXT_sampler_filter_minmax" 2), QVulkanExtension("VK_EXT_scalar_block_layout" 1), QVulkanExtension("VK_EXT_separate_stencil_usage" 1), QVulkanExtension("VK_EXT_shader_atomic_float" 1), QVulkanExtension("VK_EXT_shader_atomic_float2" 1), QVulkanExtension("VK_EXT_shader_demote_to_helper_invocation" 1), QVulkanExtension("VK_EXT_shader_module_identifier" 1), QVulkanExtension("VK_EXT_shader_stencil_export" 1), QVulkanExtension("VK_EXT_shader_subgroup_ballot" 1), QVulkanExtension("VK_EXT_shader_subgroup_vote" 1), QVulkanExtension("VK_EXT_shader_viewport_index_layer" 1), QVulkanExtension("VK_EXT_subgroup_size_control" 2), QVulkanExtension("VK_EXT_texel_buffer_alignment" 1), QVulkanExtension("VK_EXT_tooling_info" 1), QVulkanExtension("VK_EXT_transform_feedback" 1), QVulkanExtension("VK_EXT_vertex_attribute_divisor" 3), QVulkanExtension("VK_EXT_ycbcr_image_arrays" 1), QVulkanExtension("VK_GOOGLE_decorate_string" 1), QVulkanExtension("VK_GOOGLE_hlsl_functionality1" 1), QVulkanExtension("VK_GOOGLE_user_type" 1), QVulkanExtension("VK_INTEL_shader_integer_functions2" 1), QVulkanExtension("VK_NV_compute_shader_derivatives" 1), QVulkanExtension("VK_VALVE_mutable_descriptor_type" 1))
qt.vulkan: Enabling device extensions: QList(VK_KHR_swapchain)
qt.vulkan: memtype 0: flags=0xf
qt.vulkan: Picked memtype 0 for host visible memory
qt.vulkan: Picked memtype 0 for device local memory
qt.vulkan: Color format: 50 Depth-stencil format: 129
void VulkanRenderer::initResources()
uniform buffer offset alignment is 64
allocating 262144 bytes for texture image
qt.vulkan: Creating new swap chain of 3 buffers, size 1280x960
qt.vulkan: Actual swap chain buffer count: 3 (supportsReadback=1)
qt.vulkan: Allocating 7077888 bytes for transient image (memtype 0)
void VulkanRenderer::initSwapChainResources()
qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 408, resource id: 81788940, major code: 149 (Unknown), minor code: 4
qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 411, resource id: 81788943, major code: 149 (Unknown), minor code: 4
qt.qpa.xcb: QXcbConnection: XCB error: 8 (BadMatch), sequence: 414, resource id: 81788946, major code: 149 (Unknown), minor code: 4
QVulkanWindow: Failed to acquire next swapchain image: -1000000000 
...... 
QVulkanWindow: Failed to acquire next swapchain image: -1000000000
qt.vulkan: Releasing swapchain
void VulkanRenderer::releaseSwapChainResources()
qt.vulkan: QVulkanWindow reset
void VulkanRenderer::releaseResources()

      That error doesn't break the program, but it still disrupts the rendering. I suspect it might be related to my computer environment, but I'm unsure how to fix it.

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            qt.team.graphics.and.multimedia Qt Graphics Team
            garden_eel Zhou GaDoon
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