Hi, On 15/03/21 at 09:07 +0900, Ryutaroh Matsumoto wrote: > Hi Lucas, > > > According to strace, it fails because /dev/dri does not exist. > > When vc4.ko is not loaded, /dev/dri does not exist. > If vc4.ko is loaded, /dev/dri exists. Could you make sure that > vc4.ko is loaded by "lsmod | fgrep vc4"? > vc4.ko was disabled at Debian kernel 5.10.9. > Other Debian 5.10.? kernel packages have vc4.ko.
Right, sorry, I was testing with the wrong kernel. > When vc4.ko is loaded, kmscube fails as: > > $ kmscube > Using display 0xaaaae087a150 with EGL version 1.4 > =================================== > EGL information: > version: "1.4" > vendor: "Mesa Project" > client extensions: "EGL_EXT_device_base EGL_EXT_device_enumeration > EGL_EXT_device_query EGL_EXT_platform_base > EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug > EGL_EXT_platform_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland > EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_MESA_platform_gbm > EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless" > display extensions: "EGL_ANDROID_blob_cache EGL_EXT_buffer_age > EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers > EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context > EGL_KHR_create_context_no_error EGL_KHR_fence_sync > EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace > EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image > EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image > EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context > EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float > EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_image_dma_buf_export > EGL_MESA_query_driver " > =================================== > OpenGL ES 2.x information: > version: "OpenGL ES 3.2 Mesa 20.3.4" > shading language version: "OpenGL ES GLSL ES 3.20" > vendor: "Mesa/X.org" > renderer: "llvmpipe (LLVM 11.0.1, 128 bits)" > extensions: "GL_EXT_blend_minmax GL_EXT_multi_draw_arrays > GL_EXT_texture_compression_s3tc GL_EXT_texture_compression_dxt1 > GL_EXT_texture_compression_rgtc GL_EXT_texture_format_BGRA8888 > GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_element_index_uint > GL_OES_fbo_render_mipmap GL_OES_mapbuffer GL_OES_rgb8_rgba8 > GL_OES_standard_derivatives GL_OES_stencil8 GL_OES_texture_3D > 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_half_float > GL_EXT_draw_instanced GL_EXT_texture_sRGB_decode GL_OES_EGL_image > GL_OES_depth_texture GL_OES_packed_depth_stencil > GL_EXT_texture_type_2_10_10_10_REV GL_NV_conditional_render > GL_OES_get_program_binary GL_APPLE_texture_max_level > GL_EXT_discard_framebuffer GL_EXT_read_format_bgra GL_EXT_frag_depth > GL_NV_fbo_color_attachments GL_OES_EGL_image_external GL_OES_EGL_sync > GL_OES_vertex_array_object GL_OES_viewport_array > GL_ANGLE_pack_reverse_row_order GL_ANGLE_texture_compression_dxt3 > GL_ANGLE_texture_compression_dxt5 GL_EXT_occlusion_query_boolean > GL_EXT_robustness GL_EXT_texture_rg GL_EXT_unpack_subimage GL_NV_draw_buffers > GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil > GL_NV_read_stencil GL_EXT_draw_buffers GL_EXT_map_buffer_range GL_KHR_debug > GL_KHR_robustness GL_KHR_texture_compression_astc_ldr > GL_NV_pixel_buffer_object GL_OES_depth_texture_cube_map > GL_OES_required_internalformat GL_OES_surfaceless_context > GL_EXT_color_buffer_float GL_EXT_sRGB_write_control > GL_EXT_separate_shader_objects GL_EXT_shader_group_vote > GL_EXT_shader_implicit_conversions GL_EXT_shader_integer_mix > GL_EXT_tessellation_point_size GL_EXT_tessellation_shader > GL_ANDROID_extension_pack_es31a GL_EXT_base_instance > GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_copy_image > GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex > GL_EXT_gpu_shader5 GL_EXT_polygon_offset_clamp GL_EXT_primitive_bounding_box > GL_EXT_render_snorm GL_EXT_shader_io_blocks GL_EXT_texture_border_clamp > GL_EXT_texture_buffer GL_EXT_texture_cube_map_array GL_EXT_texture_norm16 > GL_EXT_texture_view GL_KHR_blend_equation_advanced > GL_KHR_context_flush_control GL_KHR_robust_buffer_access_behavior > GL_NV_image_formats GL_OES_copy_image GL_OES_draw_buffers_indexed > GL_OES_draw_elements_base_vertex GL_OES_gpu_shader5 > GL_OES_primitive_bounding_box GL_OES_sample_shading GL_OES_sample_variables > GL_OES_shader_io_blocks GL_OES_shader_multisample_interpolation > GL_OES_tessellation_point_size GL_OES_tessellation_shader > GL_OES_texture_border_clamp GL_OES_texture_buffer > GL_OES_texture_cube_map_array GL_OES_texture_stencil8 > GL_OES_texture_storage_multisample_2d_array GL_OES_texture_view > GL_EXT_blend_func_extended GL_EXT_buffer_storage GL_EXT_float_blend > GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_KHR_no_error > GL_KHR_texture_compression_astc_sliced_3d GL_OES_EGL_image_external_essl3 > GL_OES_geometry_point_size GL_OES_geometry_shader GL_OES_shader_image_atomic > GL_EXT_clip_cull_distance GL_EXT_disjoint_timer_query > GL_EXT_texture_compression_s3tc_srgb GL_MESA_shader_integer_functions > GL_EXT_clip_control GL_EXT_color_buffer_half_float > GL_EXT_texture_compression_bptc GL_KHR_parallel_shader_compile > GL_EXT_EGL_image_storage GL_EXT_shader_framebuffer_fetch_non_coherent > GL_EXT_texture_sRGB_R8 GL_EXT_texture_shadow_lod GL_MESA_framebuffer_flip_y > GL_EXT_depth_clamp GL_EXT_texture_query_lod " > =================================== > Using modifier ffffffffffffff > failed to set mode: Invalid argument I can confirm that behaviour with kernel version 5.10.19-1. Tracing with strace: write(1, "Using modifier ffffffffffffff\n", 30Using modifier ffffffffffffff ) = 30 ioctl(3, DRM_IOCTL_MODE_ADDFB2, 0xffffc6e78ab0) = 0 ioctl(3, DRM_IOCTL_MODE_SETCRTC, 0xffffc6e78bb0) = -1 EACCES (Permission denied) write(1, "failed to set mode: Permission d"..., 38failed to set mode: Permission denied ) = 38 futex(0xaaaae9705318, FUTEX_WAKE_PRIVATE, 2147483647) = 4 futex(0xaaaae97052c0, FUTEX_WAKE_PRIVATE, 1) = 1 getpid() = 1052 exit_group(-13) = ? +++ exited with 243 +++ Lucas
