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I was playing a steam game last week, no issue. Then I upgraded from Ubuntu Mate 15.04 to 15.10 and I'm getting errors.

Below is the log file. Most of it looks like gibberish to me, but mono seems to be causing a fatal problem. Anybody who knows what to do with it? Can I downgrade mono back to the previous version? Not sure how to do this so any help is appreciated.

Selecting FBConfig GLX_FBCONFIG_ID=330 GLX_BUFFER_SIZE=32 GLX_DOUBLEBUFFER=1 GLX_RED_SIZE=8 GLX_GREEN_SIZE=8 GLX_BLUE_SIZE=8 GLX_ALPHA_SIZE=8 GLX_DEPTH_SIZE=24 GLX_STENCIL_SIZE=8 GLX_SAMPLES_ARB=0 GLX_SAMPLE_BUFFERS_ARB=0 GLX_CONFIG_CAVEAT=NONE

Desktop is 1366 x 768 @ 60 Hz GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX: 1048576 OpenGL: Version: OpenGL 4.5 [4.5.0 NVIDIA 352.63] Renderer: GeForcERROR: ld.so: object '/home/jan/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored. Stacktrace:

Native stacktrace:

/home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist_Data/Mono/x86/libmono.so(+0x894bb) [0xf38204bb] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist_Data/Mono/x86/libmono.so(+0x219c3) [0xf37b89c3] [0xf7780b80] /lib/i386-linux-gnu/libc.so.6(__strcpy_chk+0x40) [0xf72993a0] /home/jan/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libasound.so.2(+0x297f3) [0xef3377f3] /home/jan/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libasound.so.2(snd_device_name_hint+0x427) [0xef338b17] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8fc1225] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8fc1548] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8fc15b0] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8fa5ecf] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x87468a0] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8746eeb] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x874b2af] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x84272ca] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x842ed0c] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x842ef5a] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8094a47] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x80a8624] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8347ffa] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x8084558] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xde) [0xf71b972e] /home/jan/.local/share/Steam/steamapps/common/AdVenture Capitalist/adventure-capitalist.x86() [0x808da65]

Debug info from gdb:

================================================================= Got a SIGSEGV while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application.

=================================================================

Preloaded type GtkListStore Preloaded type GtkWindow Preloaded type GtkVBox Preloaded type GtkImage Preloaded type GtkNotebook Preloaded type GtkHBox Preloaded type GtkFrame Preloaded type GtkAlignment Preloaded type GtkTreeView Preloaded type GtkLabel Preloaded type GtkCheckButton Preloaded type GtkScrolledWindow Preloaded type GtkComboBox Couldn't find OnScreenSelectorQuit in main module; checking child Couldn't find OnScreenSelectorOK in main module; checking child Couldn't find OnScreenSelectorQuit in main module; checking child Couldn't find OnInputListRowActivated in main module; checking child e_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_64bit 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_viewport_array GL_ARB_window_pos GL_ATI_draw_buffers GL_ATI_texture_float GL_ATI_texture_mirror_once GL_S3_s3tc GL_EXT_texture_env_add GL_EXT_abgr GL_EXT_bgra GL_EXT_bindable_uniform 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_Cg_shader GL_EXT_depth_bounds_test GL_EXT_direct_state_access 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_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 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_clamp GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback2 GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_EXT_x11_sync_object GL_EXT_import_sync_object GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_KHR_context_flush_control GL_KHR_debug GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KTX_buffer_region GL_NV_bindless_multi_draw_indirect GL_NV_bindless_multi_draw_indirect_count GL_NV_blend_equation_advanced GL_NV_blend_square GL_NV_command_list GL_NV_compute_program5 GL_NV_conditional_render GL_NV_copy_depth_to_color GL_NV_copy_image GL_NV_depth_buffer_float GL_NV_depth_clamp GL_NV_draw_texture GL_NV_ES1_1_compatibility GL_NV_ES3_1_compatibility GL_NV_explicit_multisample GL_NV_fence GL_NV_float_buffer GL_NV_fog_distance GL_NV_fragment_program GL_NV_fragment_program_option GL_NV_fragment_program2 GL_NV_framebuffer_multisample_coverage GL_NV_geometry_shader4 GL_NV_gpu_program4 GL_NV_gpu_program4_1 GL_NV_gpu_program5 GL_NV_gpu_program5_mem_extended GL_NV_gpu_program_fp64 GL_NV_gpu_shader5 GL_NV_half_float GL_NV_light_max_exponent GL_NV_multisample_coverage GL_NV_multisample_filter_hint GL_NV_occlusion_query GL_NV_packed_depth_stencil GL_NV_parameter_buffer_object GL_NV_parameter_buffer_object2 GL_NV_path_rendering GL_NV_pixel_data_range GL_NV_point_sprite GL_NV_primitive_restart GL_NV_register_combiners GL_NV_register_combiners2 GL_NV_shader_atomic_counters GL_NV_shader_atomic_float GL_NV_shader_buffer_load GL_NV_shader_storage_buffer_object GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_compression_vtc GL_NV_texture_env_combine4 GL_NV_texture_multisample GL_NV_texture_rectangle GL_NV_texture_shader GL_NV_texture_shader2 GL_NV_texture_shader3 GL_NV_transform_feedback GL_NV_transform_feedback2 GL_NV_uniform_buffer_unified_memory GL_NV_vdpau_interop GL_NV_vertex_array_range GL_NV_vertex_array_range2 GL_NV_vertex_attrib_integer_64bit GL_NV_vertex_buffer_unified_memory GL_NV_vertex_program GL_NV_vertex_program1_1 GL_NV_vertex_program2 GL_NV_vertex_program2_option GL_NV_vertex_program3 GL_NVX_conditional_render GL_NVX_gpu_memory_info GL_NV_shader_thread_group GL_KHR_blend_equation_advanced GL_SGIS_generate_mipmap GL_SGIS_texture_lod GL_SGIX_depth_texture GL_SGIX_shadow GL_SUN_slice_accum GLX Extensions: GLX_EXT_visual_info GLX_EXT_visual_rating GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGI_video_sync GLX_SGI_swap_control GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_buffer_age GLX_ARB_create_context GLX_ARB_create_context_profile GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_ARB_create_context_robustness GLX_NV_delay_before_swap GLX_EXT_stereo_tree GLX_ARB_context_flush_control GLX_ARB_multisample GLX_NV_float_buffer GLX_ARB_fbconfig_float GLX_EXT_framebuffer_sRGB GLX_NV_multisample_coverage GLX_NV_copy_image GLX_ARB_get_proc_address Setting maxVSyncInterval to 4 GL: Detected 1024 MB VRAM Initialize engine version: 5.1.2f1 (afd2369b692a)

1

I have installed ubuntu-desktop, this seems to have resolved the issue.

Edit: To install ubuntu-desktop, open terminal and enter

sudo apt-get install ubuntu-desktop

As mentioned in the question, I was running MATE (gnome2 variant as far as I can tell), not Unity which comes in the ubuntu-desktop package.

  • I appreciate you Jakke for posting your self answer but as pointed by @DavidFoerster please add command to install. Is it sudo apt-get install --reinstall ubuntu-desktop? – Ravan Dec 18 '15 at 14:44

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