dual monitor approaches
Posted: 2. Nov 2018, 00:53
I'm running 5.2.20 on a Linux laptop with an external screen attached. In general, it works really well 
Now I'd like to be able to use both screens in my Windows 10 guest.
Having 2 virtual screens works, in the sense that I can have a virtual screen on each physical monitor. But when I open a program in the Windows guest, I can't control which virtual screen the program opens in. I'd expect it to open in the virtual screen I launched it from, but it doesn't. I've experimented using File Explorer and Word 2016. Any tips?
So instead, I've resized a virtual screen so it extends across both monitors. This works somewhat, but there seems to be a maximum horizontal resolution of 4499? If I keep enlarging the Window, it suddenly shrinks down to some default size (1024x768 i guess), see logs below. I've tried setting maximum guest screen size to "None" and to "Hint" (with large values), but that doesn't seem to help, so I'm back on "Automatic".
I guess its an interaction with my X settings:
I have Nvidia scaling the screens to 2560x1600 (laptop) and 1600x2560, so I'm looking to extend the virtual screen to say 4160 wide. (not sure where VirtualBox is getting 4499 from, but I guess that's a pre-scaled value)
thanks for any insights .. Jason
Now I'd like to be able to use both screens in my Windows 10 guest.
Having 2 virtual screens works, in the sense that I can have a virtual screen on each physical monitor. But when I open a program in the Windows guest, I can't control which virtual screen the program opens in. I'd expect it to open in the virtual screen I launched it from, but it doesn't. I've experimented using File Explorer and Word 2016. Any tips?
So instead, I've resized a virtual screen so it extends across both monitors. This works somewhat, but there seems to be a maximum horizontal resolution of 4499? If I keep enlarging the Window, it suddenly shrinks down to some default size (1024x768 i guess), see logs below. I've tried setting maximum guest screen size to "None" and to "Hint" (with large values), but that doesn't seem to help, so I'm back on "Automatic".
I guess its an interaction with my X settings:
Code: Select all
Option "metamodes" "DP-6: 3840x2160 +0+1936 {viewportin=2560x1600, ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}, DP-9: nvidia-auto-select +2560+0 {rotation=left, ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
thanks for any insights .. Jason
Code: Select all
00:01:18.014617 GUI: UIMachineView::sltPerformGuestResize: Sending guest size-hint to screen 0 as 4499x1440 if necessary
00:01:18.014654 VMMDev: SetVideoModeHint: Got a video mode hint (4499x1440x32)@(0x0),(1;0) at 0
00:01:18.014744 GUI: UIMachineView::sltPerformGuestResize: Sending guest size-hint to screen 0 as 4499x1440 if necessary
00:01:18.014759 GUI: UIMachineView::sltPerformGuestResize: Sending guest size-hint to screen 0 as 4499x1440 if necessary
00:01:18.017398 GUI: UIMediumEnumerator: Medium-enumeration finished!
00:01:18.058001 Display::handleDisplayResize: uScreenId=0 pvVRAM=00007feb3633c000 w=4499 h=1440 bpp=32 cbLine=0x464C flags=0x0
00:01:18.058062 GUI: UIFrameBufferPrivate::NotifyChange: Screen=0, Origin=0x0, Size=4499x1440, Sending to async-handler
00:01:18.058104 GUI: UIMachineView::sltHandleNotifyChange: Screen=0, Size=4499x1440
00:01:18.058117 GUI: UIFrameBufferPrivate::handleNotifyChange: Size=4499x1440
00:01:18.058128 GUI: UIFrameBufferPrivate::performResize: Size=4499x1440, Directly using source bitmap content
00:01:18.068390 VBVA: InfoScreen: [0] @0,0 4499x1440, line 0x464c, BPP 32, flags 0x1
00:01:18.068412 Display::handleDisplayResize: uScreenId=0 pvVRAM=00007feb3633c000 w=4499 h=1440 bpp=32 cbLine=0x464C flags=0x1
00:01:18.068443 GUI: UIFrameBufferPrivate::NotifyChange: Screen=0, Origin=0x0, Size=4499x1440, Sending to async-handler
00:01:18.072628 GUI: UIMachineView::storeGuestSizeHint: Storing guest-screen size-hint for screen 0 as 4499x1440
00:01:18.113060 GUI: UIMachineView::sltHandleNotifyChange: Screen=0, Size=4499x1440
00:01:18.113093 GUI: UIFrameBufferPrivate::handleNotifyChange: Size=4499x1440
00:01:18.113107 GUI: UIFrameBufferPrivate::performResize: Size=4499x1440, Directly using source bitmap content
00:01:18.113289 GUI: UIMachineView::storeGuestSizeHint: Storing guest-screen size-hint for screen 0 as 4499x1440
00:01:18.141429 GUI: UIMediumEnumerator: Medium-enumeration finished!
00:01:18.261788 GUI: UIMachineView::sltPerformGuestResize: Sending guest size-hint to screen 0 as 4499x1440 if necessary
00:01:18.508772 VMMDev: Guest Additions capability report: (0x5 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:01:18.508892 GUI: UISession::sltAdditionsChange: GA state really changed, notifying listeners.
00:01:18.508916 GUI: UIMachineViewNormal::adjustGuestScreenSize: Adjust guest-screen size if necessary.
00:01:18.508921 GUI: UIMachineViewNormal::adjustGuestScreenSize: Adjust guest-screen size if necessary.
00:01:18.508925 GUI: UISession::sltAdditionsChange: GA state change event came, notifying listeners.
00:01:18.508927 GUI: UIMachineLogicNormal::sltCheckForRequestedVisualStateType: Requested-state=0, Machine-state=5
00:01:24.655359 OpenGL Warning: No Global Shared State!
00:01:24.655378 OpenGL Warning: no global shared
00:01:24.655416 OpenGL Warning: No Global Shared State!
00:01:24.655424 OpenGL Warning: no global shared
00:01:24.655440 OpenGL Warning: No Global Shared State!
00:01:24.655446 OpenGL Warning: no global shared
00:01:24.655485 OpenGL Warning: No Global Shared State!
00:01:24.655491 OpenGL Warning: no global shared
00:01:24.655504 OpenGL Warning: No Global Shared State!
00:01:24.655509 OpenGL Warning: no global shared
00:01:24.655559 OpenGL Warning: No Global Shared State!
00:01:24.655583 OpenGL Warning: no global shared
00:01:24.655594 OpenGL Warning: No Global Shared State!
00:01:24.655600 OpenGL Warning: no global shared
00:01:24.655607 OpenGL Warning: No Global Shared State!
00:01:24.655611 OpenGL Warning: no global shared
00:01:24.655617 OpenGL Warning: No Global Shared State!
00:01:24.655620 OpenGL Warning: no global shared
00:01:24.655634 OpenGL Warning: No Global Shared State!
00:01:24.655640 OpenGL Warning: no global shared
00:01:24.810880 OpenGL Info: crCmd DISABLED
00:01:24.821741 OpenGL Info: Render SPU: GL_VENDOR: NVIDIA Corporation
00:01:24.821759 OpenGL Info: Render SPU: GL_RENDERER: Quadro P4000/PCIe/SSE2
00:01:24.821762 OpenGL Info: Render SPU: GL_VERSION: 4.6.0 NVIDIA 410.66
00:01:24.821765 OpenGL Info: Render SPU: GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_cl_event GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted 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_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility 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GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_locations 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_ballot 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_shading_language_100 GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing 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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_post_depth_coverage GL_EXT_provoking_vertex GL_EXT_raster_multisample GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_sparse_texture2 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 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00:01:24.864231 Display::handleDisplayResize: uScreenId=0 pvVRAM=00007feb28000000 w=1024 h=768 bpp=32 cbLine=0x1000 flags=0x0
00:01:24.864274 GUI: UIFrameBufferPrivate::NotifyChange: Screen=0, Origin=0x0, Size=1024x768, Sending to async-handler
00:01:24.864317 GUI: UIMachineView::sltHandleNotifyChange: Screen=0, Size=1024x768
00:01:24.864330 GUI: UIFrameBufferPrivate::handleNotifyChange: Size=1024x768
00:01:24.864340 GUI: UIFrameBufferPrivate::performResize: Size=1024x768, Directly using source bitmap content
00:01:25.210489 ALSA: Using output device "default"