Window stays blank on Virtaul Maschine

[RachidiL]

I'm currently testing our CefSharp Implementation on a VM but unfortunatly the window stays blank (white) with no content. Does some had the same or similar problem? Is it connected with graphics card or some special graphics driver on the VM? Please help!

[amaitland]

Check the log file for errors see https://github.com/cefsharp/CefSharp/wiki/Trouble-Shooting#log-file

Please provide more detail see https://github.com/cefsharp/CefSharp/wiki/Questions-&-Support#when-asking-a-question-please-include-the-following

[RachidiL]

Here are some log infos:

[0222/080707.222:ERROR:angle_platform_impl.cc(44)] Display.cpp:940 (initialize): ANGLE Display::initialize error 0: Internal Vulkan error (-3): Initialization of an object could not be completed for implementation-specific reasons, in ../../third_party/angle/src/libANGLE/renderer/vulkan/RendererVk.cpp, initialize:1092.

[0222/080707.222:ERROR:gl_surface_egl.cc(808)] EGL Driver message (Critical) eglInitialize: Internal Vulkan error (-3): Initialization of an object could not be completed for implementation-specific reasons, in ../../third_party/angle/src/libANGLE/renderer/vulkan/RendererVk.cpp, initialize:1092.

[0222/080707.222:ERROR:gl_surface_egl.cc(1430)] eglInitialize SwANGLE failed with error EGL_NOT_INITIALIZED

[0222/080707.222:ERROR:gl_initializer_win.cc(141)] GLSurfaceEGL::InitializeOneOff failed.

[0222/080707.222:VERBOSE1:gpu_init.cc(404)] gl::init::InitializeGLNoExtensionsOneOff failed

[0222/080707.222:ERROR:viz_main_impl.cc(188)] Exiting GPU process due to errors during initialization

[amaitland]

Please answer as many questions as you can from the second link.

Also make sure

• You have an app.manifest see https://github.com/cefsharp/CefSharp/blob/cefsharp/99/NuGet/Readme.txt#L13
• You have distributed included all the required files see https://github.com/cefsharp/CefSharp/wiki/Output-files-description-table-%28Redistribution%29 make sure to include all optional.

[RachidiL]

problem solved with: settings.SetOffScreenRenderingBestPerformanceArgs();

[amaitland]

problem solved with: settings.SetOffScreenRenderingBestPerformanceArgs()

This will disable GPU acceleration. It's rare that this is required anymore. Test with the minimum example. If thatworks in your vm then you are missing something, manifest, files etc.

https://github.com/cefsharp/CefSharp.MinimalExample