Add logs around screen size related infos. Added log around IDXGIOutput and ScreenHelperWin::RefreshScreens(). These APIs did not provide Active signal resolution:( But PCs that caused the problem always return 0 at [IDXGIOutput6::CheckHardwareCompositionSupport()](https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_6/nf-dxgi1_6-idxgioutput6-checkhardwarecompositionsupport). When the flags were not 0, I did not see the problem.
Bug 1620491 Comment 2 Edit History
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Add logs around screen size related infos. Added log around IDXGIOutput and ScreenHelperWin::RefreshScreens(). These APIs did not provide Active signal resolution:( But PCs that caused the problem always return 0 at [IDXGIOutput6::CheckHardwareCompositionSupport()](https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_6/nf-dxgi1_6-idxgioutput6-checkhardwarecompositionsupport). When the flags were not 0, I did not see the problem. The following command was used for testing. > ./firefox.exe --wait-for-browser > log.txt 2>&1