Bug 1731480 Comment 13 Edit History

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Original comment by
on 
Oh, yes. 

llvmpipe:
With Nvidia driver installed:
`$ LIBGL_ALWAYS_SOFTWARE=1 ./test`
> eglQueryDisplayAttribEXT supported
> eglGetError(): 0x3000 // EGL_SUCCESS
> eglGetError(): 0x3008 // EGL_BAD_DISPLAY

= same as without  LIBGL_ALWAYS_SOFTWARE=1

`$ sudo apt purge *nvidia*`

`$ LIBGL_ALWAYS_SOFTWARE=1 ./test`
> eglQueryDisplayAttribEXT supported
> eglGetError(): 0x3000 // EGL_SUCCESS
> eglGetError(): [0x300c // EGL_BAD_PARAMETER](https://searchfox.org/mozilla-central/rev/5966e98bdfa7355e0a3d9cce482f4717dc3419b0/gfx/angle/checkout/include/EGL/egl.h#58) <-------------
Revision 1 by
on 
Oh, yes. 

llvmpipe:
With Nvidia driver installed:
`$ LIBGL_ALWAYS_SOFTWARE=1 ./test`
> eglQueryDisplayAttribEXT supported
> eglGetError(): 0x3000 // eglQueryDisplayAttribEXT returned EGL_SUCCESS
> eglGetError(): 0x3008 // eglQueryDeviceStringEXT returned EGL_BAD_DISPLAY

= same as without  LIBGL_ALWAYS_SOFTWARE=1

`$ sudo apt purge *nvidia*`

`$ LIBGL_ALWAYS_SOFTWARE=1 ./test`
> eglQueryDisplayAttribEXT supported
> eglGetError(): 0x3000 // eglQueryDisplayAttribEXT returned EGL_SUCCESS
> eglGetError(): [0x300c // eglQueryDeviceStringEXT returned EGL_BAD_PARAMETER](https://searchfox.org/mozilla-central/rev/5966e98bdfa7355e0a3d9cce482f4717dc3419b0/gfx/angle/checkout/include/EGL/egl.h#58) <-------------

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