Xpra: Ticket #577: detect lack of transparency support and disable it to save bandwidth

In my testing, virtualbox virtual machines would only display transparent windows with alpha if the accelerated 3D drivers are installed. I was hoping that checking for compositing would help (see r6575), sadly it does not. (we already check rgba visuals, etc..) Hopefully there is away to detect the lack of transparency, one I am not aware of.

Sat, 21 Sep 2019 12:15:13 GMT - Antoine Martin: status changed; resolution set

niche setup, not worth the extra effort.

Sat, 23 Jan 2021 04:59:52 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/577