Xpra: Ticket #2682: proxy server on low display number causes failures

It doesn't start a vfb and so when we next try to start a session with --displayfd, it may allocate the same display number and xpra start[-desktop] will fail because the socket exists.

Sun, 04 Oct 2020 14:41:44 GMT - Antoine Martin: priority, status changed

priority changed from major to critical
status changed from new to assigned

Fri, 16 Oct 2020 15:58:15 GMT - Antoine Martin: status changed; resolution set

status changed from assigned to closed
resolution set to fixed

A warning should be enough: r27670

Sat, 23 Jan 2021 05:57:58 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2682