On 04/02/2015 23:20, David Stacey wrote:
I'm having difficulty running any Qt5 application. These are the
commands I'm issuing:

     XWin -multiwindow &
     export DISPLAY=:0.0
     xclock &

and I see the clock, so X is up and running. Then:

     QXcbConnection: XCB error: 145 (Unknown), sequence: 162, resource
id: 0, major c
     ode: 140 (Unknown), minor code: 20
     Bad system call (core dumped)

Possibly you need to install and start cygserver (See [1])

If so, this is because Qt5 is assuming shared memory is available, which could possibly be handled in a better way...

[1]  http://x.cygwin.com/docs/ug/using-shared-memory.html

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