From owner-freebsd-questions@freebsd.org  Tue Feb 21 17:04:34 2017
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To: freebsd-questions@freebsd.org
From: Andrea Venturoli <ml@netfence.it>
Subject: VirtualBox over X11
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Date: Tue, 21 Feb 2017 18:04:06 +0100
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Hello.

I'm not sure I should write here or to x11@ or to emulation@...


I've been using VirtualBox over X11/ssh for years, but I tried again 
today and it does not work anymore.

Running "service vboxheadless onestart" still works, but running 
"VirtualBox" from a terminal does absolutely nothing, it just stays 
there and no window is displayed.

"truss -p pid" shows something like:

> recvmsg(0x7,0x7fffffff8ba0,0x0)                  = 32 (0x20)
> _umtx_op(0x800673008,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x0,0x0) = 0 (0x0)
> _umtx_op(0x801c06658,UMTX_OP_NWAKE_PRIVATE,0x1,0x0,0x0) = 0 (0x0)
> write(11,"\^A",1)                                = 1 (0x1)
> poll({ 7/POLLIN },1,-1)                          = 1 (0x1)
> recvmsg(0x7,0x7fffffff8ba0,0x0)                  = 32 (0x20)
> _umtx_op(0x800673008,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x0,0x0) = 0 (0x0)
> _umtx_op(0x801c06658,UMTX_OP_NWAKE_PRIVATE,0x1,0x0,0x0) = 0 (0x0)
> write(11,"\^A",1)                                = 1 (0x1)
> poll({ 7/POLLIN },1,-1)                          = 1 (0x1)
> recvmsg(0x7,0x7fffffff8ba0,0x0)                  = 32 (0x20)
> _umtx_op(0x800673008,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x0,0x0) = 0 (0x0)
> _umtx_op(0x801c06658,UMTX_OP_NWAKE_PRIVATE,0x1,0x0,0x0) = 0 (0x0)
> write(11,"\^A",1)                                = 1 (0x1)
> poll({ 7/POLLIN },1,-1)                          = 1 (0x1)
> recvmsg(0x7,0x7fffffff8ba0,0x0)                  = 32 (0x20)
> _umtx_op(0x800673008,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x0,0x0) = 0 (0x0)
> _umtx_op(0x801c06658,UMTX_OP_NWAKE_PRIVATE,0x1,0x0,0x0) = 0 (0x0)
> write(11,"\^A",1)                                = 1 (0x1)
> poll({ 7/POLLIN },1,-1)                          = 1 (0x1)
> recvmsg(0x7,0x7fffffff8ba0,0x0)                  = 32 (0x20)
> _umtx_op(0x800673008,UMTX_OP_WAIT_UINT_PRIVATE,0x0,0x0,0x0) = 0 (0x0)
> _umtx_op(0x801c06658,UMTX_OP_NWAKE_PRIVATE,0x1,0x0,0x0) = 0 (0x0)
 > ...

This really does not help me at all.



Any idea?

N.B. I've recently followed the Qt update on the "remote" box (where 
VBox should run) and the X11 update on the "local" box. Could this matter?

  bye & Thanks
	av.