Black screen but other functions ok

[James Weatherall]

Mattias,

MTU is "Maximum Transmission Unit" & determines the maximum network packet
size that the TCP/IP stack will use when sending data.  It's supposed to be
determined automatically but in some situations, particularly when using
VPNs, that seems not to work.

Setting the screen to a smaller size won't normally help with MTU issues -
you really need to get your network fixed, if that is indeed the problem.

Cheers,

Wez @ RealVNC Ltd.


> -----Original Message-----
> From: Mattias Bjvrck [mailto:mattias.bjorck "at" nimax.se] 
> Sent: 02 November 2006 15:36
> To: James Weatherall
> Subject: SV: Black screen but other functions ok
> 
> Hello Wez,
> Thank you for your answer.
> I do not know what MTU means, could you explain it a bit please?
> I am guessing that you are trying to tell me that a lower 
> screen resolution
> would fix this, correct?
> 
> Best Regards
> Mattias Bjvrck
> Nimax AB
> 
> Tel:   +46-19-675 44 67
> Mobil: +46-70-779 22 01
> Fax:   +46-19-675 44 68
> www.nimax.se
> 
> -----Ursprungligt meddelande-----
> Fren: vnc-list-admin "at" realvnc.com 
> [mailto:vnc-list-admin "at" realvnc.com]Fvr
> James Weatherall
> Skickat: den 2 november 2006 13:16
> Till: 'Mattias Bjvrck'; vnc-list "at" realvnc.com
> Dmne: RE: Black screen but other functions ok
> 
> 
> Mattias,
> 
> This behaviour is normally caused by the server computer 
> being configured
> with too large an MTU for the network, which is sometimes the 
> case when
> running over a VPN.  Mouse & keyboard events get to the 
> server OK because
> they are small amounts of data, and so much much smaller than the MTU.
> 
> Cheers,
> 
> Wez @ RealVNC Ltd.
> 
> 
> > -----Original Message-----
> > From: vnc-list-admin "at" realvnc.com
> > [mailto:vnc-list-admin "at" realvnc.com] On Behalf Of Mattias Bjvrck
> > Sent: 02 November 2006 10:49
> > To: vnc-list "at" realvnc.com
> > Subject: Black screen but other functions ok
> >
> > Hi,
> > I am trying to use the VNC 4.1.2 but all i get is a black screen.
> > The mouse and keyboard-functions are active, the staff at the
> > other site can
> > see me moving the mouse and typing.
> > But the screen information do not reach my screen somehow.
> > Anyone with any ideas?
> >
> > Best Regards
> > Mattias Bjvrck
> > Nimax AB
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