Mailing List Archive

It's your video driver, not vnc.
I had the same problem with some new fangled 'super smart' intel drivers that we're going to save the planet by turning off the video if there was no screen detected. A bit of a problem is a server rack with 8 or more machines.

Solution:
Remove the 'super-smart' video driver and use the default mickeysoft driver.

Cheers,
John

Sent from my iPhone

> On 25 Nov, 2013, at 6:17 pm, "Alex" <alexis.iw@gmail.com> wrote:
>
> Hello,
>
> I use RealVNC Enterprise 4.6 server on Windows 7 SP1 x64 and I would need
> to run it without display connected to PC.
> At first when I disconnected the screen from graphics card (PCIe card) I
> had no problem, but after a reboot it doesn't work.
> I can connect to the VNC server remotely but the client window is
> completely black. Although I can interact blindly and see a trail cursor
> sometimes.
>
> As I was reading RealVNC requires a screen to keep active graphics card. *Is
> there no chance of working without a display?* Such as installing a
> "virtual screen"?
> It is impossible for me to connect a display now, and otherwise I'll have
> to stop using RealVNC.
>
> Thanks for your help,
>
> Alex
> _______________________________________________
> VNC-List mailing list
> VNC-List@realvnc.com
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list

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Alex,

Please let us know that this solution worked for you.

Chuck Balogh - PMP
630.408.9092

-----Original Message-----
From: vnc-list-bounces@realvnc.com [mailto:vnc-list-bounces@realvnc.com] On
Behalf Of John Serink
Sent: Monday, November 25, 2013 4:25 AM
To: Alex
Cc: vnc-list@realvnc.com
Subject: Re: RealVNC Server without screen

It's your video driver, not vnc.
I had the same problem with some new fangled 'super smart' intel drivers
that we're going to save the planet by turning off the video if there was no
screen detected. A bit of a problem is a server rack with 8 or more
machines.

Solution:
Remove the 'super-smart' video driver and use the default mickeysoft driver.

Cheers,
John

Sent from my iPhone

> On 25 Nov, 2013, at 6:17 pm, "Alex" <alexis.iw@gmail.com> wrote:
>
> Hello,
>
> I use RealVNC Enterprise 4.6 server on Windows 7 SP1 x64 and I would
> need to run it without display connected to PC.
> At first when I disconnected the screen from graphics card (PCIe card)
> I had no problem, but after a reboot it doesn't work.
> I can connect to the VNC server remotely but the client window is
> completely black. Although I can interact blindly and see a trail
> cursor sometimes.
>
> As I was reading RealVNC requires a screen to keep active graphics
> card. *Is there no chance of working without a display?* Such as
> installing a "virtual screen"?
> It is impossible for me to connect a display now, and otherwise I'll
> have to stop using RealVNC.
>
> Thanks for your help,
>
> Alex
> _______________________________________________
> VNC-List mailing list
> VNC-List@realvnc.com
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list

_______________________________________________
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VNC-List@realvnc.com
To remove yourself from the list visit:
http://www.realvnc.com/mailman/listinfo/vnc-list


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Wouldn't it be simpler to just insert a dummy plug in the d-sub socket
of your server. With the appropriate pins strapped the pc would think
it was connected to a real monitor.

On 23 November 2013 05:00, Alex <alexis.iw@gmail.com> wrote:
> Hello,
>
> I use RealVNC Enterprise 4.6 server on Windows 7 SP1 x64 and I would need
> to run it without display connected to PC.
> At first when I disconnected the screen from graphics card (PCIe card) I
> had no problem, but after a reboot it doesn't work.
> I can connect to the VNC server remotely but the client window is
> completely black. Although I can interact blindly and see a trail cursor
> sometimes.
>
> As I was reading RealVNC requires a screen to keep active graphics card. *Is
> there no chance of working without a display?* Such as installing a
> "virtual screen"?
> It is impossible for me to connect a display now, and otherwise I'll have
> to stop using RealVNC.
>
> Thanks for your help,
>
> Alex
> _______________________________________________
> VNC-List mailing list
> VNC-List@realvnc.com
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list

_______________________________________________
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VNC-List@realvnc.com
To remove yourself from the list visit:
http://www.realvnc.com/mailman/listinfo/vnc-list

Hi Alex:

TightNVC is the other way around, it always connects even if the
physical output is blanked by the driver.

Cheers,
john



-----Original Message-----
From: vnc-list-bounces@realvnc.com [mailto:vnc-list-bounces@realvnc.com]
On Behalf Of Phil Seakins
Sent: Wednesday, November 27, 2013 9:10 PM
To: vnc-list@realvnc.com
Subject: Re: RealVNC Server without screen

Wouldn't it be simpler to just insert a dummy plug in the d-sub socket
of your server. With the appropriate pins strapped the pc would think it
was connected to a real monitor.

On 23 November 2013 05:00, Alex <alexis.iw@gmail.com> wrote:
> Hello,
>
> I use RealVNC Enterprise 4.6 server on Windows 7 SP1 x64 and I would
> need to run it without display connected to PC.
> At first when I disconnected the screen from graphics card (PCIe card)

> I had no problem, but after a reboot it doesn't work.
> I can connect to the VNC server remotely but the client window is
> completely black. Although I can interact blindly and see a trail
> cursor sometimes.
>
> As I was reading RealVNC requires a screen to keep active graphics
> card. *Is there no chance of working without a display?* Such as
> installing a "virtual screen"?
> It is impossible for me to connect a display now, and otherwise I'll
> have to stop using RealVNC.
>
> Thanks for your help,
>
> Alex
> _______________________________________________
> VNC-List mailing list
> VNC-List@realvnc.com
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list

_______________________________________________
VNC-List mailing list
VNC-List@realvnc.com
To remove yourself from the list visit:
http://www.realvnc.com/mailman/listinfo/vnc-list

_______________________________________________
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VNC-List@realvnc.com
To remove yourself from the list visit:
http://www.realvnc.com/mailman/listinfo/vnc-list