All,
I am hoping for some help running VNC on a Windows Azure virtual machine,
Microsoft's hosted VM solution (like Amazon EC2). Any help or insight is
appreciated.
By default, Azure VMs come with RDP pre-configured. However, I am running an
application that uses OpenGL graphics, which runs very poorly over RDP (worse
than screen-scraping). Selecting an object so you can highlight it takes
several seconds, even at LAN speed.
To overcome this, I tried to install both RealVNC (which I have used in the
past for other purposes), and TigerVNC (which is new to me, but chose for 3D
support). Both applications basically have the same problem:
1) When I attempt to connect to the VNC server, it successfully connects
and challenges me for a password, so there is no immediate connectivity or
firewall issue.
2) When I enter the password, the RDP session, if one is being used,
disconnects. I'm confused as to why RDP would even know VNC is being used -
they are totally separate applications, running on different ports (5900 for
VNC, and 3389 for RDP).
3) Neither RealVNC or TigerVNC give a remote desktop after logging in.
RealVNC reports that the connection has been unexpectedly disconnected, while
TigerVNC provides no message.
A few details:
- Only port 5900 and 3389 is open to the Azure instance. Do I need
other ports?
- I am running VNC as an application, not a service.
- I am attempting to connect to the same machine using both RDP and
VNC.
- I don't know where to find any kind of logging of VNC to help me
figure out why the session is disconnecting.
One theory I have may be screen resolution. I don't know what the "Native"
resolution of Azure VMs are, or if they have one. The resolution has always
been determined by the RDP client, and the VM just adjusts to match. VNC
typically displays at the already-existing resolution.
-->Adam
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