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https://issues.apache.org/jira/browse/GUACAMOLE-288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17098189#comment-17098189
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Nick Couchman commented on GUACAMOLE-288:
-----------------------------------------

The challenge, here, is in the steps to negotiating multi-monitor support 
between the client (web browser) and the remote server.  Thinking through this 
at a high level, we need to:
* Be able to detect multiple available monitors via the web browser (this 
_might_ be possible with the Presentation API, but I'm not certain about that 
and how much of it is exposed down to the JS layers).
* Report multiple monitors to the guacd side (this shouldn't be too hard, but 
means adding this piece of the handshake to the protocol).
* Have guacd negotiate multi-monitor support with the remote side (probably 
doable, at least in the case of RDP)
* Launch multiple browser windows on the available monitors (again, _might_ be 
possible with Presentation API, but at the very least non-trivial)
* Ensure that the ordering and orientation of monitors is consistent (probably 
doable, but not trivial).
* Make sure we don't break things for folks wanting single-monitor support in 
the meantime - which probably means allowing users to specify (maybe through 
Preferences) which monitors they want to use...again, doable, but not trivial.
* Figure out what to do with protocols where multi-monitor support is not quite 
as native as RDP - so, for instance, on SSH, do we always stick to a single 
monitor, do we try to open multiple terminals on multiple monitors, or...?

> Add support for multi-monitor connections
> -----------------------------------------
>
>                 Key: GUACAMOLE-288
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-288
>             Project: Guacamole
>          Issue Type: New Feature
>          Components: guacamole-client, guacamole-server
>            Reporter: Slava
>            Priority: Minor
>
> Hello,
> I'm wondering if multi monitor support for RDP (and maybe even VNC?) is on 
> Guacamole's roadmap?  Currently, when we RDP to a workstation with multiple 
> displays, we only see the primary display.  Can't find any options in the 
> connection settings to configure multiple monitors.
> I've found a ticket on the old Jira where a developer suggested it may be a 
> trivial fix that involves adding a few flags and then the ticket went quite 
> in 2015...so just wondering if this feature is in fact being added and if 
> there is any ETA for it?
> Thank you



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