Nick,

FYI I see that Ricardo has mentioned in this thread:

http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Upgrade-from-0-9-14-to-1-1-0-RDP-now-doesn-t-connect-td8207.html

that the (later) freerdp2 in Ubuntu 20.04 appears to resolved the issue - even though data suggests it to be a M$-specific problem.

I haven't confirmed this myself; although I just recently completed an Ubuntu 20.04 install I've no local W10 system to trial this on, but it sounds promising.


On 18/02/2020 12:32 a.m., Nick Couchman wrote:
On Mon, Feb 17, 2020 at 12:00 AM ivanmarcus <[email protected]> wrote:

    Brett (and Andrew),

    It does seem there's some RD issues with Win10 1903 vs 1809,
    although they're meant to be addressed by now.

    If you've still got the 18.04 VM running with Guacamole 1.1.0 you
    could try disabling "use WDDM graphics display driver for remote
    desktop connection" in the Win10 machine?

    This should be available via Group Policy Editor:

    -Local Computer Policy
    -Computer Configuration
    -Administrative Templates
    -Windows Components
    -Remote Desktop Services
    -Remote Session Environment

    It could be a complete red herring, but if it were me I'd spend a
    couple of minutes trying it out.

    As I expect you know Guacamole 1.0.0 uses FreeRDP 1.x whereas
    1.1.0 utilises the new FreeRDP 2. I believe this is still in beta;
    maybe there's some issues still to be resolved and although I
    didn't see any from a cursory inspection it might be worth a more
    in-depth check?



Wow, nice find! I wonder if there's a flag you can/should set on the RDP connection side to disable this, or if there's something else that needs to be implemented in Guacamole's RDP library to either take advantage of it or tune it down.

-Nick

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