On 15/11/15 14:44, Zenny wrote:
Hi,
xpra is very interesting, but I am encountering an issue or say cannot
figure out exactly how to achieve the following.
1. Start a xvfb based virtual x instance in a resolution say 4k
(3840x2160) in one machine (server) with say libreoffice impress, and
broadcast using 'xpra shadow :10"
Please include the exact command line used for starting the Xvfb and
libreoffice.
2. Access that instance from another machine (laptop) using 'xpra
attach ssh:hostname:10'
3. Screencapture the :10 inside the same machine at 4K.
Using which tool?
But it does not allow me to capture in 4K but at the same resolution
as of the rendering laptop.
I have tested here with Xdummy and that worked fine.
I checked Xdummy related to Ubuntu instruction at
https://www.xpra.org/trac/wiki/Xdummy, but to no avail.
Are you using Xvfb or Xdummy? What distribution and version?
Any hints would be highly appreciated. Thanks!
You may also be interested in the following 0.16 features:
* ability to NOT change the virtual display to match the client's
resolution using:
XPRA_RANDR=0 xpra start ...
See:
http://xpra.org/trac/changeset/11229
Shadow mode is A LOT less efficient than the regular "start" mode.
* desktop scaling, which allows you to upscale or downscale the server
resolution when displayed on the client:
http://xpra.org/trac/ticket/976
So you could render at 4k and display at 2k for example (though the main
purpose of this ticket is to do the opposite to save bandwidth).
* "sync-xvfb" fix for screen capture tools:
http://xpra.org/trac/ticket/988
Cheers
Antoine
Cheers,
/z
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