On 11/15/15, Antoine Martin <[email protected]> wrote: > 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.
$ Xvfb :10 -screen 0 4096x2160x24+32 -fbdir /var/tmp & $ export DISPLAY=:10.1 $ libreoffice & / i3 & / lxsession -s LUBUNTU -e LXDE $ xpra shadow :10 >> 2. Access that instance from another machine (laptop) using 'xpra >> attach ssh:hostname:10' $ xpra attach ssh:HOSTNAME:10 >> 3. Screencapture the :10 inside the same machine at 4K. > Using which tool? initially with ffmpeg and then with xwd / maim >> 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. With Xdummy, once I attach to the remote machine with xpra, the ffmpeg fails as it says "the capturing region lies out of the range." or something like this. >> 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? Tried with Xvfb, didn't work and then with Xdummy. Still experimenting. ;-) $ lsb_release -a LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty xpra is at v0.15.8-2 and xvfb is at v1.15.1-0ubuntu2.7 >> 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 Very interesting. Is there a binary of this dev release? Thanks for taking time to reply. Cheers, /z > > Cheers > Antoine > >> >> Cheers, >> /z >> _______________________________________________ >> shifter-users mailing list >> [email protected] >> http://lists.devloop.org.uk/mailman/listinfo/shifter-users > > _______________________________________________ > shifter-users mailing list > [email protected] > http://lists.devloop.org.uk/mailman/listinfo/shifter-users > _______________________________________________ shifter-users mailing list [email protected] http://lists.devloop.org.uk/mailman/listinfo/shifter-users
