On 17/11/15 20:25, Zenny wrote:
Thanks again.
The only bottleneck remained is refreshing the display in the client
(not matter which encoding or quality is used). Please note that it
is with Xvfb (not Xdummy). When display change takes place, say a
slide in libreoffice impress, only a quarter of display changes in
client running at (1920x1080), while the screecapture from the virtual
X server running in 4K is okay.
I start xpra server like:
$ XPRA_RANDR=0 xpra start --use-display :10 --sync-xvfb=50
--bind-tcp=localhost:10000
and xpra client like:
$ xpra attach tcp:localhost:10000:10 --desktop-scaling=0.5
--sync-xvfb=50 --opengl=no --encoding=jpeg --quality=85
Appreciate if there is any inputs on automatically refresh the full
screen (not just quarter of the screen) in xpra client.
Just a final message to close this thread - I hope.
We continued to debug this issue in a ticket:
http://xpra.org/trac/ticket/1036
And the requested feature now works as expected, even with OpenGL
disabled, etc.
The important points being:
* a recent 0.16 build is required for the features below (and a few bugs
were found in the process)
* "XPRA_RANDR=0" to keep the server's Xvfb at its starting resolution
(or you have to ensure the desktop-scaling value will give the desired
resolution on the server side)
* "sync-xvfb" enabled to actually paint window updates on the virtual screen
* "desktop-scaling" to make the server's screen size fit on to the client
Cheers
Antoine
Thanks,
/z
On 11/17/15, Antoine Martin <[email protected]> wrote:
On 16/11/15 23:51, Zenny wrote:
On 11/16/15, Antoine Martin <[email protected]> wrote:
If you are certain that you will only need a single resolution, then
you
could also use a customized xorg.conf
The "desktop-scaling" option in 0.16 looks easier to me than either of
those options.
any man pages about desktop-scaling?
Can you please check before asking?
man xpra
And also here (the second link on the wiki):
http://xpra.org/manual.html
Sorry I skipped the part in the man-page. Still I could not figure out
the sync-xvfb part in the man pages.
After reading the --desktop-scaling part, the parameter allows to
control the server's x resolution on the fly.
But I am trying to do the other way round. The server's virtual X
remains at the 4K resolution while the client's varies according to
the physical screen attached.
If you know your client's resolution before you connect, you can
calculate the ratio which will give you 4k on the server.
It just won't handle monitor hotplugging.
Antoine
Thanks again,
/z
Antoine
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