[winswitch] trying out xpra/winswitch

Neal Becker ndbecker2 at gmail.com
Sat Jan 5 21:44:49 GMT 2013

I'm baffled.  If I start emacs via xpra (using xdummy), it looks great.  If
I start via winswitch it doesn't.  It looks like it's set to a lower

Both clients and servers are fedora f17 linux.

Within each of these emacs sessions, I ran xdpyinfo and xrandr.  Both
outputs show no difference.  I compared the two Xorg.:7.log, Xorg.:62.log,
and don't offhand see any significant diff (because of the timestamps,
comparing these files I just did visually).

I have no ideas how to debug this.  I'd like to use winswitch for the nice
features, but emacs under xpra looks beautiful while emacs under winswitch
looks bad.

I was wrong about my guess that winswitch was not using xdummy.  I see that
Xorg was started with the same command line in both cases.

Any ideas?

On Sat, Jan 5, 2013 at 6:27 AM, Antoine Martin <antoine at nagafix.co.uk>wrote:

> On 01/04/2013 07:47 PM, Neal Becker wrote:
> > I have some info about 4.  It seems if I use xpra directly, the server
> > started on the remote is using Xdummy driver, as per my xpra.conf.  But
> > when started by winswitch, it is not.  Any ideas?
> What versions have you got installed? What platform, distro, etc?
> Old versions used to try to make xpra use Xdummy explicitly by
> specifying the Xvfb command to use. But this is no longer the case, and
> when winswitch launches xpra it will use the same configuration file as
> when used from the command line?
> > On Thu, Jan 3, 2013 at 8:30 PM, Neal Becker <ndbecker2 at gmail.com> wrote:
> >
> >> 4. emacs started manually on remote using xpra looks much nicer than
> emacs
> >> started via winswitch.  I could send screenshots.
> Quality is encoding related, it is quite possible that winswitch uses a
> different encoding by default. Try holding launching your commands via
> the full "Start Application" dialog, or by holding the "Shift" key as
> you select the application from the start menu, these dialogs allow you
> to select the encoding quality.
> Or just compare once launched in the xpra tray menu.
> >> On Thu, Jan 3, 2013 at 8:20 PM, Neal Becker <ndbecker2 at gmail.com>
> wrote:
> >>
> >>> Trying out latest on Fedora 17.
> >>>
> >>> 1. Which way to configure Xorg?  Right now I'm trying xvfb with the
> dummy
> >>> driver:
> >>> xvfb=/usr/bin/Xorg-nosuid -dpi 96 -noreset -nolisten tcp +extension GLX
> >>> +extension RANDR +extension RENDER -logfile
> >>> ${HOME}/.xpra/Xorg.${DISPLAY}.log -config /etc/xpra/xorg.conf
> /etc/xpra.conf
> Should have examples for both Xvfb and Xdummy. What is enabled depends
> on your distro. If Xdummy is not chosen, chances are that your distro is
> too old to support it adequately.
> >>> This seems to look nice on emacs.  But I wonder if this is the "best"
> >>> option?  One thing is, it seems RANDR extension is reported as missing.
> >>>  For example, running xrandr --verbose from within emacs reports that.
> As per:
> http://xpra.org/Xdummy.html
> Xdummy is the way forward and there are a number of unfixable bugs when
> using Xvfb without randr.
> >>> 2. winswitch works, but if I try to start a remote desktop session it
> >>> works with xpra, but not NX.  I believe it said something about ssh
> server
> >>> not forwarding?
> Details please. Platform, versions, etc. Log files?
> >>> 3. In winswitch, if I try to start a different size desktop session, it
> >>> does not change size.  Probably related to RANDR missing?
> What protocol are you using for your desktop session? NX? VNC? Xpra?
> Cheers
> Antoine
> >>>
> >>
> >>
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