I was tired and hungary when I did it, and while I remember using a
terminal command, I have not the slightest memeory of how I did it.

Exactly how would I check?

So far this morning I have tried something like
apt-cache showpkg qt4  (& qt4.5, 4.6 and so on ) and get nothing

 apt-cache showpkg qt5.6 gets a hit even though I thought I'd removed it.

I read the Release Notes and originally thought that installing qt5.6 would
be a good idea and then read what seemed to be some caveats  that seemed to
suggest that installing qt5.6 after installing LyX2.2.0 might cause
problems. So I thought I'd better get rid of it.

A quick look at /usr/share/  shows I have both qt4 and qt5 (apparently
qt5.6 since that is the folder label and the name I used in the apt-get
install command

I am not exacty Linux fluent. (I possibly speak pidgin Linux?) Can someone
provide detailed instructions or a pointer to a decent cheatsheet that
would show me how to figure out what version of qt LyX is using please?

Thanks for all the help and support.

On 1 June 2016 at 17:58, Scott Kostyshak <skost...@lyx.org> wrote:

> On Wed, Jun 01, 2016 at 10:51:22PM +0200, Georg Baum wrote:
> > John Kane wrote:
> >
> > > I installedl from what I believe is a prepackaged binary from Liviu
> > > Andronic's  stable PPA
> > > <https://launchpad.net/%7Elyx-devel/+archive/release> which I have
> used
> > > before.
> >
> > Good.
> >
> > > My installed version of qt is qt4.5 which if I am reading the release
> > > notes correctly should be okay.
> >
> > 4.5 is really old, and although LyX should work with it in principle it
> is
> > not well tested. Somehow I cannot believe that the ppa contains packages
> for
> > such an old version, but Liviu will know more.
> John, you are on Ubuntu 16.04 and you have Qt 4.5? How did you do that?
> Why do you think your Qt version is 4.5? Does LyX tell you that or
> apt-cache policy?
> I hope we can figure this out for you,
> Scott

John Kane
Kingston ON Canada

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