copy/paste not working

[rikona]

On Mon, 22 Jul 2019 20:48:34 +0200
Ralf Mardorf via ubuntu-users <ubuntu-users at lists.ubuntu.com> wrote:

> On Mon, 22 Jul 2019 11:15:39 -0700, rikona wrote:
> >Re the fixes - it looks like trying to use older KDE pgms, some of
> >which are no longer part of current KDE distros, may be at "end of
> >life" :-) and I will have to use less desirable [to me] current pgms
> >instead. Sometimes progress seems to go backward...  
> 
> Yesno, that's a little bit, too generalized.
> 
> You could use qt3, qt4 and qt5 by one install, loosely speaking you
> "just" need to ensure that all qt3 apps are compiled against the same
> version of qt3, all qt4 apps are compiled against the same version of
> qt4 and all qt5 apps are compiled against the same version of qt5.
> 
> I suspect you have got a wild mixture of qt apps from different
> sources. As already pointed out. For 16.04 falkon is not an old app,
> it's newer than qupzilla from official Ubuntu repositories.
> 
> From where did you get the Qt apps that are not provided by official
> Ubuntu 16.04 repos?

I don't remember - that was in 2016. :-) If it was in the "software"
GUI repos, I used that to install. I presume if it is there it should
work - is that true? A few, like brave browser, need a separate install,
but those were quite a while ago too. BUT - this ran quite well for a
long time [a few glitches, but ok]. It was the *recent updates* that
broke the pgms quite badly. Would these updates cause the dependency
problems you mentioned? When I do an update are ALL my installed KDE
pgms also updated in a consistent way? If not, maybe that's how this
happened.

I've decided to abandon the broken pgms - falkon is gone and I'm trying
other browsers to replace it [I usually run 4 different browsers at a
time]. 

I note that kate IS currently listed in the SW GUI. Does that mean that
it is likely to work in my current 16.04? I also note that even though
it *IS* installed it is NOT listed there as being installed. Could the
old installed version be different enough that it is not even being
recognized as already installed? If so would a remove & reinstall of
kate perhaps fix it? If so, how can I remove the installed kate - an
"uninstall" option is not shown? Would I actually need to remove
**ALL** KDE stuff before reinstalling a few KDE pgms?