Restore kubuntu login manager

[Jeffrey Walton]

On Sat, Dec 3, 2022 at 2:19 AM Sarunas Burdulis
<sarunas at math.dartmouth.edu> wrote:
>
> On 12/2/22 00:24, Jeffrey Walton wrote:
> > Hi Everyone,
> >
> > I tried to fix my Clang install on Kubuntu/Jammy after a
> > do-system-upgrade.[1] When I removed some old and unused GCC packages,
> > it blew away some of the GUI stuff, like the greeter and login
> > manager. Looking at bash history, I performed `apt remove --purge
> > gcc-9* gcc-10* gcc-12*`. I did not record what packages were removed,
> > but it cut deeper than expected.
> >
> > I did some fiddling in an attempt to repair the login gear. I've
> > gotten as far as the two screen shots at [2,3]. Obviously, they are
> > wrong. Especially the big Soft Input Panel (SIP) - this is a desktop
> > computer and not a laptop. Looking at bash history, they are the
> > result of (re?)installing kde-plasma-desktop and lightdm-kde-greeter.
> >
> > How do I get this system back to its upgraded state with the expected
> > login manager and behaviors?
>
> I think Kubuntu login manager is SDDM. Packages are sddm and
> kde-config-sddm (applet for System Settings). There are also several
> sddm-theme-... theme packages.
>
> You may have SDDM installed already, but not being used. You can do
> `dpkg-reconfigure -plow sddm` to set what your default login manager is.
>
> > [2] https://imgur.com/a/PzxO06d
> > [3] https://imgur.com/a/LOFSE2u
>
> lightdm-kde-greeter doesn't seem to exist. You probably are looking at
> lightdm-gtk-greeter...

Thanks Sarunas .

It looks like these were the suspects:

   * sddm (reinstall)
   * kde-plasma-desktop (reinstall)
   * kde-style-breeze (install)

And I had to remove this to get rid of the Soft Input Panel/Virtual
Keyboard. I installed it after I broke things:

   * gtk3-engines-breeze

Jeff