Kubuntu 16.10 is out!

[Valorie Zimmerman]

Removing the -devel list since this is a support question.

On Tue, Oct 18, 2016 at 3:12 PM, Stephen Morris
<samorris at netspace.net.au> wrote:
> On 14/10/16 15:29, Valorie Zimmerman wrote:
>>
>> Hi folks, I'm sure most of you have heard by now, but just in case:
>> Kubuntu 16.10 has been released, along with all flavors of Ubuntu.
>>
>> The official announcement:
>>
>> http://archive.ubuntu.com/ubuntu/dists/yakkety-updates/main/dist-upgrader-all/current/ReleaseAnnouncement.html
>>
>> We've got an announcement on the website as well:
>> https://kubuntu.org/news/kubuntu-16-10-released/
>>
>> Our step-by-step about installing and upgrading lacks some
>> screenshots. Please feel free to help out there if you can:
>> https://help.ubuntu.com/community/YakketyUpgrades/Kubuntu
>>
>> If you want to seed the torrents, the easiest way is to start here:
>> http://torrent.ubuntu.com:6969/
>>
>> Remember as always to report your bugs. The easiest way is in the
>> commandline: `ubuntu-bug packagename`
>>
>> All the best,
>>
>> Valorie
>>
> Hi,
>     I have Kubuntu 16.04 LTS installed (that was installed from scratch on a
> new system) and tried to upgrade using the instructions in your third link
> above. The problem I have is that neither Muon nor Plasma-Discovery have the
> options specified in the screen shots to invoke the configuration settings.
> The only way I could find on my system to change the update settings back to
> "normal" was to use the update setting options in Synaptic and to set those
> to "Any version". Having done this Plasma-Discovery then prompted to do an
> upgrade, but when I clicked on the upgrade button it did nothing. The only
> way I could find to actually upgrade was to issue a 'sudo
> do-release-upgrade' from a shell, which then proceeded to undertake the
> upgrade (before switching to "Any Version" in Synaptic this command returned
> the message that there were No Releases Available).

That should work, yes.

>     Having done the upgrade the system quite happily booted to the Lightdm
> display manager, but was then not able to start Unity, Plasma or Gnome.
> Gnome and Unity both produced a garbled graphic display and immediately
> dropped back to Lightdm. Plasma produced 'Internal System Error' messages
> and when I clicked on 'Details' it said that it was /user/bin/Kwin_X11 that
> was failing, and, if I click on 'Ignore all future messages of this type',
> used ctrl+alt+delete to drop back to Lightdm, and restarted Plasma it
> produced the same failure message, but this time is was in /usr/bin/compiz.
> I'm probably not surprised that Compiz had issues as I thought it required
> an accelerated video driver, and, from the display I was getting it looked
> like the Nvidia proprietary driver I had installed in 16.04 had been removed
> by the upgrade and it could not be reinstalled as it appeared that the
> repositories did not have the necessary component to allow a reinstall.
>     How do I now downgrade to 16.04, or do I need to wipe the root, boot and
> home partitions and re-install 16.04 from scratch, or can I download a 16.10
> ISO that I can burn to DVD and do a fresh/clean install from that?
>
> regards,
> Steve

Hi Steve,

First, downgrade isn't supported.

We haven't used Lightdm for a long time, perhaps two years? We've used
SDDM since then, and that should support booting into both Unity and
GNOME desktops, as well as the Plasma session.

So my advice is: first try removing lightdm and installing sddm, if it
is not installed. From the commandline, you can always check to see
what you have installed with the command apt-cache. Like: `apt-cache
policy lightdm` or `apt-cache policy sddm`. Notice that sudo is not
used with this command, since it only looks up what you have
installed.

Then I would do `sudo apt remove lightdm && sudo apt install sddm`. If
you find that sddm is already installed, instead do: `sudo apt remove
lightdm && sudo dpkg-reconfigure sddm`

The reason you want to chain those commands together with "&&" is so
that they work sequentially, and you aren't left with no manager at
all.

When you run into problems, the most useful command is `sudo apt
install -f`. The -f flag stands for fix, and that's what apt will
attempt to do. If you have misconfiguration problems, `sudo
dpkg-reconfigure -a` will try to reconfigure all, and then you can
again try install -f.

It is certainly possible to download the 16.10 ISO and reinstall, but
you will lose your unity and gnome sessions.
https://kubuntu.org/alternative-downloads/

As for the nvidia driver: others will have to answer.

Valorie