Re: [gnome-flashback] Ubuntu install dependency issues

[Erick Brunzell <lbsolost yahoo com>]

I suspect that an update was interrupted at some point. I posted a new 
query here:

http://ubuntuforums.org/showthread.php?t=2303257&p=13393193#post13393193

The output of that command would provide the package version info of all 
the trusty flashback packages, and I included a sample output from my 
own machine to show what the current stable package versions should be.


On 11/19/2015 08:04 AM, Dmitry Shachnev wrote:
> Hi,
>
> 2015-11-19 4:15 GMT+03:00 Jim Ewert <jim ewert gmail com>:
> > #  apt-get remove gnome-session gnome-session-flashback
> > gnome-settings-daemon
> > Reading package lists... Done
> > Building dependency tree
> > Reading state information... Done
> > Package 'gnome-session' is not installed, so not removed
> > Package 'gnome-settings-daemon' is not installed, so not removed
> > Package 'gnome-session-flashback' is not installed, so not removed
> > 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
> > # apt-cache policy gnome-session
> > gnome-session:
> >    Installed: (none)
> >    Candidate: 3.9.90-0ubuntu12
> >    Version table:
> >       3.9.90-0ubuntu12 0
> >          500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
> This indicates that your apt cache is not up to date. Please make sure
> you have the -updates component enabled in your /etc/apt/sources.list
> (you can also check it via software-properties-gtk GUI tool).

At some point it may be beneficial for us to see the output of these two 
commands to determine the state of the effected machines software sources:

cat /etc/apt/sources.list

ls /etc/apt/sources.list.d

I really wish I could have convinced Jim to run (and post the output of):

sudo dpkg --configure -a

In my experience if an update has been interrupted you'll see an output 
saying something like "dpkg:  error: parsing file .............", then 
it's a matter of correcting the problem in /var/lib/dpkg/updates.

At some point we have to find the root of the held broken package error.

Lance

> > # apt-get install gnome-session-flashback
> > Reading package lists... Done
> > Building dependency tree
> > Reading state information... Done
> > Some packages could not be installed. This may mean that you have
> > requested an impossible situation or if you are using the unstable
> > distribution that some required packages have not yet been created
> > or been moved out of Incoming.
> > The following information may help to resolve the situation:
> >
> > The following packages have unmet dependencies:
> >   gnome-session-flashback : Depends: metacity (>= 2.30) but it is not going
> > to be installed
> > E: Unable to correct problems, you have held broken packages.
> And what happens when you try to apt-get install metacity?
>
> --
> Dmitry Shachnev
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