failed upgrade from 12.04 to 14.04

[Doug Stewart]

On Fri, Aug 22, 2014 at 12:08 PM, Stephen M. Webb <
stephen.webb at canonical.com> wrote:

> On 08/22/2014 11:36 AM, Doug Stewart wrote:
> >
> > I believe I am using lightdm. I say this because in /var/log/lightdm
> there is a log file with the correct date on it.
> >
> > Looking in /var/log/lightd/lightdm.log  and compering it to my 12.04
> file I see almost the same thing. I don't see any where
> > that there was an error.   It reported that I did try to start a Ubuntu
> session.
> >
> > What next??
>
> Well, LightDM is going to try to execute a session through some wrappers
> scripts that dump their diagnostics into
> ~/.xsession-errors which is another place to look for problems.
>
> During session startup all of the scripts in /etc/X11/Xsession.d get
> sourced.  If there is a bad script there it would
> wreak havoc with any X11-based session.  Because they're in /etc they're
> config files which do not get replaced or
> removed during an upgrade, so I would weight those scripts heavily in
> searching for problems.
>
> One of the last things that gets done during startup for many DEs is to
> run "upstart" to handle the various services.
> So, the next step I would suggest is to get to a console and remove all
> the log files in ~/.cache/upstart and try
> logging in again, then check to make sure there are log files again.  If
> not, the break is before upstart gets started.
>
> Also, if upstart is running, a 'ps fax' command will show 'init --user'
> will be a child process of lightdm, like below.
>
>  1293 ?        SLsl   0:00 lightdm
>  1365 tty7     Rs+   85:19  \_ /usr/bin/X -core :0 -seat seat0 -auth
> /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
>  2139 ?        Sl     0:00  \_ lightdm --session-child 12 19
>  2534 ?        Ss     0:17      \_ init --user
>  2719 ?        Ss     0:00          \_ ssh-agent -s
>  2729 ?        Ss     0:36          \_ dbus-daemon --fork --session
> --address=unix:abstract=/tmp/dbus-vu8i6frZ7E
>  ...                  ...           \_ ...
>
>
I have init-user as a child of lightdm same as above.



> Note this shows the lightdm process, which runs as root and displays the
> login screen and authenticates the user, spawns
> a privileged X server process (which required root privs to get at the
> hardware) and an unprivileged "session child"
> process that runs a user-level upstart (init) to control the user
> session.  Just so you know.
>
> If you do not see that for the Ubuntu (Unity), Gnome, or LXDE desktops
> it's likely the problem is in the Xsession.d
> scripts (also other DEs, I only know those three for certain).
>
> So, in summary:
>
> (1) check ~/.xsession-errors for signs of badness
>

~/.xsession-errors   says there is an error.
I would like to write the file to a memory stick and then bring it to this
comp. so that I can show the error in the email -- But!! how do I find the
memory stick, from the command prompt????????

If I can find where the memory stick is then I can copy the file to it etc.
Doug S.


> (2) clean out ~/.cache/upstart, log in, and check that directory for
> nefarious symptoms
> (3) check what processes are running when the session fails to start
>
> The results will determine the next steps to take.
>
> --
> Stephen M. Webb  <stephen at ubuntu.com>
> https://launchpad.net/~bregma
>
> --
> ubuntu-ca mailing list
> ubuntu-ca at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-ca
>



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