Ubuntu 15.04 problems

[Bob]

** Reply to message from Colin Law <clanlaw at gmail.com> on Wed, 27 May 2015
08:59:08 +0100

> On 27 May 2015 at 04:14, Bob <ubuntu-qygzanxc at listemail.net> wrote:
> > ...
> > I have run "systemd-analyze plot > plot.svg" on two partitions which are on my
> > laptop.  The image viewer can display the plot on the partition that seems to
> > boot normally but it cannot display the plot on the partition that is slow
> > booting.  The image viewer has a popup that requests to report the problem.
> > The good news is that Firefox can display both plots.
> >
> > I have looked at the plots but have a problem understanding what it shows.  If
> > anyone could look at the output it is on drop box.
> >
> > The plot for the partition that boots normally is at
> > https://www.dropbox.com/s/ahg1xauez4bk4ln/plog1.svg?dl=0
> >
> > The plot for the partition that boots slowly is at
> > https://www.dropbox.com/s/bbcizpzom9yy3xb/plot2.svg?dl=0
> 
> I am not an expert in those plots but it seems possible that the slow
> one is hanging when it tries to setup wifi.  Does one boot have wifi
> enabled and not the other?

I thought that both had WIFI on but the partition that boots slowly did not.

I turned on WIFI and reran the trace.  As I look at it is basically the same
with or without having WIFI on or off.  See the plot at

https://www.dropbox.com/s/z70mul1c24b451q/plot3.svg?dl=0

I added the boot parameter "init=/lib/systemd/systemd-bootchart".  It adds a
few more trace entries but nothing where the long wait occurs.  See the plot at

https://www.dropbox.com/s/qz1ivu4pl6lbfit/plot4.svg?dl=0


>  If it is enabled in both is it setup
> differently in the two systems?

The partition that boots normally has /home in another partition and more
applications.  Both were installed from an Ubuntu CD that I used the defaults
except that grub is in the root partition as I already had a boot manager
installed.  Everything worked normally until the 15.04 upgrade.  I don't
remember what version was first installed but I install all upgrades and
updates on both partitions.

-- 
Robert Blair