rare problem

Colin Law clanlaw at gmail.com
Mon Mar 14 08:12:16 UTC 2016

On 14 March 2016 at 06:06, Anthony Locke <anthonyjameslocke at gmail.com> wrote:
> I'm currently using ubuntu 16.04. I can boot to the GUI intermittently. On
> reboot, I'm experiencing long pauses during start-up intermittently,
> unpredictably, and that i haven't been able to turn off Plymouth to see
> what's causing the pauses. These pauses freeze up the whole PC and I have to
> do a cold shutdown hoping to go to the GUI. When the GUI loads, it's hit or
> miss. I've been all over the forums and all over the IRC chat. It seems I'm
> the only person with this problem.

As Karl has pointed out 16.04 is pre-release and so one must expect
problems.  If you wish to help the development of Ubuntu by tracking
down what is causing the problems so you can submit some bugs then see
below.  Otherwise uninstall 16.04 and install 15.10 or 14.04 until
16.04 is released.

Have you got auto logon enabled?  If so then disable it so that it
boots initially to the logon screen.  That will tell you whether it is
the boot that is hanging or the logon.

Assuming that it is the logon that is hanging then to analyse the
problem further then when you see the problem first wait 10 minutes
(note the time it hangs so you can later look up that time in the
log), as suggested by Karl.  Then, when it has either started or you
have rebooted manually and got a working system then have a look in
/var/log/syslog to see what is happening around the time it hung.


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