When I reboot I get a fresh login screen for several seconds?? before the reboot starts

[Robert Heller]

At Sun, 25 Aug 2024 15:09:07 +0100 "Ubuntu user technical support,? not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> On Sun, Aug 25, 2024 at 08:22:16AM -0400, Robert Heller wrote:
> > At Sun, 25 Aug 2024 13:44:49 +0200 "Ubuntu user technical support,? not 
> > for general discussions" <ubuntu-users at lists.ubuntu.com> wrote: 
> > 
> > >
> > > Hi!
> > >
> > > Le dim. 25 ao????t 2024 ???? 13:40, Chris Green <cl at isbd.net> a ????crit :
> > >
> > > > On Sun, Aug 25, 2024 at 10:55:25AM +0100, Chris Green wrote:
> > > > > When I reboot my system (running xubuntu 24.04) either from the menus
> > > > > or from the command line ('sudo reboot') the GUI shuts down and I get
> > > > > my standard GUI login prompt for several seconds before the reboot
> > > > > actually starts.
> > > >
> > > >
> > > You may be seeing an old memory page from the login screen which is not
> > > wiped by the reboot code... And then after some time gets replaced by
> > > whatever is being drawn on it.
> > 
> > Actually not. I've seen this on other Linux systems. What is happening is the
> > shutdown process stops/kills *user* processes, which means that a logged in
> > user is logged out, that causes the xdm-ish process puts up a login screen (or
> > for a non-gui system, the *getty process reverts to a console login prompt).
> > This was generally more appearent in the olden days with slower systems (that
> > took longer to complete the shutdown process).  As the op says, the login
> > screen is quickly replaced with the shutdown/reboot process -- the xdm-ish
> > or *getty process gets killed, etc.
> > 
> > This is harmless. The *first* thing (or nearly the first thing) in the
> > shutdown process is to disable logins. So any short lived login screen or
> > prompt will be ineffective.
> > 
> But in my ase (OP here) the login **is** effective, I can actually log
> in again - ... and then it shuts down.
> 
> This is on a pretty fast system, a Fujitsu Esprimo Q957 (Intel I5
> processor) with a 2TB SSD. The other xubuntu 24.04 system where I
> don't see this symptom is probably a bit slower (but not much).

OK, than there is a bug somewhere in the shutdown process...

> 

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