bug#42374: 28.0.50; too many tramp messages after computer sleep

[Jean Louis]

* Michael Albinus <michael.albinus@gmx.de> [2020-07-16 10:34]:
> Jean Louis <bugs@gnu.support> writes:
> 
> Hi,
> 
> > I have opened tramp connection, then I put computer to sleep, after few
> > hours I open the notebook and then as it is not connected to Internet,
> > it starts with these messages. When message appears, I cannot really do
> > nothing, so I cannot do M-x, and whatever I press, it starts running
> > again something from Tramp and I need to press maybe hundred times C-g
> > to abort these messages, basically there is no abort, and Emacs becomes
> > not responsive, as whatever I do,, it gives me these messages.
> 
> Tramp is a library, and it isn't activated on its own. So let's see why
> it is called:
> 
> > Tramp: Opening connection for motorola using scp...
> > Tramp failed to connect.  If this happens repeatedly, try
> >     ‘M-x tramp-cleanup-this-connection’
> > Tramp failed to connect.  If this happens repeatedly, try
> >     ‘M-x tramp-cleanup-this-connection’
> > Tramp failed to connect.  If this happens repeatedly, try
> >     ‘M-x tramp-cleanup-this-connection’
> > Error running timer ‘desktop-auto-save’: (file-error "Tramp failed to 
> > connect.  If this happens repeatedly, try
> >     ‘M-x tramp-cleanup-this-connection’")
> > Error running timer ‘desktop-auto-save’: (file-error "Tramp failed to 
> > connect.  If this happens repeatedly, try
> >     ‘M-x tramp-cleanup-this-connection’")
> 
> Well, `desktop-auto-save' is in progress, and it calls Tramp functions
> again and again. You should suppress this when the remote connection
> isn't available.
> 
> What are your values of `desktop-buffers-not-to-save',
> `desktop-files-not-to-save' and `desktop-modes-not-to-save'?

desktop-buffers-not-to-save
"\\` "
 
desktop-files-not-to-save
"\\(\\`/[^/:]*:\\|(ftp)\\'\\)"

desktop-modes-not-to-save
(mu4e-compose-mode tags-table-mode)


Thank you,
Jean