snap question

[Keith]

On 11/19/22 11:50 AM, Jay Ridgley wrote:
> Good morning,
> 
> There have been several times that a pop-up message has announced that a
> snap update is pending for Netscape.
> 
> When I have done a refresh I am informed that all snaps are up to date.
> can any one enlighten me, as to why this happens?
> 
> jay at polar:~$ sudo snap refresh
> [sudo] password for jay: xxxxxxx
> All snaps up to date.
> jay at polar:~$
> 
> Description:	Ubuntu 22.04.1 LTS
> Release:	22.04
> Codename:	jammy
> 

Wild-ass-guess ahead


I assume its because whatever clients (like the Ubuntu Software store) 
of the snapd system daemon don't immediately get notified of a change to 
an updated snap's refresh status. Either snapd doesn't immediately push 
notification when a change is initiated from the command-line interface 
(snap command), or the client only polls snapd periodically for changes. 
If a refresh occurs between polling intervals of a client, then the 
client assumes that there is still a refresh update pending. Only until 
it gets an update from the snapd daemon will it change it's reporting of 
the updated snap's status from pending to completed. It gets that update 
from polling or through an user-initiated forced update of the refresh 
list (the recycle button appearing in the left-hand corner of the 
Updates page in Ubuntu software).

The status of refreshes made through Ubuntu Software (client) seem to be 
immediately updated, though. For example, before I disabled pop-ups 
notification for snapd-user-session-agent if I received a pending update 
notification banner pop-up for firefox, I would close Firefox, open 
Ubuntu Software, click on the Updates tab, and then click Update for 
Firefox, wait for the snap refresh to complete, and then re-open 
Firefox. After that, I didn't get any more pop-ups. Dropping to the 
command-line and issuing "snap refresh --list" would show the all snaps 
up to date message. At least that's been my experience, YMMV.

-- 
Keith