Chris Burgess's questions

Does Gnome3 have a method to filter desktop notifications based on notification content? If so, how?

Desktop notifications are useful, and I know that it's possible to turn them off per-application.

What I'd like to be able to do is filter notifications based on the notification text (or other notification metadata, something like this rsyslog question). I have one application which generally sends useful notifications, and also (in a particular environment) sends a notification each couple of minutes which I'd rather not see.

The notification is a harmless warning but annoying, so filtering the notification would be a reasonable solution if the desktop environment supports this.

Similar requests:

• Filtering DBUS/notify-send messages
• Turn off "Dropbox almost full" notification

In Xenial 16.04, I was able to use Network Manager to configure a VPN to autostart per network connection.

In Bionic 18.04, I can't yet find this option.

Is it available via some configuration or additional package?

See also: https://askubuntu.com/a/1033606/11052 and Automatically turn on VPN on computer unlock Ubuntu 18.04

My work calendar is available at https://username:[email protected]/caldav.php/username/calendar (example, but results are same with valid creds).

The new Calendar in Bionic looks great, and syncs well with other services, so I'd like to have my work calendar integrated to the view at top of screen in default Gnome 3.28.1

If I try to add it:

• In Gnome Calendar, I select "Calendars"
• I click "Add" > "From Web ..."
• I enter the valid calendar URL and creds (eg https://username:[email protected]/caldav.php/username/calendar)
• A progress bar shows briefly behind the URL text entry field
• The "Add" button remains greyed out / without text

How else can I add my CalDav work calendar to my desktop environment?

I can access the calendar using curl with the same URL or curl --user username:password (ie Basic Auth).

• Gnome Bug 720519 - Add separate components for CalDAV and CardDAV accounts
• Debian Bug 866794 - gnome-calendar: No CalDAV support?
• Caldav _kind of_ available for Calendar? (17.10)
• CalDAV client for Ubuntu (16.04, answer involves substantial indirection setting up OwnCloud with dummy email etc)

I move my laptop (ThinkPad T570, Ubuntu Xenial, Unity/Compiz) between different work environments, and I find that using Unity Control Center "Display" applet doesn't reliably (ever?!) retain the arrangements I specify.

To work around this, I've written a bash/xrandr script which arranges things as I want them. (Available here as a gist, but the details aren't really essential to my question so not including in full). If the screens don't appear correctly then I execute this script to arrange them.

What I'd like to do is have this script trigger on monitor connection. Unity/Compiz do this for the settings stored in Display prefs, so I'd like to know the correct way to take my preferred settings as expressed in bash/xrandr, and have that be delivered by Ubuntu as part of the "native" experience.

UPDATE: I found ~/.config/monitors.xml which seems to be where Unity stores the settings. Here's mine, with new revisions as I swap locations.

I've thought about triggering the rearrangement via /etc/udev/rules.d, but that would require permitting scripts run by root to talk to my WM, which presumably means opening xhost permissions. Since the default OS seems to arrange displays without that (just not to an arrangement I want), I'd prefer to find as "native" a solution as possible.