Hi Carsten, Your detailed response sent be on a cleanup of all settings related to this.
On 17/05/18 16:08, Carsten Schoenert wrote: > Thunderbird itself is using the settings > 'network.protocol-handler.app.http(s)' for referencing the to be used > browser if one of http protocols is called. > > The default is set to 'x-www-browser' (see > /etc/thunderbird/pref/thunderbird.js) which is linked to another link > handled by update-alternates. Yes, /etc/thunderbird/pref/thunderbird.js contains the correct value. >> $ which x-www-browser >> /usr/bin/x-www-browser >> $ ls -la /usr/bin/x-www-browser >> lrwxrwxrwx 1 root root 31 Jun 19 2017 /usr/bin/x-www-browser -> >> /etc/alternatives/x-www-browser >> $ ls -la /etc/alternatives/x-www-browser >> lrwxrwxrwx 1 root root 16 Mär 30 18:47 /etc/alternatives/x-www-browser -> >> /usr/bin/firefox For me, this alternative is set to /usr/bin/epiphany-browser. > These settings shown above are the default case for a long time, so if > Thunderbird tries to open Thunderbird for html links you have some non > default settings. > > The settings for network.protocol-handler.app.http(s) can be modified > within your preferences so first have a look into your profile and check > if there is something changed. I can't find it in prefs.js in my profile. However, if I go to the Preferences window in Thunderbird, under Attachments/Incoming there are settings for http and https. These are currently set to 'Use firefox', but their defaults are 'Use Thunderbird'. There is also an entry for HTML Document, currently set to 'Always ask'. Its other options are 'Use Thunderbird (default)', and 'Use gvim'. No actual browser is listed there. > Another possibility to look at is the file > $HOME/.thunderbird/[your_profile]/mimeTypes.rdf > > Here also some different browser can be declared. Look for something > like this especially on 'NC:path': > >> 10 <RDF:Description RDF:about="urn:handler:local:/usr/bin/x-www-browser" >> 11 NC:prettyName="iceweasel" >> 12 NC:path="/usr/bin/x-www-browser" /> > > You can safely remove such a entry. > I'm guessing this is what is edited under Attachments/Incoming? I'm still surprised by the defaults presented. Oddly, for PNG Image, the default is Firefox. In addition to checking the above, I have also cleaned up the settings for my Gnome desktop environment. There were a lot of old .desktop files lying around, some indeed setting thunderbird or icedove as a potential browser. As a result, in Gnome's Settings application under Default Applications, the Web option finally no longer listed Thunderbird as an option, and had Firefox set as its value. All seemed well. However, this morning I noticed: $ xdg-settings get default-web-browser thunderbird.desktop I immediately checked Gnome's settings, and it still listed Firefox. Then just now, I ran: $ xdg-open https://www.matijs.net/ .. and it seems this tried to open Thunderbird, although I can only tell from the AppArmor messages appearing, since nothing is actually shown. In Gnome's settings, the Web entry now again shows Thunderbird. I'm not sure what's going on here or where xdg-settings gets its information. Regards, Matijs
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