Lernid

click on URL in 'about' box, tries to load URL but fails; use xdg to launch external browser?

Bug #549245 reported by Kevin Mark
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Lernid
Incomplete
Undecided
Unassigned

Bug Description

 /usr/bin/lernid:317: GtkWarning: Unable to show 'http://wiki.ubuntu.com/Lernid': Failed to execute child process "/opt/firefox/firefox" (No such file or directory)
  response = about.run()
------------------------------------------
in version 0.6, on line 317, I tried to click on the URL in the 'about box'. the code 'respose = about.run()' seems not to be a python error but gtk+. It tried to run '/opt/firefox/firefox' with the URL and since this binary or a link to it doesn't exists, the line fails but does not crash the program. I grep'd in /etc and /lib and found no refernce to /opt/firefox/firefox. (grep -R -i firefox ...). the dependency 'python-gtk' seems to be the starting point but its dependencies are where the answer will be.(apt-cache depends python-gtk). if I create a simlink from /usr/bin/firefox to /opt/firefox/firefox, that is a work-a-round.

Revision history for this message
Michael Budde (mbudde) wrote :

Do you have '/opt/firefox/firefox' in the web browser command field in System → Preferences → Preferred Applications?

Revision history for this message
Kevin Mark (kmark) wrote :

my system had ubuntu, then went to kubuntu then week ago removed most of kde and installed lxde. (as far as I know) I dont have that menu choice on my system. I did find a similar bug (https://bugs.launchpad.net/ubuntuone-client/+bug/401764). There may be more. I tracked down the odd program invocation to gtk_show_uri() which is the default when gtk_about_dialog_set_uri_hook() is not set. gtk_show_uri() somehow checks for certain values that I think are in $HOME and might be set elsewhere like in /etc. They are set in
/home/$USER/.gconf/desktop/gnome/url-handlers/{chrome|ftp|mailto|http|https}/%gconf.xml

the contents of ~/.gconf/desktop/gnome/url-handlers/http/%gconf.xml is:
----------------------------------------------------------------------------------
<?xml version="1.0"?>
<gconf>
        <entry name="needs_terminal" mtime="1199915418" type="bool" value="false">
        </entry>
        <entry name="enabled" mtime="1199915418" type="bool" value="true">
        </entry>
        <entry name="command" mtime="1199915418" type="string">
                <stringvalue>/opt/firefox/firefox &quot;%s&quot;</stringvalue>
        </entry>
</gconf>
----------------------------------------------------------------------------------
so since I did not know about setting these values, the gtk libs used this value and since it was set to an odd value, the command failed. I think it may be that the program assume your system has certain dependencies like the gnome-based ubuntu system and that you can use some gui method to set that values you suggest. On a non-gnome-based system, these would seem to fail. maybe it needs a neutral way to open a uri like 'xdg' stuff as a fallback?
this was the email I found as the major clue:
http://<email address hidden>/msg09940.html

Revision history for this message
Mohammad AbuShady (coalwater) wrote :

I'm not sure but u think that this bug is a bad gconf setting, it's not related to lernid, if you fix your gconf and set ur http url handler correctly, every thing should be back to normal
I don't understand though why firefox was in /opt, i thought it's supposed to be in /usr

John S. Gruber (jsjgruber)
Changed in lernid:
status: New → Incomplete
John S. Gruber (jsjgruber)
summary: - click on URL in 'about' box, tries to load URL but fails
+ click on URL in 'about' box, tries to load URL but fails; use xdg to
+ launch external browser?
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