Gnome, NetworkManager, and FireFox/IceWeasel 3 starting in Offline mode
19th July 2008
For some reason, my IW 3 is now starting in Offline mode each time, despite my attempts to remove that checkbox every time.
Update: as suggested by Donny Kurnia (based on the recent post by Hobgoblin), the simplest and the most correct way to fix the problem is to go to about:config and set toolkit.networkmanager.disable to true.
Below you will find other (worse and obsolete) solutions.
Little research had shown that the simplest solution is to disable FireFox’s/IceWeasel’s feature to auto-detect if Internet connection is available: go to about:config, find browser.offline-apps.notify and set it to false. After this, FireFox/IceWeasel 3 will no longer try to check if you have Internet connection. (this was wrong, and here is why: kb.mozillazine.org/Browser.offline-apps.notify)
However, this is not a good solution, because auto-detection generally improves user experience (e.g. by automatically using cached page versions for tabs open at startup). The actual reason (in many cases) is the network detection by the NetworkManager – it reports “no connection” although connection is present (bug report).
The simple solution is to disable (or even remove) NetworkManager.
Another simple solution (without disabling/removing NetworkManager) is to disallow NetworkManager to notify other desktop applications about the presence of the internet connection (slightly edited):
Open the terminal/konsole (Applications–>Accessories—>Terminal), and type gksudo gedit /etc/dbus-1/system.d/NetworkManager.conf (note: path might differ for your Linux distribution – try locate NetworkManager.conf). Then replace all lines
< allow send_interface="org.freedesktop.NetworkManager"/ >
with
< deny send_interface="org.freedesktop.NetworkManager"/ >Save the changes and either reboot or just stop/kill/restart the running instance of NetworkManager. This change will stop NetworkManager from notifying FireFox/IceWeasel and other desktop applications about the presence/absence of internet connection – and FireFox will no longer start in Offline mode.
(Thanks Nikitas350 from Ubuntu forums for this fix.)
Personally, I did what Nikitas350 suggested, and also removed the networkmanager-gnome package – I’m still able to add networkmanager-kde monitor to Gnome panel, if I want to (and for me, networkmanager-kde works properly).
The even better solution would be to make NetworkManager detect the availability of connection properly. However, I did not dig deep enough to find how to do that – comments and better solutions are welcome.
One of the more complicated solutions (and still not a perfect one) was also found at Ubuntu forums (slightly edited for contextual clarity):
I am using USB modem to connect to internet and the Offline mode issue was also bothering me after upgrading to Firefox 3.
The solution I have found was: disable Network Applet from System -> Preferences -> Sessions, and add the following lines to the file “/etc/network/interfaces”:
auto eth0
iface eth0 inet dhcp
Thus, I guess, Firefox believes that eth0 (i.e. ethernet card) is active, although Internet connection is established via ppp0 (i.e. USB modem).
August 20th, 2008 at 12:41
– comment text removed –
August 20th, 2008 at 12:54
Rick,
I had to remove the text of your comment, as it is offensive, and shows your inability to read all the text.
The simplest suggested solution was to disable this feature in FF3, other options are presented for convenience. The feature itself is normal, it’s just that not all software works good together from the start. If you don’t like it – don’t use, you still have the choice.
And please avoid using offensive words.
October 2nd, 2008 at 15:02
[...] I read that you can fix it by setting browser.offline-apps.notify to false [...]
October 9th, 2008 at 3:56
http://kb.mozillazine.org/Browser.offline-apps.notify describes the use of the browser.offline-apps.notify setting. It has nothing to do with NetworkManager and detecting offline status. Which probably explains why adjusting it did nothing to fix the offline mode startup I had
October 9th, 2008 at 12:35
Eggyknap, you are right – I didn’t bother checking the “forum knowledge” for exactness. This is now corrected.
Did you find some elegant/simple solution to the problem?
October 20th, 2008 at 18:03
[...] Gnome, NetworkManager, and FireFox/IceWeasel 3 starting in Offline mode ยป Autarchy of the Private C… Force firefox 3 to be online (tags: offline firefox) [...]
November 16th, 2008 at 3:17
Stop NetworkManager notifying all application is too overkill. The much appropiate way is to set toolkit.networkmanager.disable option to true. See http://kb.mozillazine.org/Toolkit.networkmanager.disable for the option’s explaination. I know this option from http://ubuntuforums.org/showthread.php?t=800179&page=4, post number 34.
November 16th, 2008 at 3:36
Donny,
thanks, I’ve just updated the post.
January 26th, 2009 at 20:48
[...] Gnome, NetworkManager, and FireFox/IceWeasel 3 starting in Offline [...]
May 3rd, 2009 at 10:08
Thank you very much for the /etc/dbus-1/system.d/NetworkManager.conf solution – the problem with the others is that they don’t also fix Pidgin (and any other potential apps) when I’m on dial-up/PAN/etc., while still letting me use NetworkManager for wifi connections.
May 5th, 2009 at 17:35
David,
I’m glad it helped.
May 15th, 2009 at 18:07
SHAZZAM! Searched all over for the answer to this little conundrum ever since I started using Firefox directly from the websiteinstead of with my distro. I find it easier to set up flashplayer, regardless of the distro. I wanted to write it up as a tip/turotrial, but I couldn’t do it without solving this annoying little problem. Thanksthanks!
May 24th, 2009 at 7:49
[...] Gnome, NetworkManager, and FireFox/IceWeasel 3 starting in Offline … Saved by tstiles on Fri 08-5-2009 [...]
July 1st, 2009 at 4:51
I’d love to find a solution for Windows. So far, the “obsolete” solution is the only one that works, since there’s no Network Manager in Windows. I suppose I should just switch to Linux, but I don’t feel like it.
July 1st, 2009 at 9:37
have you tried going to about:config and setting toolkit.networkmanager.disable to true?