Mozilla Firefox is a free and open source Gecko-based web browser. It is the current default for the Ubuntu desktop.

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1answer
15 views

Where is the flash whitelist and blacklist on Firefox?

In Tools--->Add-ons-->Plugins-->Shockwave Flash I selected Ask to activate. Now I need to explicitly allow flash to play on every website I visit. It is possible to Allow and Remember or ...
0
votes
1answer
54 views

Firefox 35.0 on Ubuntu 14.04 LTS sets a cookie to google.com even without calling any web location

I have updated my Ubuntu 14.04 recently and got a new firefox (version 35.0). I have configured an empty starting page and my default search engine is configured to duckduckgo. but: Since the update ...
-1
votes
0answers
19 views

How to fix website rendering issue?

This is one example. The text is not fully shown. Font spacing is messed up. I'm guessing it is an issue with Firefox's rendering engine. Screen size: 1366*768 no zoom on website firefox version ...
2
votes
1answer
15 views

How to set Chrome as default browser for Java installation

When going into the Java Control Panel by executing the following command in Terminal: ControlPanel And going to the Advanced tab, I see that at the bottom it says: But I have set my default ...
0
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0answers
15 views

How can I see a music sheet on Mozilla Firefox under Linux Ubuntu?

I would like to see a music sheet on the Internet. I saw it on Mozilla Firefox. The error message is the following: Your browser has been detected as: Firefox for Unknown Platform How could I ...
1
vote
1answer
576 views

Firefox fonts changed after install ttf-mscorefonts

My question is probably simple but I can't find a way to revert it to the previous state. After installing mscorecofonts (which was installed during pipelight installation) my fonts in Firefox went ...
1
vote
1answer
55 views

Why firefox page scrolling is slow on Ubuntu 14.04? [on hold]

Why on the firefox default installation (on 14.04) the page scrolling is so slow? With Chromium I haven't this problem. My hw: 4GB RAM and a nvidia video card (9600 GT). Thanks!
0
votes
1answer
10 views

How can I associate MAFF file format with firefox

I have been saving web pages in MAFF fromat but in ubuntu these files are associated with fileroller. How can I change this so that it always opens with firefox?
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0answers
20 views

Create a .desktop file: cannot find the icon on my desktop

I am trying to install Firefox Dev and followed this: How do I install the Firefox Developer Edition? I created, with nano, a file: firefox_dev.desktop in ...
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0answers
16 views

CGI written in C

I need advice how to run a CGI sample program written in C. When the CGI is accessed by local Firefox, a popup comes out saying You have chosen to open: cgi_test.cgi which is BIN file(8.4KB) from: ...
1
vote
2answers
59 views

Firefox fails to start on Ubuntu 14.04

I am unable to start Firefox. Whenever I click on the icon the mouse pointer just changed the state to indicate its busy and the after 2 seconds it would change back to a pointer. I ran the ...
1
vote
2answers
83 views

How to uninstall apps installed through Firefox Marketplace?

In Firefox 35, there is menu called "Apps" that allows to install "firefox apps" through Firefox Marketplace. I installed an app but now I can't find how to remove it! Is there an obvious way that I ...
14
votes
2answers
409 views

Removing `t=canonical` from browser searches

In Ubuntu 14.04, when I do a search in Firefox using either the address bar or the search bar, the system always adds t=canonical to my searches. So the full string becomes: ...
0
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0answers
17 views

how to launch gmail web app for unity

In 14.10, I clicked the button to install the gmail web application. How do I launch the application? There's no description available for version 14.10 which I could see -- yet there was a button ...
2
votes
2answers
50 views

Drop Down Firefox in ubuntu

Is there any way we can have Firefox the way we can have terminal with Tilda or Guake?
4
votes
2answers
3k views

How to downgrade Firefox from 30 to 28?

I've accidentally sudo apt-get upgrade (while c/p-ing instructions to do something and failing to notice that it isn't sudo apt-get update) and it upgraded Firefox from 28 to 30. Now my menus are ...
0
votes
1answer
21 views

How to make Firefox stop suggesting if I meant to go a website when I search

I search using the URL address bar in Firefox however when I search a phrase or whatever a popup always comes up asking " Did you mean to go to example? ". It's quite annoying and was wondering if it ...
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votes
0answers
31 views

Firefox font changed [on hold]

So, I installed a font (helvetica-ultra-compressed-1361520779.ttf) and suddenly my Firefox changed the font. What should I do? Should I remove the font? How? What is that font directory?
1
vote
2answers
966 views

Disable PDF.js and use Evince instead

Some PDFs render inside Firefox. I am very unhappy with that for several reasons. Since Ubuntu ships with a good, stable and lightweight PDF-viewer, evince, I'd rather have all PDFs handled by that ...
14
votes
5answers
3k views

How can I change Firefox's default dictionary?

It's aboot time I asked this one. Firefox thinks I'm Canadian. I've got absolutely nothing against Canadians and their spelling is a lot better than Americans' but I don't spell specialised with a z. ...
0
votes
1answer
423 views

torrent magnet link applications (ubuntu 14.0)

how do i set deluge as my default magnet link application I am completely lost. I've tried going into my Mozilla preferences but i cant find deluge when I am searching for the application please help. ...
0
votes
0answers
51 views

Updated Ubuntu 14.04 today

Updated Ubuntu 14.04 today using Firefox 35 watching YouTube videos,in normal screen they're okay,enlarge screen and all i get is audio,black screen anyone having same issue or know why this is ...
0
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0answers
19 views

Google gives wrong search results in firefox in Lubuntu 14.04.1

I was trying to find some info about an issue in Lubuntu (I cannot install MS Office 2010 with PlayonLinux), but the google search results were wrong, it highlighted words which were totally different ...
17
votes
2answers
87k views

How to install Java plugin for Firefox? [duplicate]

I am trying to install Java and plugins for firefox. I installed both jdk and jre. When I try with the sudo update-alternatives --config java command it shows only one choice available. Plugins are ...
0
votes
1answer
65 views

Ubuntu Chrome can't load official adobe flash player?

I'm currently using chrome 39.0.2171.99 (64-bit) on Ubuntu 14.04. But i have encoding and massy codes problem when flash contains Chinese words.(This only happens in chrome, firefox in my ubuntu works ...
0
votes
1answer
122 views

Lightspark doesn't works in firefox 29.0 and Chromium 34.0.1847.116 (ubuntu 14.04)

I need your help, I'm using Ubuntu 14.04 and I've installed Lightspark (lightspark 0.7.2-3ubuntu1) as an alternative to Adobe Flash Player. But Lightspark doesn't works both with Firefox 29.0 and ...
0
votes
2answers
150 views

Firefox keeps crashing on Ubuntu 14.04 [on hold]

Since yesterday, every time I visit Youtube Firefox crashes. Also, it crashes on some other video streaming sites (or pages that include a video player like jwplayer for example), but not every time. ...
0
votes
1answer
78 views

Flash works ugly

After updates last Friday (16.01.2015) I have started getting problems with all my browsers which use Adobe Flash player (Firefox, Midori etc). Videos from Youtube, Vimeo, etc. are playing "laggy" ...
3
votes
1answer
849 views

Can I use Chrome's Pepper Flash with Firefox?

As Adobe no longer supports Flash on Linux (see "NOTICE" below), is there a way to use Chrome's Pepper Flash plugin with Firefox? NOTICE! Flash no longer is supported for Linux EXCEPT as part of ...
1
vote
1answer
25 views

What are the compilation steps for Firefox 33? [closed]

Where does browser.xul file stored during unzip of omni.ja by Firefox 33 ? What are the compilation steps for Firefox 33 under Ubuntu ?
0
votes
0answers
21 views

Use 32 Bit java plugin in 64 bit firefox

I am unable to run a self signed applet in firefox that had 64 bit java installed. I understood that it may be the case with my java being 64 bit as the same was working in windows environment which ...
0
votes
1answer
64 views

System freezes when browsing and opening email client

Issue: The system freezes frequently, and to the point where there is nothing to do but hit the restart button on the case. This happens in particular when using the browser (Firefox) and almost ...
3
votes
3answers
10k views

Tor browser not opening

Whenever I start Tor in Ubuntu 13.04, the Vidalia Control Panel opens, loads up and displays a status of "Connected to the Tor network!". However, the tor-infused firefox, does not pop up like it ...
0
votes
1answer
134 views

Firefox pdf-viewer don't work

After Firefox update from 34 to 35 via apt-get upgate; apt-get upgrade I can't open pdf's in Firefox. Download and read with evince works fine. How can i fix it? OS: Ubuntu 12.04 Firefox ...
2
votes
0answers
237 views

Firefox keeps freezing after upgrade to v35 on Ubuntu 14.10

After upgrading to Firefox 35 on Ubuntu 14.10, I keep experiencing browser freezing every time when I open a new tab, especially when I type in the address bar. The memory usage surges dramatically ...
1
vote
2answers
134 views

How to force Firefox to open downloads with new default file manager (Nemo)?

I installed Ubuntu 14.04. Then I installed Nemo and configured it to be my new default file manager. Most things works great, except for the browser Firefox. If I download a file and click in ...
0
votes
0answers
39 views

Firefox won't start, 'sys_page_size == 0' error

Out of the blue, Firefox Developer Edition from the PPA on Ubuntu 12.04 wouldn't start. It did not launch by searching through Unity and clicking on Firefox. Typing firefox in terminal gave me the ...
0
votes
0answers
47 views

Pipelight-multi displaying plugin-needed in firefox 35

I have just reinstalled pipelight-plugin as it is not working at all and I am still getting the same problem. Firefox on youtube is reverting to the html5 plugin, but the youtube videos on facebook ...
0
votes
3answers
148 views

Chromium + Firefox - flash doesn't function w/Pepper.

Environment: toshiba chromebook with crouton ubuntu 12.04 Problem: Flash doesn't function on Chromium. Flash doesn't function on Firefox. Sound muted in Ubnutu Desktop. I'm going to order the ...
0
votes
2answers
8k views

Flash don't work Lubuntu 14.04

I had installed Lubuntu 14.04 and Flash don't work when I open with firefox a video of youtube or spotify web client or yes.fm I can see that the addon is ok: shockwave flash version 11.2.202.350 ...
0
votes
2answers
268 views

YouTube annotations not working on Firefox 33.0 (Kubuntu 14.10)

After updating my Kubuntu to 14.10, I can not see the video annotations on YouTube videos. I tried to turn off Flash Player, but the annotations does not work neither in the HTML5 player. Any ideas? ...
52
votes
7answers
18k views

How do I install the Firefox Developer Edition?

Mozilla released the Firefox Developer Edition! How do I install it on Ubuntu? Source: Mozilla Releases 'Firefox Developer Edition' for Windows, Mac and Linux - OMG! Ubuntu!
2
votes
2answers
6k views

can't watch flash content in lubuntu

i can't watch flash content in firefox. can someone please help me? I am sorry if this has already been addressed, but i have visited numerous forum posts and tried several different things. My ...
0
votes
2answers
33 views

How to make CTRL+F4 to close the current tab in Firefox?

On Ubuntu Studio 14.10, the CTRL+F4 seems to work as a shortcut for opening the 4th desktop (tested using a live DVD, without any customizations). However, I only need two desktops, so I reduced the ...
0
votes
2answers
21k views

Where do browsers keep temporary files?

How do I get in to my Temp Internet files? In running Ubuntu 11.10 on an HP Laptop I normally use Chromium but still have Fire Fox installed
0
votes
1answer
29 views

Delete all site data in firefox [closed]

I have 2 google accounts and firefox on startup always logs into the wrong one which really pisses me off. How can I make it log into the first one or forget all data regarding websites to start over? ...
1
vote
1answer
111 views

Why all my firefox downloads are opened by vlc?

It has been more than one week and Firefox has become opening any downloaded file with vlc even if I change the source of opening the file. In the next download, it will open again with vlc. What ...
0
votes
2answers
38 views

Too slow to select application to open a download file in Firefox [duplicate]

For unknown reason, some of downloaded pdf files in Firefox are opened by default by gedit, and some are by default by evince. For those which will be opened by default by gedit, I want to select the ...
2
votes
0answers
39 views

unable to install webapps from firefox in 14.10

I've upgraded to 14.10 and I'm not able to install webapps from Firefox. For example, when I'm on Twitter I've the popup asking me if I want to install it but if I select "install" it does nothing. ...
0
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0answers
45 views